4.2.5 REPO Port
The UPS has an EPO function that operates by an EPO button on the touch screen of the UPS or by a remote contact
provided by the user. The EPO button has a protective cover.
J5 is the REPO port. The port is shown in Figure 4.8 below and described in Table 4.8 below.
Figure 4.8 R EPO port J5
Pin N am e Meanings Pin N am e Meanings
1 EPO-NC EPO activated when opened to Pin 2 3 + 12 V EPO activated when shorted to Pin 4
2 + 12 V EPO activated when opened to Pin 1 4 EPO-NO EPO activated when shorted to Pin 3
Table 4.8 D escrip tion o f RE PO port J5
EPO is triggered when pins 3 and 4 of J5 are shorted or pins 2 and 1 of J5 are opened.
If an external EPO facility is required, pins 1 and 2 or 3 and 4 of J5 are reserved for this function. The external EPO facility is
also connected to the normally open or normally closed remote EPO switch between these two terminals using shielded cable.
If this function is not required, pins 3 and 4 of J5 must be opened and pins 1 and 2 of J5 must be shorted.
N O T E: The U P S EPO action shu ts dow n the rectifier, inverter, an d static bypass, but it does n ot
internally disconnect the m ains input p ow er. To disconn ect all pow er to the UP S, open the external
pow er sw itch, bypass input sw itch, output sw itch, an d BC B after EP O is activated.
N O T E: Shielded tw isted pair cab les are used for REP O cables
4 Electrical Installation
43
Vertiv™ Liebert® APM Plus User Manual
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