LGPM0201

THE LEGEND PLUS MULTI-PRESET MODEL LGPM INSTRUCTION MANUAL LGPM Cover.indd 1 7/11/2011 2:33:18 PM INTRODUCTION The Legend Plus Multi-Preset Unit (LGPM) is another unit in our multipurpose series of industrial control products that are field-programmable for solving various applications. This series of products is built around the concept that the end user has the capability to program different indication and control requirements. The Legend Plus, which you have purchased, has the same high quality workmanship and advanced technological capabilities that have made Red Lion Controls the leader in today’s industrial market. Red Lion Controls has a complete line of industrial indication and control equipment, and we look forward to servicing you now and in the future. CAUTION: Risk of Danger. Read complete instructions prior to installation and operation of the unit. LGPM Cover.indd 2 CAUTION: Risk of electric shock. 7/11/2011 2:33:21 PM Table of Contents GENERAL DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5 Block Diagram · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5 Safety Summary · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6 Basic Operation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 7 Messages · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8 User Input Message Request Operation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8 Binary Message Request Operation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8 Output Message Request· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8 Message Cancellation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8 Overflow Indication · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 9 Peak & Valley · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 9 Normal Operating Mode · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 9 Keypad Description · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 10 Keypad Functions · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 10 Program Code Number (PRO.CODE) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 11 Front Panel Accessible Functions With Program Disable · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 11 PROGRAMMING GENERAL DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 12 Program Presets & Counter Load Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 13 Preset Values · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 13 Counter Load Value · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 13 Program Scale Factors Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 14 Count Scale Factor · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 14 Rate Scale Factor · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 14 PROGRAMMING MENUS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 15 Program Scaling Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16 Count Scale Factor (COUNT SF) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16 Rate Scale Factor (RATE SF) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16 Count Scale Multiplier (CNT.SCM) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16 Rate Scale Multiplier (RATE SCM) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16 Rate Conversion Factor (RATE PER) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16 Decimal Point (CNT. DP, RATE DP) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 17 Change Count Value With Scale Factor (CHG CNT W/SF) · · · · · · · · · · · · · · · · · · · · · · · · · · 17 -1- Program Rate Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Minimum And Maximum Update Time · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Counter Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Count Modes (CNT.INPUT) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Counter Reset Action · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Counter Automatic Reset (AUTO RST)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program User Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Binary Message Request (BIN MSG REQ) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · No Mode · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Maintained Reset (MNT RST) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Momentary Reset (MOM RST) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Reset Output (RST OUT) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Set Output (SET OUT) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · View/Freeze Display (VIEW DS1)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Change Display (CHG DSP)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Request Message (REQ MSG#)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Clear Message (CLR MSG) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Skip Preset (SKIP PRS) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Counter Load (CNT LD) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Print Request (PRINT RQ) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Disable (PGM.DIS.) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Inhibit Count · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Outputs Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Phase · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Output Modes - Timed, Latched, Boundary Or HI/LO Acting · · · · · · · · · · · · · · · · · · · · · · · · · · Rate Output On/Off Delay · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Output End (Reset) Modes - OUT1 END, OUT2 END · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Output Power Up State (OFF@P.UP, SAVE@P.DN OR ON@P.UP)· · · · · · · · · · · · · · · · · · · Reset Output With Count (RST/C-EN OR DS) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Request Message (REQMSG#—) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Display Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Displays 1 To 4 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Scroll Speed (SCRO.SPD) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Display Intensity (DSP.LEVEL)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · -2- 18 18 19 19 20 20 21 22 22 22 22 22 22 23 23 23 23 23 23 23 23 23 24 24 24 24 26 26 26 26 27 27 27 27 Custom Display Lines (CUST.DSP.1 / CUST.DSP.2) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Mnemonic · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Message Module· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Message Type · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Message Text · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ASCII Table Of Extended Characters · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ASCII Table Of Standard Characters · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Message Priority (PRIOR - 1)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Blinking Message (BLNK-YES/NO) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Multiplex (MUX - YES/NO) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Maintained/Momentary Message Request · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Message Cancellation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Message Time · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Message Color · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Communication Port Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Baud Rate · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Parity/ Number Of Data Bits · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Unit Address · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Serial Transmit Delay· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Print Options Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Mnemonics (MNEM-Yes/No) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Transmit And Reset (TX&R-Yes/No) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Transmit Message #0 (MSG0-Yes/No) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Options Module· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Operator Access · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Preset Tracking · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Program Code (PRO.CODE) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · User/Factory Settings · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · LGPM Factory Settings Chart· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · LGPM User Settings Programming Sheet · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · SERIAL COMMUNICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Programming Software · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Installing Software · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Using Software · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · -3- 27 27 29 29 30 31 32 33 33 33 33 33 33 33 34 34 34 34 34 35 35 35 35 36 36 36 36 37 37 39 42 42 42 42 Communication Format · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 43 Sending Commands And Data· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 43 Receiving Data · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 46 ® Terminal Emulation Program For IBM PC · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 47 Serial Connections · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 48 Terminal Descriptions · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 48 Connecting To A Host Terminal · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 49 Troubleshooting Serial Communications · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 50 INSTALLATION & CONNECTIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 51 EMC Compliance Installation· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 52 Additional EMC Installation Guidelines · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 52 Wiring Connections · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 53 User Input Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 53 A.C. Power Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 53 DC Power Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 53 Serial Communications · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 53 