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DMC-3425 Appendices• 171
Appendices
Electrical Specifications
Servo Control
ACMD Amplifier Command: +/-10 Volts analog signal. Resolution 16-bit DAC or .0003
Volts. 3 mA maximum
A+,A-,B+,B-,IDX+,IDX- Encoder TTL compatible, but can accept up to +/-12 Volts.
Quadrature phase on CHA,CHB. Can accept single-ended
(A+,B+ only) or differential (A+,A-,B+,B-). Maximum A,B
edge rate: 12MHz. Minimum IDX pulse width: 80 nsec.
Input/Output
Uncommitted Inputs, Limits, Home,
Abort Inputs:
TTL Can accept up to +12V signal.
OUT[1] thru OUT[3] Outputs: TTL.
Power Requirements
+5V 400 mA
+12V 40 mA
-12V 40mA
Performance Specifications
Minimum Servo Loop Update Time:
DMC-3415
250 μsec / 125usec with fast firmware
(fast firmware only works on SLAVE controller)
DMC-3425
375 μsec / 250 usec with fast firmware
(fast firmware only works on SLAVE controller)
Position Accuracy: +/-1 quadrature count
Velocity Accuracy: