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 and Auxiliary
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: 12 MHz. Minimum IDX pulse width: 80
nsec.
Stepper Control
Pulse
TTL (0-5 Volts) level at 50% duty cycle. 3,000,000
pulses/sec maximum frequency
Direction
TTL (0-5 Volts)
Input/Output
Uncommitted Inputs, Limits, Home, Abort Inputs:
2.2K ohm in series with optoisolator. Active high or low requires at
least 2mA to activate. Can accept up to 28 Volts without additional
series resistor. Above 28 Volts requires additional resistor.
AN[1] thru AN[8] Analog Inputs:
Standard configuration is +/-10 Volt. 12-Bit Analog-to-Digital
converter. 16-bit optional.
OUT[1] thru OUT[8] Outputs:
TTL.
178
•
Appendices
DMC-1600