APC SUVT10KF2B4S Datasheet download pdf (Page 42)

Electrical Installation – Communication Wiring to EPO and Optional Equipment

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

Pin connections J108 (for EPO wiring options)

EPO switch wiring. The UPS must be connected to either a dry contact or a 24V

Emergency

Power Off (EPO) switch.

Connect the EPO cable, using one of the following 4 wiring configurations.

J108

EPO circuit

J108

1: Dry Contracts

Normally Open

2: +24V Normally Open

3: Dry Contacts

Normally Closed

4: +24V Normally

Closed

EPO circuit

EPO is activated when a

connection from pin 3 to pin 5

is opened

EPO is activated when pin 1 is

connected to pins 3, and 5

EPO is activated when an

isolated SELV 24V

voltage

is supplied on pin 1 with

reference to pin 2.

EPO is activated when a SELV

24V

voltage removed from

pin 3 with reference to pin 5

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APC SUVT10KF2B4S Datasheet Page 42