H8PS

Cam Positioner H8PS • Easy replacement of mechanical cam switches. • Easy setting with single-function keys (each key has one function). • Accepts 330-rpm input for compatibility with a variety of automatic units for operation timing control. • Equipped with useful functions for switching encoder rotation direction, designating the encoder origin, etc. • Bright LCD backlight display. • Up to 16-cam control possible using parallel input adapter and two H8PSs. • Conforms to EMC standards (EN61326). • Approved by UL and CSA. • Six-language instruction manual provided. Counters Cam Positioner Economical Electronic Cam Switch with High-performance Eight-cam Control Rotary Encoder • This encoder works in combination with the H8PS Cam Positioner to detect the operation timing of various automatic machines at high precision. • The E6CP is a low-cost money-saving encoder. • The E6F is compatible with high shaft-tolerance applications as well as environments subjected to water and oil. Model Number Structure I Model Number Legend H8PS-8B @ @ 1 2 3 1. Front panel language B: English 2. Mounting method None: Flush mounting F: Surface/Track mounting 3. Output configuration None: NPN transistor output F: PNP transistor output Cam Positioner H8PS C-155 Ordering Information I Cam Positioner Mounting method Flush Surface/Track Output configuration NPN transistor output PNP transistor output NPN transistor output PNP transistor output H8PS-8B H8PS-8BP H8PS-8BF H8PS-8BFP Model I Rotary Encoder Type Economy Rigid Cable length 2m E6CP-AG5C-C E6F-AG5C-C Model I Accessories (Order Separately) Item Protective Cover Shaft Coupling for E6CP Shaft Coupling for E6F Extension Cable (see note) Parallel Input Adapter Mounting Base DIN Track Spacer End Plate --Axis dia.: 6 mm Axis dia.: 10 mm 5 m (same for E6CP and E6F) --For H8PS-8BF@ Length: 50 cm Length: 100 cm ----Specification Y92A-96B E69-C06B E69-C10B E69-DF5 Y92C-30 Y92F-91 PFP-50N PFP-100N(2) PFP-S PFP-M Model Note: Please inquire about the availability of non-standard lengths. C-156 Cam Positioner H8PS Specifications I Ratings/Characteristics Cam Positioner Mounting method Rated supply voltage Operating voltage range Power consumption Setting unit Inputs H8PS-8B(P): Flush mounting H8PS-8PF(P): Surface/Track mounting 24 VDC 85% to 110% of rated voltage Approx. 4 W 1° Increments (cam control precision, however, is within 2°: 256° rotational increments) Up to 2 output signals can be set per cam Encoder input: connections to a special absolute encoder (OMRON E6CP/E6F) Response rotation speed: Run mode: 330 min−1 max. Switchable between high speed (60 to 330 min−1) and low speed (60 min−1 max.) Test mode: 60 min−1 max. Includes malfunction data detection Open-collector transistor output NPN: H8PS-8B(F) PNP: H8PS-8B(F)P Cam outputs: 8 lines (Output No.1 to 8) 30 VDC max., 100 mA max. (residual voltage: 2 V max.) RUN OUT: Turns ON in Run and Test modes, OFF in Program mode in case of error 30 VDC max., 100 mA max. (residual voltage: 2 V max.) TACHOMETER:60-ppr signal output for rpm meter 30 VDC max., 30 mA max. (residual voltage: 0.5 V max. for NPN models, 2 V max. for PNP models) 100 m max. Run mode: 0.5 ms max. under high speed designation 2.5 ms max. under low speed designation Test mode: 5 ms max. 10 years (at 25°C) 100 MΩ min. (at 500 VDC) between current-carrying terminal and exposed, non-current-carrying metal part 1,000 VAC, 50/60 Hz for 1 min between current-carrying terminal and exposed, non-current-carrying metal part 1 kV between power terminals, 1.5 kV between current-carrying terminal and non-current-carrying metal part ±480 V between power terminals for square-wave noise from noise simulator (pulse width: 100 ns/1 µs, 1 ns at startup) Destruction: 15 kV Malfunction: 8 kV Destruction: 10 to 55 Hz 0.75-mm single amplitude each in X, Y, and Z directions Malfunction: 10 to 55 Hz 0.5-mm single amplitude each in X, Y, and Z directions Destruction: 300 m/s2 Malfunction: 200 m/s2 LCD with back light EN61326 EN55011 Group 1 class A EN55011 Group 1 class A EN61326 EN61000-4-2: 4 kV contact discharge (level 2) 8 kV air discharge (level 3) Immunity RF-interference: EN61000-4-3: 10 V/m (Amplitude-modulated, 80 MHz to 1 GHz) (level 3) 10 V/m (Pulse-modulated, 900 MHz ±5 MHz) (level 3) Immunity Conducted Disturbance: EN61000-4-6: 10 V (0.15 to 80 MHz) (according to EN61000-6-2) Immunity Burst: EN61000-4-4: 2 kV power-line (level 3); 2 kV I/O signal-line (level 4) Immunity Surge: EN61000-4-5: 1 kV line to lines (power and output lines) (level 2); 2 kV line to ground (power and output lines) (level 3) UL508, CSA C22.2 No.14 Operating: -10°C to 55°C (with no icing) Storage: -25°C to 65°C (with no icing) Operating: 35% to 85% Approx. 