Emerson Liebert NX 480V - Emergency Power off (EPO); Figure 20 Connecting EPO Push Button

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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