Signal Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 54 Inputs A & B · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 54 DIP Switch Set-Up · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 55 Various Sensor Output Connections · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 56 SPECIFICATIONS & DIMENSIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 57 TROUBLESHOOTING GUIDE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 60 APPENDIX “A” - SCALING FOR COUNT INDICATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 63 Scaling For Count Indication · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 63 Count Scale Multiplier · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 64 APPENDIX “B” - SCALING FOR RATE INDICATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 66 Rate Scale Multiplier · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 67 APPENDIX “C” - APPLICATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 69 APPENDIX “D” - ORDERING INFORMATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 72 APPENDIX “E” - FLOWCHART FOLD-OUT· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · (Insert) -4- GENERAL DESCRIPTION BLOCK DIAGRAM The Legend Plus Multi-Preset Counter (LGPM) is a multi-input, counting panel instrument that offers the f eatures and p erf o rmance of a multi-level preset counter and time interval rate indicator. The LGPM f eatures six p resets, which can be assigned to either the rate or count indicator. The Legend Plus h as advanced features that allow the unit to be more closely coupled to the application. The unit features a 2 line by 8 character alphanumeric display, allowing the value mnemonics and programming menus to be easily read. The unit is available in single or dual color display models. The four scro ll-through indication displays can be programmed to show various parameters and to automatically scroll. On dual color models, each indication display can be programmed f or either color. Th e mnemonics corresponding to the main display v alues (RATE, PEAK, VALLEY, COUNT), can be individually programmed and modified as desired. For example, the RATE mnemonic can be reprogrammed to display the word SPEED, so that when the rate mnemonic is to be displayed, the mnemonic SPEED is displayed instead. Two custom display lines allow the user to specify the number of digits of a value to be displayed on a line, along with any alphanumeric prefix or suffix. -5- GENERAL DESCRIPTION (Cont’d) Input A accepts a signal for the Count and Rate displays. Input B accepts a signal for the Count display or direction control. In the Anti-coincidence mode, both inputs are monitored simultaneously, so that no counts are missed, and the final count can be chosen as the sum or difference of the two inputs. Rate and Count displays have separate scaling and decimal point placement, for readouts in different units. The Counter Load feature enables the operator to modify the count value. This is useful when flawed material has been counted and it is necessary to adjust the count value accordingly. The rate operates in the time interval method (1/tau) to calculate the rate value. This method insures high resolution at all input rates. Averaging can be accomplished by programming the Minimum and Maximum Update Time for the desired response. Extensive scaling capabilities allow practically any reading at very slow input rates. The construction of the LGPM unit is a lightweight, high impact plastic case with a clear viewing window. The sealed front panel with the silicone rubber keypad meets NEMA 4X/IP65 specifications for wash-down and/or dusty environments, when properly installed. Plug-in style terminal blocks simplify installation and wiring changes. This capability allows displays such as; ‘1000 RPM’, ‘99999 Ft’, ‘PRC 9999’, etc. The Legend Plus also features messaging capabilities that can inform the user of output actions or other events that occur in a system. Up to ten messages can be programmed. Messages can be requested by an output status change, User Input(s), or through serial communications. The messages can be programmed for block or character scroll, to blink, time out, and to alternately flash between message and indication display. On dual color models the message can be programmed to be displayed in either color. This capability is very useful in drawing the operator’s attention to particular messages. The program disable DIP switch, a code value, and an external User Input selected for Program Disable can be utilized to provide multi-level protection against unwanted changes to data values and unit configuration. The Legend Plus features enhanced serial communications. The Serial port can be configured for connection to RS485 or RS232 devices. It can be used for data retrieval and for programming various data values. Optional Legend Plus Programming software (SFLGP) for IBM ® compatible PCs is available to program all the Legend Configuration parameters, such as, messages, count modes, etc. The software allows unit configurations to be created, uploaded, down-loaded, and saved to a file for rapid programming of the Legend unit. The six Programmable User Inputs can be configured to provide a variety of functions. Four User Inputs are located on the upper rear terminal block. The other two inputs are front panel function keys. The User Inputs can be configured to provide functions such as: Count Inhibit Message Request Message Cancellation View/Freeze Display Change Display Program Disable SAFETY SUMMARY All safety related regulations, local codes and instructions that appear in the manual or on equipment must be observed to ensure personal safety and to prevent damage to either the instrument or equipment connected to it. If equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. Do not use this unit to directly command motors, valves, or other actuators not equipped with safeguards. To do so, can be potentially harmful to persons or equipment in the event of a fault to the unit. Reset Counter Load Output Activation Output Deactivation Skip Presets (outputs) Print Request The LGPM offers a choice of seven programmable counting modes for use in applications requiring bidirectional, Anti-coincidence, and Quadrature counting. The count inhibit function can be utilized with all of these input response modes by programming User Input 4 for the Inhibit Count function. -6- BASIC OPERATION The signal at Input A is used for the Rate indicator. The rate indicator uses a time interval method (1/tau) to calculate the rate value. The unit counts on the negative edge of the input pulses. After the programmed minimum update time elapses and the next negative edge occurs, the unit saves the number of edges that occurred during the elapsed time. The number of edges is multiplied by the Rate Scale Factor, Rate Scale Multiplier, and the Rate Conversion Factor to calculate the rate value. Averaging can be accomplished by programming the Rate Minimum Update Time for the desired response. Extensive scaling capabilities allow practically any desired reading at very slow count rates. The unit contains a counter that keeps track of the input pulse count. The unit takes the actual number of pulses counted (internal count value) and multiplies them by the Count Scale Factor and Count Scale Multiplier. This results in the desired reading value for the Count display. The Counter has three Reset Action modes associated with the display; Reset to Zero (up-count modes), Reset to Preset (down-count modes), or Reset to the Counter Load value. A Reset can be a manual reset, using a programmable User Input, or it can be one of the seven programmable Automatic Reset modes. Both the reset action and automatic reset modes are programmed in the Program Counter Module. The Counter displays the scaled number of pulses that have been entered. When the count equals a Preset, the appropriate output will activate. The count can be programmed to automatically reset. During operation of the Legend Plus, after internal scaling is complete, any digits remaining to the right of the least significant digit (LSD) of the display is examined by the unit. If this digit is equal to or greater than 0.5, the LSD of the display is rounded to the next higher digit. Any number less than 0.5 is ignored. During Reset to Preset modes of operation, any remainder greater than 0.5 will cause the display to be rounded up. Due to this rounding action, the output activation may appear to be delayed. In actuality the display may have rounded up or down, but the internal count had not yet reached the preset value or zero. The following is a Block Diagram overview of the basic operation. -7- several bits need to be changed. This would be noticeable on the display, if a user were to utilize a thumbwheel switch to change messages. MESSAGES The Legend Plus features messaging capabilities that can inform the user of output actions or other events that occur in a system. Up to ten messages can be programmed. Messages can be requested by an output status change, User Input(s), or through serial communications. When a message is requested, the unit checks if there is a message already on the display. If there are no messages on the display, the requested message is displayed. A message on the display is replaced if, the requested message has the same or higher priority. If the unit is not at the main display, the unit stores one message request. If subsequent messages are requested while not at the main display, the unit stores the last message requested, or the highest priority message request. The stored message is redisplayed 2.5 seconds after the user returns to the main display. If a message is displayed and the user presses the appropriate key to get to the Preset, Scaling or Programming menu display, the displayed message is temporarily suspended. While the message is suspended the message timer, if used, is also halted. The message is redisplayed 2.5 seconds after the user returns to the main displays and the message timer resumes. If the Up or Down arrow key is pressed while in the main display loop, the message is also suspended, and the appropriate programmed display is shown. The