300 g (EMI) Emission Enclosure: Emission AC mains: (EMS) Immunity ESD: Counters Outputs Encoder cable extension distance Output response time Life expectancy of memory back-up battery Insulation resistance Dielectric strength Impulse withstand voltage Noise immunity Static immunity Vibration resistance Shock resistance Display method EMC Approved standards Ambient temperature Ambient humidity Weight Cam Positioner H8PS C-157 Rotary Encoder Item Rated supply voltage Current consumption Resolution (per revolution) Output code Output method Output capacity 70 mA max. 256 (8-bit) Grey binary Open collector output Applied voltage: 28 VDC max. Sink current: 16 mA max. Residual voltage: 0.4 V max. (sink current at 16 mA) Negative logic (H = 0, L = 1) Within ±1° Clockwise (viewing from the shaft) for output code increment 1 µs max. (control output voltage: 16 V; load resis- 1 µs max. (control output voltage: 5 V; load resistance: 1 kΩ; output cord: 2 m max.) tance: 470 Ω; output cord: 2 m max.) 2 µs max. (control output voltage: 5 V; load resistance: 1 kΩ; output cord: 2 m max.) 0.98 × 10-3 N·m max. 1.0 × 10 kg·m max. -6 2 E6CP-AG5C-C 12 VDC -10% to 24 VDC +15%, ripple (p-p) 5% max. F6F-AG5C-C Applied voltage: 30 VDC max. Sink current: 35 mA max. Residual voltage: 0.4 V max. (sink current at 35 mA) Logic Precision Rotation direction Rise and fall times of output Startup torque Moment of inertia Shaft-load tolerance Max. rpm threshold Ambient temperature Ambient humidity Degree of protection Insulation resistance Dielectric strength Vibration resistance Shock resistance Weight Radial Thrust 9.8 × 10-3 N·m max. 1.5 × 10-6 kg·m2 max. 98 N 29.4 N 5,000 min−1 Operating: -10°C to 60°C (with no icing) Storage: -25°C to 80°C (with no icing) IEC standard IP52F 29.4 N 19.6 N 1,000 min−1 Operating: -10°C to 55°C (with no icing) Storage: -25°C to 85°C (with no icing) 35% to 85% (with no condensation) IEC standard IP50 50 MΩ max. (at 500 VDC) between charged parts 10 MΩ max. (at 500 VDC) between charged parts and the case and the case 500 VAC, 50/60 Hz for 1 min between charged parts and the case Malfunction: 10 to 55 Hz, 1.5-mm double amplitude each in X, Y, and Z directions for 2 hrs Malfunction: 1,000 m/s2 for 3 times each in X, Y, and Z directions Approx. 200 g (with 2-m cord) Approx. 500 g (with 2-m cord) C-158 Cam Positioner H8PS Connections I Terminal Arrangement H8PS-8B H8PS-8BF Output Circuit *When using an inductive load, connect a reverse surge-absorbing diode. H8PS-8BP H8PS-8BFP Output Circuit (Rated voltage: 24 VDC) Item Output method Dielectric strength Rated current Residual voltage Leak current NPN open collector 30 V 100 mA 2 V max. 100 µA max. H8PS-8B/-8BF RUN OUT Output 1 to 8 TACHOMETER H8PS-8BP/-8BFP RUN OUT Output 1 to 8 PNP open collector 30 V TACHOMETER 30 mA 0.5 V max 5 µA max. 100 mA 2 V max. 100 µA max. 30 mA Note: Internal circuit damage can result from a short circuit in the load. Cam Positioner H8PS C-159 Counters Multiple outputs (OUTPUT 1 to 8) can be connected to operate a load as shown below. H8PS-8B/8BF Load H8PS-8BP/8BFP Timing Chart Output 1 ON OFF ON OFF ON OFF ON OFF Output 2 Output 3 Load I Connection Examples TACHOMETER Connection Since the rotational output consists of 60 pulses per revolution, select an appropriate rpm meter. H8PS-8B, -8BF Tachometer output (9) H7ER-N 1 2 3 4 −(13) RUN OUT Connection The output is ON during run and test modes and can be used as a status signal by connecting to the Input Unit of a Programmable Controller (SYSMAC) or similar device. C-160 Cam Positioner H8PS Nomenclature FAST: 60 to 330 min −1 SLOW: 60 min or less −1 Cam Positioner H8PS C-161 Counters Dimensions Note: 1. All units are in millimeters unless otherwise indicated. 