Emerson DSM314 - 4.2 Rack;Slot Configuration

User Manual Chapter 3
GFK-1742F Jan 2020
Installing and Wiring the DSM314 83
I/O Specifications
The specifications and simplified schematics for the module’s I/O circuits are provided on
the following pages. The I/O circuits described are as follows:
•
Differential/Single Ended 5v Inputs (IN1, IN2, IN3)
•
Single Ended 5v Sink Input (IN4)
•
Optically Isolated 24v Source/Sink Inputs (IN9, IN10, IN11, INCOM)
•
Single Ended 5v Inputs/Outputs (IO5, IO6, IO7, IO8)
•
5v Differential Outputs (OUT2, OUT3)
•
24v DC Optically Isolated Output (OUT1)
•
Optically Isolated Enable Relay Output (OUT4)
•
Differential +/- 10v Analog Inputs (AIN1, AIN2)
•
Single Ended +/- 10v Analog Outputs (AOUT1, ACOM)
•
+5v Power (P5V, 0V)
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 (+)
Strobe Input 1 (-)
Encoder Chan. A (+)
Encoder Chan. A (-)
IN1P_X
1
1
1
IN1M_X
19
19
9
IN2
Strobe Input 2 (+)
Strobe Input 2 (-)
Encoder Chan. B (+) Encoder
Chan. B (-)
IN2P_X
2
2
2
IN2M_X
20
20
10
IN3
Ser Encoder Data (+)
Ser Encoder Data (-)
Encoder Marker (+) Encoder
Marker (-)
IN3P_X
3
3
N/C
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