message is redisplayed 2.5 seconds after the last key press. OUTPUT MESSAGE REQUEST Each output can be individually programmed to request a specific message when activated. The appropriate message will be requested regardless of the method used to activate the output, i.e. User Input, Count/preset processing, serial command, etc. Note: The Output must be active for a minimum of 50 msec. for the request to be seen. MESSAGE CANCELLATION Messages can be cancelled automatically, or manually. When cancelled, messages programmed for maintained request, will be re-requested if the display is available and the request source is still active. A request for a message of the same or higher priority will cancel the current message on the display. Messages can also be cancelled by a User Input programmed for Cancel Message or via the serial port. The three programmable cancellation options are Latched, Timed, and Til End. (See Program User Message Cancellation for details). USER INPUT MESSAGE REQUEST OPERATION Individual User Inputs can be programmed to activate any of the ten messages. The messages can be maintained or momentary. Messages can be assigned a priority from 1 to 8 (1 is highest). This assures that very important messages are displayed first. BINARY MESSAGE REQUEST OPERATION Two, three or all four of the User Inputs can be configured to request messages in a binary fashion. Messages 1 through 9 can be requested in this manner. The binary state 0 (all binary inputs inactive) , is used to indicate no message requested. During the scanning of the binary message request inputs, if the Input state is the same as the last requested binary message no change will occur. When an input change occurs, the unit requests the message number corresponding to the state of the inputs. The inputs must be stable for 100 msec (debounce time) for the message to be requested (See Program User Module for more details). Changing the individual binary message request input lines slowly will cause unwanted message requests, if -8- OVERFLOW INDICATION NORMAL OPERATING MODE The unit flashes the word “OVERFLOW” (or assigned mnemonic) in the appropriate display when an overflow condition occurs. An overflow occurs if the capacity of the display (6-digits) is exceeded or if the internal count capacity (9-digits) is exceeded. The use of an extremely small Scale Multiplier and Scale Factor value can cause the internal count capacity to overflow before the displayed value overflows. For example, if a Scale Factor of 0.0001 and a Scale Multiplier of 0.001 is used, for every 10,000,000 count edges received, the display increments by 1. Before the display reaches 215, the internal counter overflows. When the capacity of the display is exceeded, the count value is maintained and is valid. If the internal count capacity is exceeded, the count value is no longer valid. Use of a Scale Factor larger than “1” can cause the count display to overflow before 999,999 internal counts are accumulated. The use of a Rate Scale Factor, Scale Multiplier, and Rate Conversion Factor larger than “1” can cause the rate display to be in an overflow condition. The counters should not be allowed to operate in an overflow condition. As soon as, or before the counters overflow, the information should be recorded and the counters reset. In the normal operating mode, the up, down, left, and right arrow keys are used to scroll through the main display loop. In the main display loop, the four indication displays, scale factors, and program mode modules are viewed, as shown below. In the indication display loop, the up and down arrow keys are used to scroll to each display. The indication displays are referenced as 1 (0 CNT/0 CPS), 2 (PEAK), 3 (VALLEY), and 4 (COUNT), which are the factory default settings. The indication displays can be programmed to show other parameters and automatically scroll (See Program Displays Module). The last indication display that was viewed at power down, is the one viewed on power up. The Presets and Counter Load values are accessed from any of the indication displays or from the programming loop. The Count and Rate scale factors are accessed from the Scale Factors display or when in the programming loop from the Program Scaling module. In the Program Mode display, the operator enters the programming loop to access all parameters to configure the unit. Shown below is the Main Display Loop. PEAK & VALLEY The Peak and Valley registers record the lowest (Valley) and the highest (Peak) readings of the rate input signal. These values are viewed in the indication display loop and are updated automatically. A User Input can be programmed to reset the values to the current rate value individually or by sending the proper command via the serial communication port. The Peak and Valley values are NOT retained when power to the unit is removed. -9- KEYPAD FUNCTIONS (Cont’d) - The Up arrow key scrolls through the indication displays. In the programming loop, this key can be used to scroll through the main menus. When programming a numerical value, it increments (decrements, i.e., goes more positive, for negative values) at the selected digit position. If the key is pushed and held, the value will scroll (count up) automatically. After 5 counts, the unit enters fast scroll mode. If the key remains pushed, a digit shift occurs every one hundred counts until the maximum value or zero (for negative presets) is reached. When the digit shift occurs, the previously scrolling digit goes to zero. When zero is reached (for negative values), the display holds at zero. To go positive, the key must be released and pushed again. - The Down arrow key scrolls through the indication displays. In the v programming loop, it scrolls through the main menus and sub menus. When programming a numerical value, it decrements (increments or goes more negative, for negative values) at the selected digit position. If the key is pushed and held, the value will auto scroll (count down automatically). After 5 counts, the unit enters fast scroll mode. If the key remains pushed, a digit shift occurs every one hundred counts until zero is reached. When the digit shift occurs, the previously scrolling digit goes to zero. When zero is reached, the display holds at zero. To go negative, the key must be released and pushed again. ENT - The Enter key enters the programming loop, when “Program Mode” is displayed from the main display loop. When “Scale Factors” is displayed, pressing Enter allows access to the scale factors. This key is also used to save changes to data values. If the data value is a preset or counter load value, the value is entered and the preset menu is exited. For all other numeric data values (i.e., Output time, Rate update times, etc.), the value is entered and the value edit mode is exited. The value is still viewed in the display, but with no digits flashing. SEL> - The Select/Right arrow key scrolls right in the main display loop. When programming a numerical value, it selects the digit to the right. In a sub-menu loop, it is used to go to the next lower level and eventually into an edit menu. KEYPAD DESCRIPTION The keypad has a key array of two rows by four columns. Some keys have a dual function. For a description of key functions during text and mnemonics editing, see Text Editing in the Program Message Module. The following is a description of each key and its function during programming and normal operation: ^ KEYPAD FUNCTIONS - Function key F1 is a User Programmable Input. When the key is pressed, the unit performs the appropriate function as programmed in the “Program User Module”. F2 - Function key F2/RST is a User Programmable Input. When the key is pressed, the unit performs the appropriate function, as programmed RST in the “Program User Module”. The “RST” printing on this key is used as a quick reference for the operator if the function key is selected for a reset function. PRS - The PRS key accesses the Preset and Counter Load Module provided these values are not programmed for ‘loc’k. If all values are ‘loc’ked, pressing the PRS key does nothing. Preset values that are accessible (changeable), can be changed immediately. Pressing the SEL> key is no longer necessary to edit preset values. Within the preset menu, pressing this key saves the value and advances the display to the next available preset. Pressing the PRS key at the end of the module exits the module and returns the user to the main display loop. “”THEN GOTO 1000:REM “CHECK FOR KEYBOARD INPUT” 50 IF LOC(1) = 0 THEN 40 ELSE 80: REM “CHECK FOR INPUT” 60 IF LOC(1) = 0 THEN 80: REM “SKIP CLEARING OF BUFFER” 70 B$ = INPUT$(LOC(1), #1): REM “CLEAR BUFFER” 80 F = INP(MCR) AND 253: OUT MCR, F: REM “SET FOR RECEIVE MODE” 90 IF INP(LSR) < > TXEMPTY THEN 90: REM “WAIT UNTIL DONE TRANSMITTING” 100 TIMER ON 110 IF LOC(1) = 0 THEN 110 120 B$ = INPUT$(1, #1) 130 IF B$ = CHR$(10) THEN 160: REM “TO PREVENT DOUBLE SPACING ON PRINT” 140 PRINT B$; 160 IF NOT B$ = “” THEN GOTO 90 170 TIMER OFF 200 GOTO 40 300 TIMER OFF: RETURN 40 1000 D = INP(MCR) OR 2: OUT MCR, D; REM “SET FOR TRANSMIT MODE” 1010 PRINT #1, A$; : PRINT A$; : REM “PRINT KEYSTROKE” 1020 IF A$ = “*” THEN PRINT 1030 IF A$ = “*” THEN IF INP(LSR) < > TXEMPTY THEN 1030 ELSE GOTO 60 1040 A$ = INKEY$: IF A$ < > “” THEN GOTO 1000 1050 GOTO 1010 -47- For connection to an GCM232 Converter Module, refer to diagram below. SERIAL CONNECTIONS When wiring, remove the 10-position terminal block, which is on the top board at the rear of the unit. Refer to the top label and configure the RS485/RS232 jumpers for the desired interface. Then, refer to the numbers listed on the label with the terminal description for installing each wire in its proper location. For RS485 the data (transceiver) wires connect to the A (+)/TXD and B (-)/RXD terminals. It is recommended that shielded (screened) cable be used for serial communications. This unit meets the EMC specifications using Alpha #2404 cable or equivalent. There are higher grades of shielded cable, such as, four conductor twisted pair, that offer an even higher degree of noise immunity. In some applications, a signal ground may be required to establish a ground reference. The signal