2. @ denotes square dimensions. I Cam Positioner Flush Mounting Models H8PS-8B H8PS-8BP Flush Mount CHECK OUT No. STEP 11 dia. Two mounting screws M4 × 12 sems Surface-mounting/Track-mounting Models H8PS-8BF H8PS-8BFP Surface Mount CHECK OUT No. STEP 17.8 C-162 Cam Positioner H8PS Track Mount H8PS-8BF/-8BFP with Y92F-91 Y92-F91 (order separately) mounting base I Accessories (Order Separately) Protective Cover Y92A-96B Track Mounting Base Y92F-91 Adapter for Parallel Operation This Adapter enables two H8PS Cam Positioners to share a signal from an Encoder. Use the cable marked with triangle mark when connecting only one H8PS Cam Positioner to the adapter. Panel Surface Mounting Surface M4 screw (included) Two, M4 tap holes Panel Back Mounting Back M4 nut (included) M4 screw (included) Two, 4.3 holes Cam Positioner H8PS C-163 Counters I Rotary Encoder E6CP-AG5C-C Note: 1. Round, vinyl-insulated cord. External dia.: 6 mm; 10/7/0.18-mm dia.; standard: 2 m. 2. Connector to H8PS (Hirose Electric: RP13A-12PD-13SC) With Mounting Bracket Mounting Bracket (included) E6F-AG5C-C 16.9 dia. Note: 1. Round, vinyl-insulated and shielded cord (oil resistant). External dia.: 6 mm; 12/7/0.18-mm dia.; standard: 2 m. 2. Connector to H8PS (Hirose Electric: RP13A-12PD-13SC) C-164 Cam Positioner H8PS With Mounting Bracket Mounting Bracket (included) I Accessories for Rotary Encoder Shaft Coupling (for E6CP) E69-C06B Shaft Coupling (for E6F) E69-C10B Note: The material is polyacetal resin with glass fibers (GC-25). Extension Cable E69-DF5 Note 1 Note 2 Note: 1. Connector for H8PS (E6F-AB3C-C, E6F-AG5C-C) 2. Round, vinyl-insulated and shielded cord (oil resistant). External dia.: 6 mm; 12/7/0.18-mm dia.; 5 m. 3. Connected to H8PS. 4. The maximum cable length for connection to the H8PS is 100 m (including the cable provided). Cam Positioner H8PS C-165 Counters Precautions I Cam Positioner Error Displays and Cancelling When an error occurs, perform the following cancellation operation. (When the following errors occur, all outputs turn OFF except for the TACHOMETER output.) Display Set origin data error Memory error, when settings have been modified Description Cancellation method Reset the origin in the Programming Mode and return to the previous mode. Switch to the Programming Mode and confirm all settings. After correcting the settings, return to the previous mode. 1. The back-up battery has expired. 2. The contents of memory have changed due to noise or another factor. Encoder input data error 1. The Encoder is malfunctioning or a connector is disconnected. 2. The Encoder rotation speed exceeds the response limit. 3. The Encoder output data became scrambled because of noise. 4. A line to the Encoder is cut. After turning on the power, it takes approximately two seconds until normal operation, When the ON angle and OFF angle are the same value, no output will occur. Switch to the Programming Mode and check the following items. Return to the previous mode after corrections. 1. 2. 3. 4. Encoder abnormality Faulty Encoder connector contacts Encoder rotation speed and response speed settings Noise and surge protection The external finish of the main unit is prone to organic solvents (thinner, benzene, etc.), strong alkali (ammonia, sodium hydroxide), and strong acid. Please avoid contact with theses chemicals. Store the devices between -25°C and 65°C. For storage below −10°C, power the unit up after letting it stand at room temperature for three hours. To perform dielectric testing, impulse-voltage testing, and insulationresistance measuring between the electrical circuitry and the uncharged metal parts when the unit is mounted in a control panel, first disconnect the wiring of the unit from the circuitry. (This prevents degradation of damage of internal circuitry in the event that part of the control-panel equipment has faulty voltage resistance or faulty insulation. The test voltage might go to the power-supply terminals of the main unit.) The Encoder consists of precision parts. Exercise care in handling, and make sure no excessive shock or pressure is applied to the Encoder. Especially make sure that the Encoder’s rotating shaft is not subjected to excessive force. The connections for the main unit connectors should have no undue stress applied. Wire cables accordingly. Handling Turn the operation power on or off instantaneously via a contact such as a switch or relay. Avoid operation in the following environments: 1. 2. 3. 4. 5. 6. 