87Magtrol Model DSP7000 Dynamometer Controller C h a p t e r 8 – Optional Equipmentoperation4. Mount one socket head cap screw onto the main board. Use two Philips pan head screwsto secure I/o card 1 into the rear panel of the DSP7000.5. Replace the top cover of the DSP7000 and secure with four Philips pan head screws.Note: To install I/o Card 2 follow the instructions above using the sloton the back panel to the left of I/o Card 1.8.1.2 i/o C arD inTerfaCe1. DAC 1Analog TorqueoutOR user DAC 12. DAC 2Analog SpeedoutOR user DAC 23. AIN1+4. AIN2+5. 5 Volts6. External Alarm7. DI18. DI29. DOUT110. Relay1 NO11. Relay1 NC12. Relay2 NO13. Relay2 NC14. DAC 1 common15. DAC 2 common16. AIN1-17. AIN2-18. 5 Volts Common19. External AlarmCommon20. 5 Volts Common21. 5 Volts Common22. DOUT223. Relay1 Common24. 5 Volts Common25. Relay2 CommonFigure 8–3 I/O Card Interfacepin signalnameinput/outputlevel intended use secondaryusenotes1 DAC 1 Output +/ - 10VDC Analog TorqueoutputUser DAC 1 16 bit D/Aconvertor2 DAC 2 Output +/ - 10VDC Analog SpeedoutputUser DAC 2 16 bit D/Aconvertor3 AIN1+ Input +/ - 10VDC Analoginput for aTachometerAnalog inputfor user16 bit A/Dconvertor4 AIN2+ Input +/ - 10VDC Analog inputfor user--- 16 bit A/Dconvertor