ground is required if the equipment does not have internal bias resistors connected to the transceiver lines. The signal ground is connected from only one Legend Plus to the equipment. If necessary, the shield can be used as the signal ground. For connection to an RS232 port on a computer, refer to diagrams below. TERMINAL DESCRIPTIONS COMM. - Common required for some applications. A (+)/TXD & B (-)/RXD - The Legend Plus transmits and receives on these two terminals which are connected to the external device. TX EN. - Used primarily with a Red Lion Controls (RLC) GCM422 module to interface with an RLC model DMPC printer or connect to a Legend Plus in a 20 mA communication loop with other units. When all connections are made, replace the terminal block into its proper location. -48- SERIAL CONNECTIONS CONNECTING TO A HOST TERMINAL Six Legend Plus units are used to monitor and control parts packaging machines in a plant. The Legend Plus units are located at each machine in the production area of the building. A communication line is run to an Industrial computer located in the production office. The drawing shows the line connection. Each Legend Plus is programmed f or a d ifferent address and are all programmed for the same baud rate and parity as the computer (ex. 9600 baud, parity even). An application program is written to send and receive data from the units using the proper commands. -49- TROUBLESHOOTING SERIAL COMMUNICATIONS If problems are encountered when interfacing the Legend Plus(s) and host devices or printers, the following check list can be used to help find a solution. 1. Check all wiring. Refer to the previous application examples and use them as a guide to check your serial communication wiring. Proper polarity of all Legend Plus(s) and other peripherals must be observed. 2. Check RS232/RS485 configuration jumpers for proper interface selection. 3. If the Legend Plus is connected to a “host computer”, device or printer, check to make sure that the computer or device is configured with the same communication format as the Legend Plus. The communication format that the Legend Plus will accept is; 1 start bit, 7 or 8 data bits, no parity or 1 parity bit (odd or even), and 1 stop bit. 4. Check the baud rate and parity in the Program Communication Module and make sure all devices on the line have the same baud rate and parity. 5. Check the Legend Plus’s unit address. If the Address command is not used when transmitting a command to the Legend Plus, the Legend Plus’s address must be set to 0. See “Sending Commands & Data” for command structure. 6. If two-way communications are to be established between the Legend Plus and a computer, have the computer receive transmissions from the Legend Plus first. Activating a User Input, programmed for the print request function, will initiate transmissions from the Legend Plus. 7. When sending commands to the Legend Plus, an asterisk *(2Ah) must terminate the command. NO CARRIAGE RETURNS (0Dh) OR LINE FEED (0Ah) CHARACTERS SHOULD BE SENT TO THE LEGEND PLUS. If they are sent, the Legend Plus will respond by transmitting an “E”. 8. In multiple unit configurations, make sure each unit has a different address other than zero. If a transmit value or print request command is issued, an asterisk (* ) must be sent before sending another transmission. 9. In some RS485 applications, a twisted pair with a signal ground may be needed to establish a ground reference. The signal ground is required if the equipment does not shave internal bias resistors connected to the transceiver lines. The signal ground is connected from only one Legend Plus to the equipment. -50- INSTALLATION & CONNECTIONS Installation Environment temperature and provides good air circulation. Placing the unit near devices that generate excessive heat should be avoided. The bezel should be cleaned only with a soft cloth and neutral soap product. Do NOT use solvents. Continuous exposure to direct sunlight may accelerate the aging process of the bezel. Do not use tools of any kind (screwdrivers, pens, pencils, etc.) to operate the keypad of the unit. Before installing the Legend Plus into the panel, the user should first become familiar with the unit. Also, it may be desirable to program the unit and set the appropriate DIP switches for the application. When programming is complete, all parameters will be saved in nonvolatile memory. The Program Disable DIP switch used with an external User Input, programmed for the program disable function, provides various levels of security to prevent accidental or unauthorized programming changes. The Legend Plus should be installed in a location that does NOT exceed the maximum operating Installation The unit meets NEMA 4X/IP65 requirements for indoor use, when properly installed. The units are intended to be mounted into an enclosed panel with a gasket to provide a water-tight seal. Two mounting clips and screws are provided for easy installation. Consideration should be given to the thickness of the panel. A panel that is too thin may distort and not provide a water-tight seal, therefore the recommended minimum panel thickness is 1/8" (3.2 mm). The recommended clearance behind the panel for mounting clip installation is 3.0" (6.45 cm) H x 4.0" (10.16 cm) W. After the panel cut-out is completed and deburred, carefully apply the gasket to the panel. DO NOT APPLY THE ADHESIVE SIDE OF THE GASKET TO THE BEZEL. Insert the unit into the panel as depicted in the drawing. Thread the screws into the clips until the pointed end just protrudes through the other side. Install each mounting clip by inserting the case tabs of the clip into the holes, located on either side of the bezel. Then snap the rear end of the clip into the case and slide the clip towards the rear of the unit, locking it in place. Tighten the screws evenly to apply uniform compression, thus providing a water-tight seal. Caution: Only minimum pressure is required to seal panel. Do NOT over tighten screws. -51- EMC COMPLIANCE INSTALLATION ADDITIONAL EMC INSTALLATION GUIDELINES This unit complies with the Electromagnetic Compatibility (EMC) standards listed in the specifications. Compliance to the EMC standards was demonstrated by means of a test set-up using the following installation methods: 1. Unit installed in a metal panel mounted to an open aluminum rack connected to earth ground (protective earth). 2. Shielded (screened) cables for Signal and Control inputs, and solid state outputs (01-06 SNK) with shield drain wire connected to earth ground at the mounting panel only. Although this unit is designed with a high degree of immunity to ElectroMagnetic Interference (EMI), proper installation and wiring methods must be followed to ensure compatibility in each application. The type of the electrical noise, source or coupling method into the unit may be different for various installations. Listed below are some additional EMC guidelines for successful installation in an industrial environment. 1. Use shielded (screened) cables for all Signal and Control inputs. The shield (screen) pigtail connection should be made as short as possible. The connection point for the shield depends somewhat upon the application. Listed below are the recommended methods of connecting the shield, in order of their effectiveness. a. Connect the shield only at the panel where the unit is mounted to earth ground (protective earth). b. Connect the shield to earth ground at both ends of the cable, usually when the noise source frequency is above 1 MHz. c. Connect the shield to common of the unit and leave the other end of the shield unconnected and insulated from earth ground. 2. Never run Signal or Control cables in the same conduit or raceway with AC power lines, conductors feeding motors, solenoids, SCR controls, and heaters, etc. The cables should be run in metal conduit that is properly grounded. This is especially useful in applications where cable runs are long and portable two-way radios are used in close proximity or if the installation is near a commercial radio transmitter. 3. Signal or Control cables within an enclosure should be routed as far away as possible from contactors, control relays, transformers, and other noisy components. Multi-conductor Cable Function Used For Belden #8451 - 2 conductor, #22 AWG User Input 4/Inhibit twisted pair w/ foil shield and drain wire Belden #8771 - 3 conductor, #22 AWG Input A, Input B, User Inputs 1,2 & with foil shield and drain wire 3, 01-06 SNK (solid state outputs) Alpha #2404 - 4 conductor, #22 AWG RS485/RS232 with foil shield and drain wire 3. EMI line filter (Corcom #1VB3) placed on the DC power supply when DC powered. Test: EN 61000-4-4 EFT and ENV 50141 RF Conducted Immunity. 4. Ground shield or ferrite suppression core (TDK #ZCAT3035-1330A) at device end (opposite end from unit) on serial communication cable eliminates serial transmission garble. Test: RF Conducted Immunity per ENV 50141 It should be noted that the methods listed above may not be necessary for every unit installation. For the purpose of EMC testing, every input and output line on the unit was connected with 25 feet (8 m) of cable. In extremely high EMI environments, additional measures may be needed. The unit becomes more immune to EMI with fewer I/O connections. Cable length, routing and shield termination are very important and can mean the difference between a successful or troublesome installation. -52- ADDITIONAL EMC INSTALLATION GUIDELINES (Cont’d) 4. In extremely high EMI environments, the use of external EMI suppression devices, such as ferrite suppression cores, is effective. Install them on Signal and Control cables as close to the unit as possible. Loop the cable through the core several times or use multiple cores on each cable for additional protection. Install line filters on the power input cable to the unit to suppress power line interference. Install them near the power entry point of the enclosure. The following EMI suppression devices (or equivalent) are recommended: Ferrite Suppression Cores for signal and control cables: Fair-Rite # 0443167251 (RLC #FCOR0000) TDK # ZCAT3035-1330A Steward #28B2029-0A0 Line Filters for input power cables: Schaffner # FN610-1/07 (RLC #LFIL0000) Schaffner # FN670-1.8/07 Corcom #1VB3 Corcom #1VR3 Note: Reference manufacturer’s instructions when installing a line filter. 