7. An ambient temperature below -10°C or above 55°C. Very dusty locations. Very humid locations. Locations where corrosive gasses are generated. Locations with heavy vibrations or shock. Locations prone to water or oil. Locations with direct sunlight. For operation in environments with excessive electrical noise generation, separate the Encoder cords and the main unit of the H8PS from high-power cables that have noise or noise-generating sources. Angle Data Table The H8PS uses an absolute Encoder with 256 divisions per revolution. To assist with programming, displays and settings may be done by conversion to 360 degrees by a switch on the front panel. The following table shows the conversions. How to Use the Table 0 0° 1 1° 256 display (Encoder output data) 360 display (360° converted data) C-166 Cam Positioner H8PS 0 0° 16 23° 32 45° . . . 208 293° 224 315° 240 338° 1 1° 17 24° 33 46° . . . 209 294° 225 316° 241 339° 2 3° 18 25° 34 48° . . . 210 295° 226 318° 242 340° 3 4° 19 27° 35 49° . . . 211 297° 227 319° 243 342° 4 6° 20 28° 36 51° . . . 212 298° 228 321° 244 343° 5 7° 21 30° 37 52° . . . 213 300° 229 322° 245 345° 6 8° 22 31° 38 53° . . . 214 301° 230 323° 246 346° 7 10° 23 32° 39 55° . . . 215 302° 231 325° 247 347° 8 11° 24 34° 40 56° . . . 216 304° 232 326° 248 349° 9 13° 25 35° 41 58° . . . 217 305° 233 328° 249 350° 10 14° 26 37° 42 59° . . . 218 307° 234 329° 250 352° 11 15° 27 38° 43 60° . . . 219 308° 235 330° 251 353° 12 17° 28 39° 44 62° . . . 220 309° 236 332° 252 354° 13 18° 29 41° 45 63° . . . 221 311° 237 333° 253 356° 14 20° 30 42° 46 65° . . . 222 312° 238 335° 254 357° 15 21° 31 44° 47 66° Counters . . . 223 314° 239 336° 255 359° !WARNING 1. The H8PS has a built-in lithium battery. Be sure to dispose of the old H8PS properly, as lithium batteries are likely to explode if incinerated. 2. Electrical shock hazard Never touch the input terminals of any H8PS Cam Positioner when power is being applied to the Cam Positioner. I Rotary Encoder Make sure that the E6CP Encoder is not subjected to oil or water. If oil or water enters the interior, malfunctions may occur. For use in environments subject to water drops or oil, use the E6F. Make sure that there is no foreign matter in the Connector before connecting the Encoder. Rotary Encoders consist of precision parts. Their operation may be damaged if the Encoder is dropped. Be very careful with handling. When joining to a chain, timing belt, or gears, interpose a coupling and bearings before the Encoder. Chain sprocket Bearing Coupling Rotary Encoder If you insert a coupling on the shaft, do not hammer on the coupling or otherwise subject it to shock. Mounting Procedure 1. Place a coupling on the shaft. Do not screw the coupling and shaft tight. 2. Fasten the Encoder. Do not insert the shaft to the coupling more than the length shown below. Shaft coupling E69-C06B E69-C10B 5.5 mm 7.1 mm Length of insertion 3. Fasten the coupling. Shaft coupling E69-C06B Large mounting deviations (eccentric centers or angles) may cause an excessive load on the Encoder’s shaft, resulting in damage or drastically reduced life expectancy. Take care not to place excessive loads on the shaft. Keep the tightening torque around 0.49 N·m when fastening the rotary Encoder. Do not pull the wiring at a force greater than 29.4 N when the main unit is fastened and wired. Main unit Tightening torque 0.25 N·m 0.44 N·m E69-C10B 4. Connect power supply and input/output lines. Make sure you turn off the power supply when wiring. 5. Turn on the power and check outputs. 29.4 N max. Fastening plate Cord Cam Positioner H8PS C-167 Operating Procedures I Functions Classifications Encoder rotational direction switch Encoder origin designation Angle display switch Rotation display monitor Teaching Monitor contents Functions Encoder data revolutions can be set to clockwise or counterclockwise. The process display angle can be set to the origin as 0° at the press of a button. The unit can convert the display of absolute encoder values 256 divisions/revolution to 360°/revolution. Graphic display of encoder rotational angle position. The unit can set the ON/OFF angle from actual operation of the machine. Process value display (character height: 11 mm), output display, settings display, set cam number display, mode display, revolution display, operation step display, and error message display. I Operation The H8PS Cam Positioner receives angle signal inputs from the Encoder, and outputs the preset ON/OFF angles as control signals (cams number 1 to 8). Program Example Control output (cam number) ON angle 1 2 . . . 