GS-DC200S

GS-DC200 Family STEPPER MOTOR CONTROL AND DRIVE SYSTEM FAMILY DESCRIPTION The GS-DC200 series is a family of single Eurocard boards that contain all the logic necessary to operate a stepper motor, including the instructions decoding, the step timing generation, the storage of the program to be executed. The motor interface can deliver phase current up to 2.5A. The boards can be used as a stand alone complete motion control system or they can be driven by a central host computer. The GS-DC200 family is built around the GS-C200, GS-C200S, GS-D200, GS-D200S modules, (see the relevant data sheet) and it retains all the features of these modules. SELECTION CHART Ordering Number GS-DC200 GS-DC200S GS-DC200SS Controller Sequencer Driver GS-C200+GS-D200 GS-C200+GS-D200S GS-C200S+GS-D200S Instruction Set Commands 25 25 29 Phase Current (A) 2.0 2.5 2.5 ABSOLUTE MAXIMUM RATINGS Symbol Vs Tstg Thop DC Supply Voltage Storage Temperature Range Max Operating Heatsink Temperature (GS-D200/200S) Parameter Value 42 –40 to +105 +85 Unit V °C °C June 1994 1/7 GS-DC200 Family ELECTRICAL CHARACTERISTICS (Tamb = 25°C and VS=24V unless otherwise specified) Symbol Vs Is Vi Vo Iph fc tcpw trpw Parameter DC Supply Voltage Quiescent Supply Current Logic Input Voltage Logic Output Voltage Programmable Phase Current Chopper Frequency Clock Pulse Width Reset Pulse Width (Internal) Low High Low High GS-DC200 GS-DC200S/SS 17 5 500 2 2 Test Conditions Min 12 150 0.8 5 0.8 5 2 2.5 Typ Max 40 Unit V mA V V V V A A kHz µs µs MOTION CHARACTERISTICS Speed Range Speed Resolution Ramp Length Ramp Resolution Positioning Range (GS-DC200/S) Positioning Range (GS-DC200SS) Single Movement Range Positioning Resolution Positioning Repeatibility Program Storage Capability 10 to 10000 steps 10 steps 1 to 999 steps 1 step 0 to 9999999 –8388608 to +8388607 1 to 999999 steps 1 step ± 0 step 119 Bytes COMMUNICATION PORT CHARACTERISTICS SIGNAL LINES BAUD RATE RANGE FORMAT 3(TXD, RXD, GND) 110 to 9600 1 Start Bit 7 Data Bit 2 Stop Bit Odd Parity 2/7 GS-DC200 Family Figure 1. GS-DC200, GS-DC200S and GS-DC200SS Block Diagram Fig. 2 - GS-DC Stepper Motor Driver/Controller Board Dimensions in mm 3/7 GS-DC200 Family Fig. 3 - GS-DC200, GS-DC200S and GS-DC200SS Schematic Diagram 4/7 GS-DC200 Family GS-DC FAMILY BUS CONNECTOR PINS DESCRIPTION The GS-DC family uses a 32 pin (16+16) DIN 41612-VG 95324 male connector and a RS-232 connector. DIN BUS CONNECTOR (J1) Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Not used Not used Not used Not used Not used Not used Phase D output Phase C output Phase B output Phase A output Step enable input Ramp in execution logic output Motor moving +5V output Supply voltage Supply voltage Supply ground Supply ground Row a Signal Not used Not used Power driver enable input Power driver control input Half/Full step select User input 3 User input 2 User output 3 User input 1 User output 2 End-of-travel switch User output 1 Home switch Prog. under execution output Not used Not used Not used Not used Not used Not used Phase D output Phase C output Phase B output Phase A output Stop enable input Ramp in execution logic output Motor moving +5V output Supply voltage Supply voltage Supply ground Supply ground Row c Signal 5/7 GS-DC200 Family RS-232 CONNECTOR (J2 - DB9) Pin 1 Pin 2 Pin 3 Pin 7 Ground Received data input Transmitted data output Ground GS-DC FAMILY HARDWARE AVAILABLE COMMANDS Dip switch configuration selection (0=OFF 1=ON) S1 0 1 0 1 0 1 0 1 S2 0 0 1 1 0 0 1 1 S3 0 0 0 0 1 1 1 1 Address – 1 2 3 4 5 6 7 Protocol