5. Long cable runs are more susceptible to EMI pickup than short cable runs. Therefore, keep cable runs as short as possible. 6. Switching of inductive loads produces high EMI. Use of snubbers across inductive loads suppresses EMI. Snubbers: RLC #SNUB0000 terminal and tighten down the screw until the wire is clamped in tightly. Each terminal can accept up to two 18-gage wires. After the terminal block is wired, install it in the proper location at the rear of the unit. Wire each terminal block in this manner. WIRING CONNECTIONS DC POWER WIRING The DC power is connected to the bottom left terminals TBA 3 & 4 marked +12 VDC and common. The DC power source must be capable of supplying the unit’s rated current (250 mA) and be within the specified ±20% variation limit. It is not necessary to provide battery backup to retain programmable information. The Legend Plus has non-volatile memory and information is stored on power down (Refer to block diagram). USER INPUT WIRING Programmable external user inputs are digital inputs that are active when connected to TBC #3 Common. The use of shielded cable is recommended. Follow the Additional EMC Installation Guidelines for shield connection. A.C. POWER WIRING The AC power is connected to the bottom left terminals TBA 1 & 2 marked AC PWR. The voltage selector switch, located at the side of the unit, is used to select the proper voltage. The switch is a slide movement type and can be set by using a small screwdriver. If the switch is toward the front of the unit, it is set for 115 VAC input. If the switch is towards the rear of the unit, it is set for 230 VAC input. The switch is in the 230 VAC position when shipped from the factory. Note: Before applying power to the unit make sure the A.C. power switch is set for the proper voltage setting. To reduce the chance of noise spikes entering the AC line and affecting the unit, the AC power should be relatively “clean” and within the specified ±10% variation limit. Connecting power from heavily loaded circuits or circuits that also power loads that cycle on and off, (contactors, relays, motors, etc.) should be avoided. The bottom board has a removable terminal block (TBA) where the solid state outputs and the power connections are made. The top board has a removable terminal block (TBB) where the signal inputs, User Inputs, and serial communications connections are made. When wiring the unit, remove the terminal block and use the numbers on the top label to identify the position number with the proper function. All conductors should meet voltage and current ratings for each terminal. Also cabling should conform to appropriate standard s o f good installation, local codes and regulations. It is recommended that power supplied to the unit (AC or DC) be protected by a fuse or circuit breaker. Strip the wire, leaving approximately ¼" bare wire exposed (stranded wires should be tinned with solder). Insert the wire into the SERIAL COMMUNICATIONS Refer to the Serial Communications section of the manual, for wiring and operational procedures. -53- SIGNAL WIRING INPUTS A & B Input A and Input B have the same input circuitry and share the same common. Input A and Input B each have separate DIP switches for setting the type of signal input. A Magnetic Pickup or Logic Input signal can be sent to either input. When a MAGNETIC PICKUP is used, the Sink/Source DIP switch, for the appropriate input, must be in the “SRC” position or the unit will not receive the signal. The HI/LO FRQ DIP switch affects the maximum input frequency at that input. The Input schematic shows the details of Input A and Input B circuitry. Each input has three DIP switches associated with its input. The functions of these switches are as follows: INPUT A SW1 - MAG: Sets input for a Magnetic Pickup signal. Sensitivity: 200 mV peak; hysteresis: 100 mV LOGIC: Sets input for a Logic signal. Input trigger levels: VIL = 1.5 V max; VIH = 3.75 V max. Note: SW2 must be in the “SRC” position for a Magnetic Pickup signal. SW2 - SNK: Provides a 7.8 KW internal pull-up resistor for sensors with current sinking outputs. SRC: Provides a 3.9 KW internal pull-down resistor for sensors with current sourcing outputs. SW3 - HI FRQ: Removes damping capacitor and allows operation up to the max. frequency. LO FRQ: Connects damping capacitor for switch contact debounce. Limits count speed to 50 cps max. Min. count pulse ON or OFF time is 10 msec. Note: The HI/LO FRQ selection switch must be set on “LO FRQ” when switch contacts are used to generate count input signals. The “LO FRQ” mode provides very high immunity against electrical noise pickup. It is recommended that this mode also be used, whenever possible, with electronic sensor outputs. The “LO FRQ” mode can be used with any type of sensor output, provided count pulse widths never decrease below 10 msec, and the count rate frequency does not exceed 50 Hz. INPUT B SW4 - Same as SW1 SW5 - Same as SW2 Note: SW5 must be in the “SRC” position for a Magnetic Pickup signal. SW6 - Same as SW3 Note: A Magnetic Pickup type sensor should not be used unless a large enough signal is provided at all speeds of operation. -54- NOTES: 1. SENSOR VOLTAGE AND CURRENT The +12 VDC (in/out) terminal can supply voltage to a sensor within a ±25% variation, due to line and internal load variations. All RLC sensors will accommodate this variation. 2. HI/LO FRQ SELECTION The HI/LO FRQ selection switch must be set on “LO FRQ” when switch contacts are used to generate count input signals. The “LO FRQ” mode also provides very high immunity against electrical noise pickup. It is recommended that this mode also be used, when possible, with electronic sensor outputs. The “LO FRQ” mode can be used with any type of sensor output, provided count pulse widths never decrease below 10 msec, and the count rate frequency does not exceed 50 cps. 3. When shielded cable is used, the shield should be connected to “COMM.” at the unit and left disconnected at the sensor end. 4. Inputs A and B can accept source pulses from other circuits up to +28 V in amplitude. For voltages above +28 V, a limiting resistor and zener diode should be used to limit the voltage at the input. DIP SWITCH SET-UP The DIP switches are accessible through the side of the Legend Plus. The DIP switch positions and their functions are shown below: -55- VARIOUS SENSOR OUTPUT CONNECTIONS COUNT SWITCH OR ISOLATED TRANSISTOR OUTPUTS CURRENT SOURCE CONNECTED (COUNT ON OPENING) CURRENT SINK CONNECTED (COUNT ON CLOSING) (See Note 1) SENSORS WITH -EF OUTPUT-CURRENT SRC CONN. SENSORS WITH CURRENT SINK OPEN COLLECTOR (NPN O.C.) (COUNT ON FALLING EDGE) (COUNT ON TURN-ON) SENSORS WITH CURRENT SOURCE OUTPUT (PNP O.C.) (COUNT ON TURN-OFF) * * SEE NOTE 4 FOR INPUT * SEE * SEE SEE NOTE 2 NOTE 2 NOTE 2 RLC SENSOR MODEL: LMP-EC RLC SENSOR MODELS: ASTC, LMPC, LSC, PSAC, RPGB, RPGC, RPGH VOLTAGES GREATER THAN +12V. RLC SENSOR MODELS: PR & RR PHOTO-ELECTRICS 2-WIRE PROXIMITY SENSORS MAGNETIC PICKUPS A.C. INPUTS FROM INVERTERS, INTERFACING WITH CMOS INTERFACING WITH TTL * SEE * SEE Note 2 NOTE 2 A.C. SIGNALS OVER 50VAC PEAK SHOULD BE ISOLATED BY A STEP DOWN TRANSFORMER. -56- NOTE: IF EXTERNAL SUPPLY IS USED TO POWER CMOS CIRCUIT, THE VOLTAGE MUST BE > DC OUT VOLTAGE NOTE: CIRCUIT SHOWN FOR STD TTL OUTPUT. TTL CIRCUITS ARE AVAILABLE W/OPEN COLLECTOR OUTPUTS ELIMINATING THE NEED FOR A DIODE CLAMP. SPECIFICATIONS & DIMENSIONS 1. DISPLAY: 2X8, 0.3" (7mm) high characters, negative image transmissive LCD, with Single (green or red) or Dual Color (green and red) LED backlighting. 2. POWER: AC Operation: 115/230 VAC ±10%, 50/60 Hz, 10 VA, switch selectable. DC Operation: +12 VDC ±20% @ 250 mA. max. 3. MEMORY: Non-volatile memory retains all programming information. Count and Preset values are written to non-volatile memory when power is interrupted. All other programming parameters are written to memory when programming mode is exited. If power is removed while in the programming menus, the parameters are restored to previously saved settings. Data Retention: 10 years minimum Message/Mnemonics Memory: 804 bytes available (with factory settings loaded). 4. SENSOR POWER: +12 VDC ±25% @ 100 mA. 5. INPUTS A and B: DIP Switch selectable to accept count pulses from a variety of sources including switch contacts, outputs from CMOS or TTL circuits, and all standard RLC sensors. DIMENSIONS In inches (mm) LOGIC: Input trigger levels VIL = 1.5 VMAX; VIH = 3.75 VMIN. Current sinking: Internal 7.8 KW pulled up to +12 VDC , IMAX = 1.9 mA. Current sourcing: Internal 3.9 KW pull-down, 7.3 mA @ 28 VDCMAX. Debounce: Damping capacitor provided for switch contact bounce. Limits count speed to 50 Hz and input pulse widths to 10 msec minimum. MAGNETIC PICKUP: Sensitivity: 200 mV peak. Hysteresis: 100 mV. Input impedance: 3.9 KW @ 60 Hz. Maximum input voltage: ±50 Vp Note: For magnetic pickup input, the sink/source DIP switch must be in the SRC position. 6. RATE ACCURACY: +0.01%. 7. RATE MINIMUM INPUT FREQUENCY: 0.01 Hz. Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 3.0" (76.2)H x 4.0" (101.6)W. PANEL CUT-OUT -57- 11. SERIAL COMMUNICATIONS: Type: Jumper selectable RS485 or RS232. Can connect up to 32 units when using RS485 interface. Baud Rate: Programmable from 1200 to 9600. Maximum Addresses: Programmable from 00 to 99. (Actual number on a line is limited by hardware specifications) Transmit Delay: Programmable for 0.002 or 0.100 second. Data Format: 10 Bit Frame; 1 start bit, 7 or 8 data bits, 1 or no parity bit, and 1 stop bit. Parity is programmable for either ODD (7 data bits), EVEN (7 data bits), or NO Parity (8 data bits). 