PMAC Product Guide Putting E87 ON ties the digital GND reference signal to the analog AGND reference signal, defeating the isolation between the circuits. Putting E85 ON ties the digital +12V supply line to the analog A+15V supply line. Putting E88 ON ties the digital –12V supply line to the analog A-15V supply line. Putting these jumpers on permits the bus +/-12V supply to power PMAC’s analog circuits. E89-E90: Input Flag Supply Control If E90 connects pins 1 and 2 and E89 is ON, the input flags (+LIMn, -LIMn, HMFLn, and FAULTn) are supplied from the analog A+15V supply, which can be isolated from the digital circuitry.
If E90 connects pins 1 and 2 and E89 is OFF, the input flags are supplied from a separate A+V supply brought in on pin 9 of the J8 JEQU connector. This supply can be in the +12V to +24V range, and can be kept isolated from both the analog and digital circuits. If E90 connects pins 2 and 3, the input flags are supplied from the digital +12V supply, and isolation from the digital circuitry is defeated. Clock Configuration Jumpers E98: DAC/ADC Clock Frequency Control Default Configuration E98 1-2 This jumper is related to an advanced feature and should not be changed from default. E29-E33:
Phase Clock Frequency Control These jumpers are related to an advanced feature and should not be changed from default. E48: Option CPU Clock Frequency Control Default Configuration E48 OFF This jumper is related to an advanced feature and should not be changed from default. E3-E6: Servo Clock Frequency Control These jumpers are related to an advanced feature and should not be changed from default. 12 PMAC Jumper Configuration Default Configuration E89 E90 ON 1-2 Default Configuration E29 E30 E31 E32 E33 OFF OFF ON OFF OFF Default Configuration E3 E4 E5 E6 OFF OFF ON ON