DMC-1000 Appendices • 145
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: 8
MHz. Minimum IDX pulse width: 120 nsec.
Stepper Control
Pulse TTL (0-5 Volts) level at 50% duty cycle. 2,000,000 pulses/sec
maximum frequency
Direction TTL (0-5 Volts)
Input/Output
Uncommitted Inputs, Limits, Home
Abort Inputs:
2.2K ohm in series with optoisolator. Requires at least 1 mA for on. Can
accept up to 28 Volts without additional series resistor. Above 28 Volts
requires additional resistor.
AN[1] thru AN[7] Analog Inputs: Standard configuration is +/-10 Volt. 12-Bit Analog-to-Digital converter.
OUT[1] thru OUT[8] Outputs: TTL.
OUT[9] through OUT [16] Outputs TTL (only available on controllers with 4 or more axes)
IN[17] through IN[24] Inputs TTL (only available on controllers with 4 or more axes)
Power
+5V 750 mA
+12V 40 mA
-12V 40mA
Performance Specifications
Minimum Servo Loop Update Time:
DMC-1010 -- 250 μsec
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