American Power Conversion 208/220

Electrical Installation – Communication Wiring to EPO and Optional Equipment

34 Smart-UPS® VT 10-30 kVA, 208/220 V Site Preparation and Installation Manual 990-1598B

Pin connections J106 (XR Enclosure) and J108 (EPO)

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

pre-defined percentage (0-100%) of the maximum charging power. To be used in generator

applications, or if special codes requires control of charging.

J106 Pin Connections:

8 Ext. charging control return

7 External control of charging

6 Q3 active return

5 Q3 active

4 Battery measurement supply*

3 Battery unit quantity*

2 Max. battery temperature*

1 Battery measurement return*

* Should be used with APC XR

Enclosures only

J108 Pin Connections:

1 Normally open EPO

2 Normally open EPO return

3 Normally closed EPO

4 Normally closed EPO return

5 +24V SELV supply

6 SELV ground