Emergency Power Off (Epo) - LEGRAND Archimod HE 240 Installation And Maintenance Manual

Archimod HE 240-480®

4.4.4 Emergency Power Off (EPO)

The UPS has an external normally closed contact (NC) that can be opened to activate the immediate stop of the equipment.
The EPO terminal is found on pins 3 and 4 of the 6-pole connector on the contact interface of each control panel.
The connection must be made as indicated below:
- connect the two EPO terminals of the control panels in parallel (connect pin 3 of the first terminal to pin 3 of the second
terminal and pin 4 of the first terminal to pin 4 of the second terminal);
- close the parallel on the normally closed (NC) external contact.
For the correct connection of the EPO, the following requirements must be adhered to:
- use a double-insulation cable of up to 10 meters in length;
- check that the switch used is galvanically isolated.
INDICATION
It is not possible to connect the EPO circuits of different UPSs in parallel. If necessary, use contacts on the EPO emergency
pushbutton isolated from each other.
The electric characteristics of the EPO interface are:
- voltage between terminals 3 and 4 with open circuit: 12Vdc.
- current between terminals 3 and 4 with closed circuit: 5mA.
The connection diagram is the following:
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