User`s manual

Installation and Wiring
GFK-1742A Chapter 3 Installing and Wiring the DSM314 3-37
3
Differential / Single Ended 5v Inputs
Circuit
Identifier
Digital Servo
Axis 1, 2
Circuit Function
Analog Servo Axis 1-4
and Aux Axis 2-4
Circuit Function
Signal Name
(X = A, B, C, or
D Connector)
Faceplate
Pin
Auxiliary
Terminal
Board
Servo
Terminal
Board
IN1 Strobe Input 1 (+) Encoder Chan. A (+) IN1P_X 1 1 1
Strobe Input 1 (-) Encoder Chan. A (-) IN1M_X 19 19 9
IN2 Strobe Input 2 (+) Encoder Chan. B (+) IN2P_X 2 2 2
Strobe Input 2 (-) Encoder Chan. B (-) IN2M_X 20 20 10
IN3 Ser Encoder Data (+) Encoder Marker (+) IN3P_X 3 3 N/C
Ser Encoder Data (-) Encoder Marker (-) IN3M_X 21 21 N/C
I/O Type: Differential / Single Ended 5v Inputs
Circuit Type: Source Input (9.4K ohm pull-down to 0v)
Input Impedance:
(+) or (-) Input
9.4K ohms common mode to 0v
18.8K ohms differential
Maximum Input Voltage: +/- 15 v common mode
+/- 20 v differential
Logic 0 Threshold: +0.8 v max single ended
+0.4 v max differential
Logic 1 Threshold : +2.0 v min single ended
+1.5 v min differential
Input Filtering: 0.5 microsecond typical
Quadrature Encoder Frequency: 250 khz/channel (1 mhz count rate) max with differential inputs
150 khz/channel (600 khz count rate) max with single ended inputs
Quadrature Tolerance: 90 degrees +/- 45 degrees
Strobe Response: Minimum Pulse Width: 3 microseconds
Position Capture Accuracy: +/- 2 counts with an additional 10
microseconds of variance
Notes: Use (+) Input for single ended mode and leave (-) input floating.
Use faceplate 0v pins for common mode reference or single ended
signal return. Inputs can be driven by 5v TTL or CMOS logic.
IN +
IN -
LINE
RCVR
0V +0.75V
4700
4700
47004700