12. OUTPUT(S): Solid-State: Current sinking NPN open collector transistor. VCE = 1.1 VSAT @ 100 mA max. VOH = 30 VDC max. (Internal Zener Diode Protection). Programmable Timed Output(s): Programmable time ranges from 0.01 to 99.99 seconds, ±0.05% - 11 msec. max. Output Time Required to Request Message: 50 msec. Count Boundary Output Response Time: 10 msec. nominal 13. ENVIRONMENTAL CONDITIONS: Operating Temperature: 0 to 50°C Storage Temperature: -40 to 70°C Operating and Storage Humidity: 85% max. relative humidity (non-condensing) from 0°C to 50°C. Vibration According to IEC 68-2-6: Operational 5 to 150 Hz, in X, Y, Z direction for 1.5 hours, 2 g. Shock According to IEC 68-2-27: Operational 20 g (10 g relay), 11 msec in 3 directions. Altitude: Up to 2000 meters 8. MAXIMUM COUNT RATE IN KHz: MODEL LGPM (Multi) CNT + DIR X1 X2 13 6 QUAD X1 X2 6 5 X4 2.5 ADD/ADD ADD/SUB X1* X1* 12 6 Notes: 1. Maximum count rates given are for counter set for Auto reset with the auto cycle preset set to an equivalent of 100 count pulses or greater. With auto cycle presets less than 100 counts the maximum count rates may be lower. The actual Preset value for 100 count pulses, with Count SF = 0.5000 and Count Scale Multiplier = X1, would be 50. 2. Maximum count rate given for X2 and X4 count modes are given for 50% duty cycle signals and Quad signals with 90o phase shift. * - Inputs A and B count rates summed. 9. MAXIMUM COUNT CAPACITY: Count: 9 digits internal (non-scaled), 6 digits displayable (scaled). 10. CONTROL INPUTS: Programmable User Inputs (4): USR INP 1 to 3: Internal 10 KW pull-up to +5 VDC, VIL = 1.0 VMAX; VIH = 4.0 VMIN, Vmax = 30 VDC, response time = 30 msec typical, 100 msec max. (count rate dependent). USR INP 4/INH: Internal 10 KW pull-up to +5 VDC, VIL = 1.5 VMAX; VIH = 3.0 VMIN,, Vmax = 30 VDC, response time = 30 msec typical, 100 msec max. (count rate dependent). INHIBIT Response time = 50 msec max. User Inputs Programmed for Binary Message Request: Debounce = 100 msec. (Binary Message Request Inputs must be stable for 100 msec. before a message is requested). -58- 14. CERTIFICATIONS AND COMPLIANCES: SAFETY IEC 61010-1, EN 61010-1: Safety requirements for electrical equipment for measurement, control, and laboratory use, Part 1. IP65 Enclosure rating (Face only), IEC 529 Type 4X Indoor Enclosure rating (Face only), UL50 ELECTROMAGNETIC COMPATIBILITY Immunity to EN 50082-2 Electrostatic discharge EN 61000-4-2 Electromagnetic RF fields EN 61000-4-3 Fast transients (burst) EN 61000-4-4 RF conducted interference EN 61000-4-6 Power frequency magnetic fields EN 61000-4-8 Level 2; 4 Kv contact Level 3; 8 Kv air Level 3; 10 V/m 80 MHz - 1 GHz Level 4; 2 Kv I/O1 Level 3; 2 Kv power Level 3; 10 V/rms 1 150 KHz - 80 MHz Level 4; 30 A/m Emissions to EN 50081-2 RF interference EN 55011 Enclosure class A Power mains class A Note: 1. When the unit is DC powered from terminal TBA pin 5 (common) and terminal TBA pin 3 (DC OUT/IN) a power line filter was installed, RLC #LFIL0000 or equivalent, so as not to impair the function of the unit. Refer to EMC Compliance Installation for additional information 15. CONSTRUCTION: High impact plastic case with clear viewing window. This unit is rated for NEMA 4X/IP65 indoor use. Installation Category II, Pollution Degree 2. Panel gasket and mounting clips included. 16. WEIGHT: 1.5 lbs. (0.68 Kg) -59- TROUBLESHOOTING GUIDE For further technical assistance, contact technical support at the numbers listed on the back cover of the instruction manual. PROBLEMS NO DISPLAY CHECKSUM ERROR 1 OR 2 ON DISPLAY UNIT DOES NOT COUNT UNIT WILL NOT ACCEPT THE DESIRED PRESET UNIT COUNTS INCORRECTLY POSSIBLE CAUSE 1. Power off 2. Improperly wired 3. Voltage selector switch in the wrong position. 4. Power in a Brown out condition 5. If powered by +12 VDC source, not enough current to drive Legend Plus. 6. Blank message requested. REMEDIES 1. Verify power. 2. Check wiring. 3. Check switch position. 4. Verify voltage reading. 5. Verify Source current rating. 6. Check message, Output message request User Input programming. 7. Mnemonics/Display not programmed properly. 7. Check Display programming. 1. Data error detected by processor. 1. Press “ENT” key. a. Check all programming parameters. 2. Check signal lines for possible noise sources. 1. No input signal. 1. Check sensor connections. a. Verify power to sensor. 2. Type of input signal incorrectly selected. 2. Check DIP switch setting on side of unit. 3. Count Inhibited. 3. Disable Count Inhibit. 4. Scale factor and/or multiplier value too small. 4. Check scale factor value and scale multiplier values. 1. When a count scale factor greater than 1 is used, the 1. Unit automatically adjusts preset to be evenly divisible by the scale factor. preset value must be evenly divisible by the scale factor. 1. Input signal type incorrectly selected. 1. Check DIP switches. Set HI/LO FRQ. switch to LO for a count speed of less than 50 Hz. 2. Inputs improperly connected. 2. Check sensor input connections. 3. Electrical noise interference. 3. Check power source for noise. a. Check signal wire routing. 4. Incorrect counting mode. 4. Verify programming in “Program Cntr Module”. 5. Scale factor incorrect. 5. Verify scale factor value. -60- TROUBLESHOOTING GUIDE (Cont’d) PROBLEMS COUNT, PEAK, OR VALLEY VALUES WILL NOT RESET WHEN A MANUAL RESET IS PERFORMED CAN NOT ENTER INTO PROGRAMMING MENUS PRESETS, COUNTER LOAD, OR SCALE FACTORS CAN BE VIEWED BUT NOT CHANGED POSSIBLE CAUSE 1. User Input NOT properly programmed. REMEDIES 1. Verify programming in “Program User Module”. 1. Front panel disabled. UNIT COUNTS WHILE RESET IS ACTIVATED PRESET OR COUNTER LOAD VALUE LOADS SMALLER NUMBER THAN WHAT IS ENTERED OUTPUT WILL NOT RESET 1. User Input Reset mode set for Momentary reset. 1. Check “Front Panel Accessible Functions With Program Disable” section in manual. 1. Verify programming in “Program Options Module” sub-menu Operator Access. 2. Check “ Front Panel Accessible Functions With Program Disable” section of manual. 1. Program User Input to a Maintained reset. 1. Front panel disabled. 1. Entered number exceeds internal count capacity 1. Check scaling. Reduce number of pulses per unit of (Scale multiplier/Scale factor too small). measure. 1. Output assigned to wrong display (Count or Rate). 1. Verify programming in “Program Outputs Module”. 2. Reset with count disabled (Program Outputs 2. Verify programming in “Program Outputs Module”. Module). 3. User Input NOT properly programmed. 3. Verify programming in “Program User Module”. -61- TROUBLESHOOTING GUIDE (Cont’d) PROBLEMS NO RATE INDICATION INCORRECT RATE READING RATE DISPLAY FLASHING OVERFLOW POSSIBLE CAUSE 1. No signal at Input A. REMEDIES 1. Check sensor connections. a. Verify power to sensor. 2. Type of input signal selected incorrectly. 2. Check DIP switch setting on side of unit. 3. Rate Scale factor and/or Rate Scale Multiplier too 3. Check scale factor value and scale multiplier values. small. 1. Input signal type incorrectly selected. 1. Check DIP switches. Set HI/LO FRQ. switch to LO for a count speed of less than 50 Hz. 2. Inputs improperly connected. 2. Check sensor input connections. 3. Electrical noise interference. 3. Check power source for noise. a. Check signal wire routing. 4. Scale factor incorrect. 4. Verify scale factor value. 5. Rate input signal too high of a frequency. 5. Verify input signal. 1. Rate Scale Factor, Multiplier and/or Conversion 1. Check values. Factor values too large. 2. Minimum update time set too high for input rate. See Note in “Programming Rate” Section. -62- APPENDIX “A” - SCALING FOR COUNT INDICATION SCALING FOR COUNT INDICATION For the preceding example, the Total Scaling, “K T ”, is calculated by plugging in 2 and 48 in the formula: KT = 2 ÷ 48 = 0.041667 The Legend Plus is factory set to provide 1 count on the display for each pulse that is input to the unit. In many applications, there is not a one to one correspondence between input pulses and display units. In these applications it is necessary for the Legend Plus to scale or multiply the input pulses by a scaling factor to achieve the proper display units desired (feet, meters, gallons, etc.). The Count Scale Factor, the Count Scale Multiplier, and the Number of Count Edges are used in scaling the input pulses to the desired reading. The number of count edges is determined in the Program Counter Module. For example, the number of edges for the CNT+DIRX1 mode is one and the QUAD X4 mode is four. All three are factored together to provide the Scaling necessary for the Process display. The Count Scale Factor and Scale Multiplier are programmed in the Program Scaling section. The first step in scaling requires the Number of Pulses per Display Units to be obtained. This may require a small amount of deductive reasoning. As previously stated, the Total Scaling, “KT”, is the combination of the Count Scale Factor, Scale Multiplier, and Number of Count edges. In many applications the Total Scaling, “KT”, can be programmed directly into the Count Scale Factor, “SF”, in which case the Scale Multiplier and Number of Count Edges can be left at the factory settings of X1. In some applications, more display resolution may be required. When the Total Scaling (KT) is greater than 1.0000 and only one edge per count pulse is used, there may not be enough display resolution. Example: With a Total Scaling of 2.000, when an input pulse is generated, the display increments by 2. If the display units are in feet, when 3 feet have gone by, the display still reads 2. It will not increment again until 4 feet have been accumulated. With this amount of display resolution it would be impossible to set the Preset and have the output respond at odd feet intervals (1, 3, 5, etc.). To increase resolution, the Number of Count edges must be increased. This can be achieved by selecting the CT+DIRX2 mode (Count plus direction times 2) in the Program Count Module or by selecting the QUAD X4 mode, if quadrature counting is being used. If enough resolution still has not been attained, more input pulses need to be generated per display unit. The amount of resolution required varies depending on the particular application. In cut-to-length applications, a high amount of resolution is often necessary. However, in totalizing applications, display resolution may not be important. It should be noted that whenever the number of count edges is increased to 2 or 4, the maximum count frequency decreases. (See Specifications for maximum count frequency). Note: When using 2 or 4 edge counting for length sensor, on/off duty cycle must be 50% to maintain max. accuracy (mag. pickup