8 45° 0° . . . 135° 180° 90° . . . 225° STEP 1 OFF angle --180° . . . 315° ON angle --270° . . . 45° STEP 2 OFF angle Operation Example 315 Note: 1. When the setting angles for STEP 1 and STEP 2 of same output are overlapped, the operation is as follows: 2. The operating output RUN OUT" does not turn ON during programming. The operation output turns ON with the timing shown in the diagram, but it remains OFF when an error occurs. Thus, you can use the output as a timing signal during operation, including test runs. C-168 Cam Positioner H8PS I Initializing Set the rotation speed of the Encoder. FAST: 60 to 330 min−1 SLOW: 60 min−1 max. I Actual Setting Example 1. Setting the Origin Any mode can be used to set the origin except for the Run Mode. Ex. Set the process value of 180° to 0°. a. Set the mode switch to PRGM. b. Set the programming mode switch to TCH. Mode Programming Mode d. Press the ORIGIN Key. PRGM Initial Display c. Adjust the machine (Encoder) to the position of the desired origin (180° in the example). Cam Positioner H8PS C-169 Counters 2. Setting of Modifying the ON or OFF Angle Set or modify with the Angle Keys. Ex. Set cam number 2 step 2 to turn ON at 30° and turn OFF at 41°. a. Set the mode switch to PRGM. b. Set the programming mode switch to MAN. Mode Programming Mode 3. Setting or Modifying the ON/OFF Angle Set or Modify by Teaching Ex. Set the ON/OFF angle by teaching step 1 of cam number 3. a. Set the mode switch to PRGM. b. Set the programming mode switch to TCH. Mode Programming Mode PRGM PRGM Initial Display Initial Display c. Press the OUT NO. Key and select “3” for cam number 3. c. Press the OUT NO. Key and select “2” for cam number 2. Keep pressing the key for automatic increment or decrement. d. Press the STEP Key and select “STP2” for step 2. d. Press the STEP Key and select “STP1” for step 1. e. Press the ON/OFF Key to set the ON angle. e. Press the ON/OFF Key to set the ON angle. f. Press the + or - Keys to set to “30.” g. Press the WRITE Key. f. Adjust the machine (Encoder) and set it at the output ON position (125° in the example). g. Press the WRITE Key. h. Press the ON/OFF Key to set the OFF angle. h. Press the ON/OFF Key to set the OFF angle. i. Press the + or - Keys to set to “41.” j. Press the WRITE Key. i. Adjust the machine (Encoder) and set it at the output OFF position (312° in the example). j. Press the WRITE Key. Note: Pressing the + or - Key continually will automatically increment or decrement the value. Pressing the other key during automatic increment or decrement will increase the speed. Note: If the machine (Encoder) is operated at a speed greater than permitted, an “E2” error will occur. ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. Cat. No. M041-E1-04 In the interest of product improvement, specifications are subject to change without notice. C-170 Cam Positioner H8PS Glossary Addition-type (Up/Incrementing) counter A counter having an add input and thus capable of counting in an ascending order. Add input Electrical life expectancy The life expectancy of a counter when the control output is operated to switch a specified voltage/current load connected to the control output. External reset To reset the counter by a required signal applied from an external source to the reset input signal terminals of the counter. Holding output The control output of the counter without a self-resetting function. The output is continuously held as long as the counter is not reset by the power, external, manual, or electromagnetic reset. Humidity The ambient humidity at which a device can be used for continuous operation. Insulation resistance The resistance offered by an insulating material to the flow of current resulting from a DC voltage. Life expectancy (mechanical) The life expectancy of a counter when the control output of the counter is operated without a load. Manual reset To mechanically reset the counter by manual means. Maximum counting speed The maximum counting speed at which the display or output section of the counter operates accurately without miscounting. The maximum counting speed is expressed in units of counts per second (cps). Memory protective function during power failure The function by which the number of counts at the time of a power failure is memorized until power is again applied to the counter. Operating mode Control output