Electrical Installation – Communication Wiring to EPO and Optional Equipment
Pin connections J106 (XR Enclosure) and J108 (EPO)
L1
L2
L3
N
N
L1 
L2 
L3 |
J106 Pin Connections:
8Ext. charging control return
7External control of charging
6Q3 active return
5Q3 active
4Battery measurement supply*
3Battery unit quantity*
2Max. battery temperature*
1Battery measurement return*
*Should be used with APC XR Enclosures only
J108 Pin Connections:
1 Normally open EPO
2Normally open EPO return
3Normally closed EPO
4Normally closed EPO return
5+24V SELV supply
6SELV ground
Pin connections J106 (UPS) to J200 (XR Enclosure - option)
Pins 1 through 4 are for battery measurement (only applicable to APC XR Enclosures).
Pins 5 & 6 are for external maintenance bypass Q3. When Q3 is closed, signals are fed back to the UPS controller.
Pins 7 & 8 are for external charge control. When 7 & 8 are closed, the UPS charges batteries with a
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