will not work). Example: A 48-tooth gear is mounted to a 2 ft circumference feed roll in a paper processing plant. It is desired to display the footage of paper processed per day. In this example, the display units are in feet. A sensor sensing the gear teeth provides 48 pulses for each revolution of the feed roll. Each revolution equates to a linear distance of 2 feet. The number of Display Units desired is 2. The Number of Pulses per Display Units is 48. When the number of Display Units and the Number of Pulses have been obtained, the Total Scaling can be calculated. The Total Scaling, denoted as “KT”, is simply the total amount of scaling required for the Process. It is obtained by dividing the Display Units by the Number of Pulses as shown in Formula #1 below. FORMULA #1: KT = Display Units ÷ Number of Pulses WHERE: KT = Total Scaling. Display Units = The number of desired units (revolutions, feet, 10ths of feet, meters, etc.) that would be acquired after the Number of Pulses has occurred. Number of Pulses = The Number of pulses required to achieve the number of Display Units. -63- Following our continuing example, it is easy to see that the Remaining Scaling Factor, “KR” (0.041667), cannot fit into the Count Scale Factor Value without losing significant digits. Using the Formula above and a Scale Multiplier value of 0.01 allows us to get the maximum number of significant digits possible for the Count Scale Factor value: SF = KR ÷ SCM = 0.041667 ÷ 0.01 = 4.1667 Once the Number of Count Edges (NCE) to be used has been determined, the Remaining Scaling factor required, “KR”, can be calculated. This is the Total Scaling, “KT”, divided by the Number of Count edges used as shown in Formula #2: FORMULA #2: KR = KT ÷ NCE WHERE: KR = Remaining Scaling Factor. KT = Total Scaling. NCE = Number of Count Edges. COUNTER SCALING EXAMPLE: EXAMPLE #1: A flow sensor provides 62 pulses per gallon. Calculate the scaling required to provide a display reading in gallons. The number of “Display Units” displayed after 62 pulses have been counted should be 1. In our original example, the Total Scaling, “K T” was determined to be 0.041667. Since this value is less than one, sufficient pulse information is being generated, i.e., there is enough resolution for the units selected. The Number of Count edges can be left at the factory set value of X1. The Total Scaling, “KT”, therefore equals the Remaining Scaling Factor, “KR”. KR = 0.041667 ÷ 1 = 0.041667 If the remaining scaling is between 0.6000 and 5.9999, it can be programmed directly into the Count Scale Factor value and the X1 factory setting for the Count Scale Multiplier “SCM”, can be used. STEP 1 - Calculate the Total Scaling, “KT”, using Formula #1. FORMULA #1: KT = Display Units ÷ Number of Pulses = 1 ÷ 62 = 0.016129 STEP 2 - In this application 62 pulses per gallon provides more than enough resolution, so the Number of Count Edges (Selected in the Program Counter Module) is set to a value of X1. With an “NCE” value of 1, the remaining scaling factor required is still 0.016129. COUNT SCALE MULTIPLIER The general rule for choosing a SCM value is, when the Remaining Scaling Factor, “KR”, is less than 0.6000, a SCM value of 0.1 or 0.01 can be used to get a Count Scale Factor value between 0.6 and 5.9999 or to the point where the maximum number of significant digits is obtained. FORMULA #2 KR = KT ÷ NCE = 0.016129 ÷ 1 = 0.016129 STEP 3 - To provide maximum scaling accuracy, a Scale Multiplier value is chosen that will give the maximum amount of significant digits in the Count Scale Factor. A value of 0.01 results in a Count Scale Factor Value of 1.6129. FORMULA #3 SF = KR ÷ SCM = 0.016129 ÷ 0.01 = 1.6129 FORMULA #3: SF = KR ÷ SCM WHERE: SF = Count Scale Factor. KR = Remaining Scaling Factor. SCM = Count Scale Multiplier. -64- COUNTER SCALING EXAMPLE: (Cont’d) EXAMPLE #2: A quadrature Rotary Pulse Generator that provides 100 pulses per revolution is coupled to a feed roll that is 2.5 feet in circumference. It is desired to read in feet with display resolution to the nearest hundredth of feet (0.01). In this application, the requirement is for the display to read in hundredths of a foot. A 2.5 ft. distance equates to 250 “Display Units” (hundredths). The “Number of Pulses” for 2.5 ft. is 100, as stated. From the information obtained, the Total Scaling, “KT”, can be calculated, using Formula #1. KT = Display Units ÷ Number of Pulses = 250 ÷ 100 = 2.5 With a Total Scaling, “KT”, of 2.5, it can easily be seen that for every pulse that is input, the display increments by 2.5 display units (hundredths). The application requires resolution to the nearest hundredth of a foot. To get higher resolution, Quadrature X4 Input Response Mode is selected. This provides four times the resolution. Using Formula #2, and 4 for the “Number of Count Edges”, the Remaining Scaling, “KR”, is calculated. KR = KT ÷ Number of Count Edges = 2.5 ÷ 4 = 0.625 At this point, it can be seen that the Remaining Scaling Factor value of 0.625 fits into the Count Scale Factor value range without losing any significant digits or scaling it any further. Because of this, the Scale Multiplier (SCM) factory set value of X1 is used, and 0.6250 is programmed directly in for the Count Scale Factor, “SF”. SF = KR ÷ SCM = 0.6250 ÷ 1 = 0.6250 -65- APPENDIX “B” - SCALING FOR RATE INDICATION to revolution units. The Legend Plus has a Rate Scale Factor and a Rate Scale Multiplier to scale pulse units to the desired display units. They are programmed in the Program Scaling section. Both are used to attain the Total Scaling, “K T ”. To calculate the Total Scaling, “K T ”, for the application, the following formula is used. The Legend Plus offers a simplified method for scaling the rate portion of the indicator. The method does not require time unit conversions. The desired time format (Rate Per Second, Rate Per Minute, Rate Per Hour) is simply selected as part of the programming procedure. Due to the way the rate is calculated (See “General Description” section), high resolution and accuracy can be realized at all input rates, slow or fast. Note: It is not necessary to increase the pulse information to obtain higher resolution. The Rate Minimum Update Time can be programmed from 0.1 up to 99.9 seconds to provide averaging in applications where the input pulse spacing is not stable. The Update time selected, however, will not affect the scaling in any manner. Scaling the Rate channel involves programming the Legend Plus so that input pulses to the unit are scaled to the desired display units (revolutions, feet, meters, etc.) and in the desired time format (Rate Per Second, Rate per Minute, Rate Per Hour). If the rate indicator is to display the rate at which the counter is counting, the rate indicator can be programmed with the same scaling parameters as the counter. The only other requirement is that the desired “Rate Conversion Factor” be selected to provide the rate display in the desired time format, Rate per Second (X1), Rate per Minute (X60), or Rate per Hour (X3600). This automatically scales the rate by X1 (1 pulse per second), X60 (60 pulses per minute), or X3600 (3600 pulses per hour). Note: The rate uses only the negative edge of the pulse at Input A. The counter uses both edges of the input pulse for a X2 or X4 count mode. The rate can show the same reading as the count, but take into consideration the counter mode selected. If the rate application is to display a specific Display Unit, then to scale the rate, it is only necessary to know the number of pulses per display unit desired or units (feet, revolutions, etc.). FORMULA #1: KT = Display units ÷ Number of pulses WHERE: KT = Total Scaling. Display Units = The number of desired units (revolutions, feet, 10ths of feet, meters, etc.) that would be acquired after the Number of Pulses has occurred. Number of Pulses = The Number of pulses required to achieve the number of Display Units. Using the example previously discussed, the desired display unit would be 1 revolution and the number of pulses per display unit would be 48. Therefore, the Total Scaling would be 0.020833. KT = 1 rev ÷ 48 pulses per rev = 0.020833 In many applications the Total Scaling, “KT”, can be programmed directly into the Rate Scale Factor, “SF”, in which case the Scale Multiplier “SCM” can be left at the factory setting of X1. However, in some applications, such as the one above, it may be desired to obtain more significant digits in the Scale Factor, “SF”. These situations occur when “KT” does not calculate to an even number that will fit into the four decimal places available to the Scale Factor. The following formula can be used to calculate the Scale Factor when an SCM value other than X1 is needed. FORMULA #2: SF = KT ÷ SCM WHERE: SF = Rate Scale Factor. KT = Total Scaling. SCM = Rate Scale Multiplier. Example: A 48-tooth gear, which is coupled to a shaft, is being sensed and it is desired to indicate the shaft speed in revolutions, the display units will be in revolutions. It is obvious that 48 pulses will occur in one revolution. To convert the pulse units to revolutions, it is necessary for the Legend Plus to multiply the number of pulses by a scaling factor to convert the pulse units In this formula, the Total Scaling, previously calculated, is divided by the Scale Multiplier Value, “SCM”, to obtain the Scale Factor, “SF”. -66- RATE SCALE MULTIPLIER WHERE: RCF = 60 for display reading in Rate Per Minute or 3600 for display reading in Rate Per Hour The general rule for choosing an SCM value is, when the Total Scaling, “KT”, is less than 0.6000, an SCM value of 0.1 or 0.01 can be used to get a Scale Factor value between 0.6 and 5.9999, or to the point where the maximum number of significant digits is obtained. If the Total Scaling, “KT”, is greater than 5.9999, then an SCM value of 10, 100, or 1000 can be used to obtain a Scale Factor Value between 0.6 and 5.9999. In our initial example, the Total Scaling, “K T ” was determined to be 0.020833. It is easy to see that this number cannot be programmed into the Scale Factor, “SF”, without losing significant digits. Using formula #2 and the general rules stated above, a Scale Multiplier Value of 0.01 is chosen and the Scale Factor is calculated as shown below. This will provide the maximum amount of conversion accuracy possible. KT ÷ SCM = 0.020833 ÷ 0.01 = 2.0833 In situations where the Total Scaling is already in range of the Scale Factor (0.0001 to 5.9999) and when there are no significant digits that are lost, the Total Scaling, “KT”, can be programmed directly into the Scale Factor Value and a Scale Multiplier value of X1 (the factory set value) can be used. RATE SCALING EXAMPLE: EXAMPLE #1: A 60-tooth gear is mounted to a roll that has a circumference of 2 feet. It is desired to have a rate readout with a resolution in 10ths of feet per minute. Calculate the Scale Factor and Scale Multiplier values necessary to provide the desired readout. In this example one revolution of the web will provide 60 pulses for 2 feet of linear travel. Since the desired display units are to be in tenths of feet, it is necessary to convert 2 feet to tenths (2 ÷ .1 = 20), giving us 20 tenths (display units). The Total Scaling, “KT”, is calculated by simply plugging in the two numbers into Formula #1. KT = Display Units ÷ Number of Pulses = 20 ÷ 60 = 0.333333 To get the maximum number of significant digits in the Scale Factor we use formula #2 and a Scale Multiplier value of 0.1 as shown below. SF = KT ÷ SCM = 0.333333 ÷ 0.1 = 3.3333 To obtain rate indication in Feet Per Minute, the Rate Conversion Factor is programmed for the Rate per Minute mode. A decimal point is programmed to 0.0, which allows the unit to display in 10ths of feet. Example: If the desired display units are in feet and there are 100 pulses per foot, the Total Scaling, “KT”, would be 0.01. KT = Display units ÷ number of pulses = 1 ÷ 100 = 0.01 Since the Total Scaling, “KT”, is exactly 0.01, it can be programmed into the Scale Factor Value, “SF”, and the Scale Multiplier Value, “SCM”, can be left at its factory setting of X1. After the Scale Factor and Scale Multiplier values are selected, all that is necessary to complete the scaling is to choose the Rate Conversion Factor. The Rate Conversion Factor (RCF) can be selected to provide indication in Rate per Second (X1), Rate Per Minute (X60), or Rate per Hour (X3600). There may be situations where there are many more pulses per display unit than needed. In these situations the minimum SCM value (0.01) may not provide enough significant digits in the Scale Factor. To achieve more significant digits, the Rate Conversion Factor should be set to Rate per Second and the following formula be used. SF = KT x RCF ÷ SCM -67- EXAMPLE #2: The shaft of a positive displacement pump has a 14 tooth sprocket that is being sensed by a magnetic pickup. It is known that the unit pumps 810 liters of water per minute, when the shaft is turning 400 RPM. It is desired to have a display readout in liters per minute. With the Legend Plus, it is not necessary to deal with time unit conversions. From the information given, we know that when the shaft has turned 400 revolutions, 810 liters of water will have been pumped. The first step we need to take is to calculate the number of pulses that occur when 810 liters have been pumped. Number of Pulses = # of Rev x Pulses per Rev = 400 Rev x 14 PPR = 5600 pulses. We now have all the information necessary to scale the rate. The Total Scaling, “KT”, is calculated using Formula #1 as shown below. KT = Display Units ÷ Number of Pulses = 810 ÷ 5600 = 0.144643 It is noticed that there are more significant digits in the Total Scaling, “K T”, than there are available for the Scale Factor, “SF”. To acquire the maximum amount of significant digits for the Scale Factor, Formula #2 is used and a Scale Multiplier value of 0.1 is selected. SF = KT ÷ SCM = 0.144643 ÷ 0.1 = 1.4464 The Scale Factor, “SF”, equals 1.4464 (1.44643 rounded to 4 decimal places). This provides the maximum amount of conversion accuracy possible. The final step is to select a Rate Conversion Factor. The Rate Conversion Factor is chosen to be Rate Per Minute as was required. -68- APPENDIX “C” - APPLICATION A textile manufacturing company uses three ink jets to mark cloth at various locations. They need a counter to track the cloth measurement and p rovide outputs to the ink jets at predetermined points. Th ey also require displayed messages to inform their operators of changing line speed conditions and corrective actions that need to be taken. With its ability to monitor rate, count, provide multi-preset outputs and display user programmed messages, the Legend Plus Multi-preset counter is the best unit for the job. The cloth moves over a roller with a circumference of 13.20 inches. A 72 tooth gear is mounted on the roller. Due to the size of the gear, the best sensor would be the model HESS. The desired d isplay on the LGPM is tenths of inches. It is also desired to display a rate of tenths of inches per minute. With the Legend Plus, the scaling for the rate is the same as f or the counter. Outputs One through Three are programmed to the count display and will fire the ink jets at the appropriate intervals. The outputs are programmed for a Timed output. Outputs Four through Six are assigned to the rate display and will be programmed to request messages to appear on the display when the listed event occurs: Output 4 - Speed up Line #4 Output 5 - Slow down Line #4 Output 6 - Overspd STOP! (Top Priority) The following is a chart of the necessary programming as entered into the Legend Plus unit. -69- LEGEND PLUS PROGRAM SHEET RATE SCALE FACTORS COUNT SF RATE SF CNT. SCM CNT. D.P. RATE SCM RATE PER RATE D.P. CHG. CNT/ WITH SF 1.8333 1.8333 X1 0.1 X1 MINUTE 0.1 YES MIN. TIME MAX. TIME NO NO NO NO NO NO NO NO OUTPUT 1 ASSIGNED PHASE TYPE ACT/TIME OUTPUT END DLY TYPE ON DL TIME OF DL TIME OFF@P. RST/C REQ MSG # 5.0 COUNTER CNT. INPUT RESET AUTO. RST OPTIONS ACCESS P1 P2 P3 P4 P5 P6 CTLD. SF’S OUTPUTS 1.0 CT+DIRX1 TO ZERO DISABLED PRESET TRACKING P1 P2 P3 P4 P5 P6 TRACK TRACK TRACK TRACK TRACK TRACK PRO. CODE NONE NONE NONE NONE NONE NONE OUTPUT 3 ASSIGNED PHASE TYPE ACT/TIME DLY TYPE ON DL TIME OF DL TIME OFF @ P. RST/C REQ MSG # 23 PRESETS P1 P2 P3 P4 P5 P6 CL 36.0 180.0 360.0 1150.0 1250.0 1300.0 0 OUTPUT 5 ASSIGNED PHASE TYPE ACT/TIME DLY TYPE ON DL TIME OF DL TIME OFF @ P. RST/C REQ MSG # USER INPUTS BIN. MSG.REQ. USER INP. 1 USER INP. 3 USER F1 NONE NO MODE NO MODE NO MODE USER INP. 2 USER INP. 4 USER F2 NO MODE NO MODE NO MODE -70- TO CNT + TIMED 0.5 DISABLED UP EN – TO CNT + TIMED 0.5 DISABLED UP EN – TO RATE + BOUNDARY HI ACT NO DLY UP EN 3 OUTPUT 2 ASSIGNED PHASE TYPE ACT/TIME OUTPUT END DLY TYPE ON DL TIME OF DL TIME OFF @ P. RST/C REQ MSG # OUTPUT 4 ASSIGNED PHASE TYPE ACT/TIME DLY TYPE ON DL TIME OF DL TIME OFF @ P. RST/C REQ MSG # OUTPUT 6 ASSIGNED PHASE TYPE ACT/TIME DLY TYPE ON DL TIME OF DL TIME OFF @ P. RST/C REQ MSG # TO CNT + TIMED 0.5 DISABLED UP EN – TO RATE + BOUNDARY LO ACT NO DLY UP EN 2 TO RATE + BOUNDARY HI ACT NO DLY UP EN 4 LEGEND PLUS PROGRAM SHEET (Cont’d) DISPLAY DISPLY 1 D1 LINE 1 D1 LINE 2 D1 COLOR DISPLY 3 D3 LINE 1 D3 LINE 2 D3 COLOR SCRO. SPD DSP. LEVEL DSP. LEVEL CUST. DSP. CUST. DSP.1 CUST. DSP.2 G R MESSAGE CUST. DSP. 1 CUST. DSP. 2 GREEN DISPLY 2 D2 LINE 1 D2 LINE 2 D2 COLOR RATE-MNE CUST.DSP.1 GREEN PEAK-VAL VALI-VAL GREEN DISPLY 4 D4 LINE 1 D4 LINE 2 D4 COLOR CNT-MNE CNT-VAL GREEN NONE 5 5 VAL-RATE IPM VAL-CNT IN. MNEMONIC RATE PEAK VALLEY COUNT OVERFLOW SPEED P V INCHES OVERFLOW MSG. TYPE # TEXT PRIORITY BLINKING MULTIPLEX MOM/MNT REQ 2 2L BLOCK SPEED UP LINE #4 6 YES YES MNT CANCEL TIME SEC. COLOR TIL END MSG. TYPE 3 1L BLOCK # TEXT GREEN PRIORITY BLINKING MULTIPLEX MOM/MNT REQ SLOW DOWN LINE #4 6 NO YES MNT CANCEL TIL END -71- TIME SEC. COLOR MSG. TYPE TEXT # PRIORITY BLINKING MULTIPLEX MOM/MNT REQ CANCEL TIME SEC. COLOR GREEN 4 2L BLOCK OVERSPD STOP! 2 YES NO MNT TIL END RED APPENDIX “D” - ORDERING INFORMATION MODEL NO. LGPM SFLGP DESCRIPTION Multi Preset (6) Legend Plus w/Grn Backlighting Multi Preset (6) Legend Plus w/Red Backlighting Multi Preset (6) Legend Plus w/Dual Color Bcklghtng Legend Plus Programming Software, 3 ½", 1.44 M disk APPENDIX “E” - FLOWCHART FOLD-OUT (Insert) -72- PART NUMBER 115/230VAC & +12VDC LGPM0001 LGPM0101 LGPM0201 SFLGP LIMITED WARRANTY The Company warrants the products it manufactures against defects in materials and workmanship for a period limited to two years from the date of shipment, provided the products have been stored, handled, installed, and used under proper conditions. The Company’s liability under this limited warranty shall extend only to the repair or replacement of a defective product, at The Company’s option. The Company disclaims all liability for any affirmation, promise or representation with respect to the products. The customer agrees to hold Red Lion Controls harmless from, defend, and indemnify RLC against damages, claims, and expenses arising out of subsequent sales of RLC products or products containing components manufactured by RLC and based upon personal injuries, deaths, property damage, lost profits, and other matters which Buyer, its employees, or sub-contractors are or may be to any extent liable, including without limitation penalties imposed by the Consumer Product Safety Act (P.L. 92-573) and liability imposed upon any person pursuant to the Magnuson-Moss Warranty Act (P.L. 93-637), as now in effect or as amended hereafter. No warranties expressed or implied are created with respect to The Company’s products except those expressly contained herein. The Customer acknowledges the disclaimers and limitations contained herein and relies on no other warranties or affirmations. LGPM Cover.indd 3 7/11/2011 2:33:21 PM LGPM/IM - E 07/11 DRAWING NO. LP0283 Red Lion Controls Headquarters 20 Willow Springs Circle York PA 17406 Tel +1 (717) 767-6511 Fax +1 (717) 764-0839 LGPM Cover.indd 4 Red Lion Controls Europe Printerweg 10 NL - 3821 AD Amersfoort Tel +31 (0) 334 723 225 Fax +31 (0) 334 893 793 Red Lion Controls India 54, Vishvas Tenement GST Road, New Ranip, Ahmedabad-382480 Gujarat, India Tel +91 987 954 0503 Fax +91 79 275 31 350 Red Lion Controls China Unit 101, XinAn Plaza Building 13, No.99 Tianzhou Road ShangHai, P.R. China 200223 Tel +86 21 6113-3688 Fax +86 21 6113-3683 7/11/2011 2:33:21 PM