patterns or display patterns that appear when counted up to the value set by the preset counter. N Mode Set value Count value display Control output: Held Control output C Mode Set value Count value display Control output: one shot Control output Operating voltage range The allowable fluctuation range of the voltage required to operate a device (e.g. control and signal voltage). CPU Memory One-shot output A counter control output of fixed duration which can be reset by a self-reset. Count value display: Instantaneous reset Count value display: Held Count value Ambient temperature (operating) The ambient temperature at which a device can be used in the continuously operated state. Ambient temperature (storage) The ambient temperature at which a device without power applied, may be stored safely. Automatic reset To automatically return the counter to the „0“ state after the lapse of a given time. Counting capacity The maximum value up to which the counter can count. The counting capacity is usually expressed in decimal digits. Count-up The point in time or the state in which the output section of the counter operates when the number of counts reaches the preset value. Dielectric strength The maximum voltage a dielectric can withstand without being damaged. Electromagnetic reset To electromagnetically reset the counter by applying a reset signal. Electromagnetic counter A counter which performs counting by energizing or de-energizing the built-in electromagnet. Electronic counter A counter which mainly consists of transistors, ICs, micro-computers, etc. C-171 Counters Glossary ON-OFF ratio The ratio of the ON signal time of a given input signal to the OFF signal time of the same input signal. The maximum counting speed of each counter is determined by a counting input signal with an ONOFF ratio of 1:1. Power consumption The maximum wattage used by a device within its operating range at the specified temperature and humidity. Depending on the internal power circuit system of the model, both apparent power and active power are indicated for the AC power supply. Refer to the apparent power when designing a transformer. Preset solid-state counter A counter whose control output operates when it counts up to the set value and which employs a semiconductor circuit for the counting element. Stage Number of preset values that correspond with the number of control outputs. Set 2 Set 1 Count value Control output 1 Control output 2 Subtraction-type (Down/Decrementing) counter A counter with a subtract input and thus capable of counting in descending order. Set value Count value Control input Control output Readout counter A counter in which an output signal is normally generated corresponding to the count value. Reset To restore the counting, display and output sections of the counter, to their initial states. Reversible-type counter A counter with the capability of counting in an ascending or descending order, depending on the up-down inputs. Also called an up-down counter. Control input There are several input modes for addition or subtraction. Count value Totalizing counter A counter which indicates the total value of the counting inputs and is not provided with a control output. Vibration resistance (destruction) The threshold of vibration beyond which an abnormality is expected to occur in the appearance or function of a device. Vibration resistance (malfunction) The threshold of shock beyond which a device can be longer operate properly by satisfying the prescribed ratings. Addition Subtraction Count value Power reset To reset the counter by cutting off the operating supply voltage. Self-reset To reset the counter by a signal generated by internal circuitry. Shock resistance (destruction) The threshold of shock beyond which an abnormality is expected to occur in the appearance or function of a device. Shock resistance (malfunction) The threshold of shock beyond which a device can be longer operate properly according to prescribed ratings C-172 Glossary Counting Function Refer to the following timing charts for the input modes of the incremental, decrementing, and up/down (or reversible-type) Counters. Up/Down Up/Down A Control Input Up/Down D Control Input Count Count Up/Down B Individual Input Up/Down E Individual Input Count Count Up/Down C Phase-difference Input Up/Down F Phase-difference Input Count Count C-173 Counters