Electrical Installation – Communication Wiring to EPO and Optional Equipment
Pin connections J108 (for EPO wiring options)
EPO switch wiring. The UPS must be connected to either a dry contact or a 24VDC Emergency Power Off (EPO) switch.
Connect the EPO cable, using one of the following 4 wiring configurations.
1:Dry Contracts Normally Open
J108
1
2
3
4
5
6
EPO circuit
EPO is activated when pin 1 is connected to pins 3, and 5
2: +24V Normally Open
3:Dry Contacts Normally Closed
J108
1EPO circuit
2
3
4
5
6
J108
1
2
3EPO circuit
4
5
6
EPO is activated when an isolated SELV 24VDC voltage is supplied on pin 1 with reference to pin 2.
EPO is activated when a connection from pin 3 to pin 5 is opened
4:+24V Normally Closed
J108
1
2
3
4
5
6
EPO circuit
EPO is activated when a SELV 24VDC voltage removed from pin 3 with reference to pin 5
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