Emerson 10-30kVA Manuel D’Utilisation

The UPS has an Emergency Power Off (EPO) function operated by a button on the control panel or by 

a remote contact provided by the user. The EPO button is under a hinged, clear plastic shield.
The X2 slot, shown in Figure 11, is the remote EPO input interface. The EPO has a NO/NC contact 

point becomes active when shorting terminals X2: 3 and 4 or open terminal connection X2: 2 and 1.
If an external Emergency Stop facility is required, it is connected terminals X2: 1&2 or X2: 3 and 4 of 

the auxiliary terminal block (X2). It also is connected to the Normally Open or Normally Closed 

remote stop switch between these two terminals using shielded cable (see Figure 11 and Table 6). If 

this function is not used, terminals X2: 3 and 4 must be opened and X2: 1 and 2 must be closed.

J28.1

EPO_NC

EPO Activated when opened to J28.2

J28.2

EPO_NC

EPO Activated when opened to J28.1

J28.3

EPO_NO

EPO Activated when shorted to J28.4

J28.4

EPO_NO

EPO Activated when shorted to J28.3

NOTE
The Emergency Stop action within the UPS shuts down the rectifier, inverter and static 

NOTE
Normally Closed EPO – X2: 1,2, these terminals are supplied factory-linked on the monitor 

NOTE
All auxiliary cables of terminal must be double-insulated. Wire should be 20-16AWG stranded