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6 emergency power off (epo), Figure 20 connecting epo push button, Emergency power off (epo) – Emerson Liebert NX 480V User Manual

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4.3.6 Emergency Power Off (EPO)

The external emergency stop facility is identical to that described for the single unit installation—

that an individual emergency stop button is provided for each unit.

Figure 20 Connecting EPO push button

UPS2

UPS1

Monitor Board

Monitor Board

X2:1
X2:2

X2:1
X2:2

Normally

Closed EPO

UPS1

X2:3

X2:4

Monitor Board

UPS2

X2:3
X2:4 Monitor Board

Normally

Open EPO