Omron OMNUC G Series User Manual page 191

 Terminal Block Wiring Example (common for XW2B-20G4/-20G5, XW2D-20G6)
+24V +24V +24V STOP POT EXT1 EXT3
0V
24 VDC
*1. Absolute encoder backup battery 3.6 to 4.5 V
*2. The XB contacts are used to turn ON/OFF the electromagnetic brake.
*3. Assign BKIR (brake interlock) to CN1-36 pin to use.
Note1. The absolute encoder backup battery is not required when using a Servomotor with an incremental
encoder.
Note2. Connect the absolute encoder backup battery to only one of either the connector terminal block or
absolute encoder backup battery cable.
Note3. Use cable clips with double-sided adhesive tape to secure the absolute encoder backup battery in place.
0V 0V DEC NOT
3-4 Cable and Connector Specifications
*3
BAT OUTM1 /ALM
EXT2 BAT ALM
OUTM1
COM COM COM
*1
X1 XB
24 VDC
FG
*2
3-82
3