Appendices
Electrical Specifications
Servo Control
MCMn Amplifier Command: +/-10 volt analog signal. Resolution 16-bit DAC or
0.0003 volts. 3 mA maximum.
Output impedance – 500Ω
MA+,MA-,MB+,MB-,MI+,MI- 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: 22 MHz. Minimum IDX pulse
width: 45 nsec.
Stepper Control
STPn (Step) TTL (0-5 volts) level at 50% duty cycle. 6,000,000
pulses/sec maximum frequency
DIRn (Direction) TTL (0-5 volts)
Input / Output
Limit Switch Inputs, Home Inputs.
DI1 thru DI8 Uncommitted Inputs and
Abort Input
DI9 thru DI16 Uncommitted Inputs
(DMC-4050 through DMC-4080 only)
2.2K ohm in series with opto-isolator. Active high or low
requires at least 1mA to activate. Once activated, the
input requires the current to go below 0.5ma. All Limit
Switch and Home inputs use one common voltage
(LSCOM) which can accept up to 24 volts. Voltages
above 24 volts require an additional resistor.
≥ 1 mA = ON; ≤ 0.5 mA = OFF
AI1 thru AI8 Analog Inputs: Standard configuration is +/-10 volts. 12-Bit Analog-to-
Digital converter. 16-bit optional.
DO1 thru DO8 Outputs: High power Opto-Isolated – 500mA souring
DO9 thru DO16 Outputs:
(DMC-4050 through DMC-4080 only)
High power Opto-Isolated – 500mA sourcing
Appendices • 197 DMC-40x0 User Manual
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