Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 155)

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11278-I
Section 4B
Connecting the 3-axis Servo Module
4B-9
CN5, CN6, and CN7 for Absolute and Incremental Encoder Connectors
The digital servo module receives feedback from the feedback devices
(absolute or incremental encoders) of the servo motors or spindle through
connectors CN5, CN6, and CN7. Figure 4B.7 shows an end view of
connectors CN5, CN6, and CN7 and lists the pin assignments of this
connector when it is used with absolute encoders.
Figure 4B.7
Absolute Encoder Connections and Pin Assignments of Connectors
CN5, CN6, CN7, 20 pin female, Honda MR-20RFD2
Pin. No Signal Description True
Level
Signal Destination
1 GND Encoder Power Return Feedback Device
2 GND Encoder Power Return Feedback Device
3 ENC_5V Switched +5V Encoder Power
Supply
Feedback Device
4 ENC_5V +5V Encoder Power Feedback Device
5 ENC_15V +15V Encoder Power Feedback Device
6 ENC_15V +15V Encoder Power Feedback Device
7 BAT_+ Battery Power Supply Feedback Device
8-11 N.C.
12 Reset Used for Reset Operation Only Feedback Device
13 N.C.
14 PZ Phase_Z, 1 pulse per rev High Servo Module
15 /PZ Diff. Signal Low Servo Module
16 PA Phase_A, 2-phase pulse High Servo Module
17 /PA Diff. Signal Low Servo Module
18 PB Phase_B, 2-phase pulse High Servo Module
19 /PB Diff. Signal Low Servo Module
20 Shield Chassis Ground Servo Module
ATTENTION: Reversing the polarity of the absolute encoder
battery power supply can destroy some elements of the absolute
encoder.