Point-to-point Multipoint Multipoint Multipoint Multipoint Multipoint Multipoint Multipoint S4 0 1 0 1 0 1 0 1 S5 0 0 1 1 0 0 1 1 S6 0 0 0 0 1 1 1 1 Baud rate 110 150 300 600 1200 2400 4800 9600 S7 1 0 Disable Enable Checksum S8 1 0 Note: Switch position 9 is not used. Stand alone operation Enable Disable S10 0 1 Rx Not connected Connected RS232 TXD pull-dow n Phase peak current programming 6/7 GS-DC200 Family USER NOTES To correctly operate the GS-DC boards family, it is recommended to read the following data sheets: GS-C200/200S; GS-D200/200S; GS-C200 PROG. Supply Voltage The recommended operating maximum supply voltage must include the ripple voltage on the Vs supply rail and it must not exceed 40V to avoid permanent damage to the board. The boards have internal capacitors connected between the supply and ground pins to assure the electrical stability. These capacitors cannot handle high values of current ripple and they would be permanently damaged if the voltage source impedance is not adequately low. The use of a low ESR, high current ripple, 470µF/50V capacitor located as close as possible to the board is recommended. Suitable units are the Sprague type 672 D or 678 D, the RIFA type PEC 126 or any equivalent unit. Board Protections The GS-DC200 board is protected against occasional or permanent short circuits to the supply voltage of the phase output pins. The GS-DC200S and GS-DC200SS are protected also against short circuits to ground or to another phase output. For the GS-DC200S and GS-DC 200SS the protection is of the latching type i.e. when an overload occurs, the board is automatically disabled. To restart the operations, the supply voltage must be switched off for at least 100 ms. Motor Connection When long wires are needed to connect a remote motor, it is recommended to use twisted pair cables with a proper cross section to minimize DC losses and RFI problems. Phase Current Programming The maximum output current/phase can be programmed by changing the value of the Rx resistor. The factory setting is for maximum current of 1 A GS-DC 200 2 A GS-DC200S / GS-DC200SS. The new value of Rx resistor for a different value of maximum phase current I (A) can be calculated according to the following formulas: GS-D200 I > 1,07 Rx = [ I < 1,07 Rx = [ GS-D200S I > 2,11 Rx = [ I < 2,11 Rx = [ I ] kΩ 3.03– (1,43 I) I ] kΩ 1– (0.993 ∗ I) 10 − (0.33 ∗ I) ] kΩ Rx ≥ 50KΩ (0.473 ∗ I) –1 10 – I ] kΩ Rx ≥ 8.2KΩ (0.993 ∗ I) –1 The maximum programmed current must not exceed 2.0A for the GS-DC200 and 2.5A for the GS-DC200S/GS-DC200SS. Thermal Characteristics The maximum power dissipation occurs on the GS-D200/GS-D200S modules used on the boards. The thermal resistance case-to-ambient of the integral heatsink of these modules is 5°C/W. This means a 50° C temperature increase of the heatsink if the internal power dissipation is 10W. The maximum allowed heatsink temperature is 85°C. Therefore, according to the ambient temperature and/or the internal power dissipation, forced ventilation may be required. Programming To correctly program motion sequences, see the GS-C200/200S and/or GS-C200 PROG data sheets. Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringemen of patents or other rights of third parties which may result from its use. No t license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical component in life support devices or systems without express s written approval of SGS-THOMSON Microelectronics. © 1994 SGS-THOMSON Microelectronics – All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 7/7