Emerson 400V Manuel D’Utilisation

There are three output dry contact relays at the X1 slot (see Figure 4 and Table 6)

The UPS has an Emergency Power Off (EPO) function that operates 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 4, is the remote EPO input interface. The EPO has an NO/NC contact 

point that 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&4 of the 

auxiliary terminal block (X2). It also is connected to the normally open or normally closed remote stop 

NOTE
All auxiliary cables of terminal must be double-insulated. Wire should be 0.5-1.5mm

J13.2

BFP_O

Bypass feedback protection relay; normally open. Closed when bypass SCR is shorted.

J13.3

BFP_S

Bypass feedback protection relay center

J13.4

BFP_C

Bypass feedback protection relay; normally closed. Open when bypass SCR is shorted.

J21.2

INV_O

Inverter mode relay; normally open. Closed when UPS is in inverter mode.

J21.3

INV_S

Inverter mode relay center

J21.4

INV_C

Inverter mode relay; normally closed. Open when UPS is in inverter mode.

J25.2

ACF_O

Main input fault relay; normally open.  Closed when main input is in fault.

J25.3

ACF_S

Main input fault relay center

J25.4

ACF_C

Main input fault relay; normally closed. Open when main input is in fault.