Remote Emergency Power Off (Epo); Battery Auxiliary Contact; Diesel Generator Auxiliary Contact; Serial Interfaces And External Connections - LEGRAND KEOR HPE Manuel De Fonctionnement

4.5.4 Remote emergency power off (EPO)

Auxiliary EPO contact on terminals X10-7/8.
The voltage supply to the loads can be interrupted from a remote location by using this contact (i.e.
for safety requirements). A normally closed contact is required; when this contact is open the static
inverter and by-pass switches are opened so that the output supply is interrupted.
In case the external EPO command is not provided short-circuit the terminals 7-8.

4.5.5 Battery auxiliary contact

Battery auxiliary contact on terminals X10-9/10.
This auxiliary contact is necessary to indicate the position of the isolator (open-closed).

4.5.6 Diesel Generator auxiliary contact

Auxiliary contact from the Diesel Generator on terminals X10-11/12.
A normally open contact must be used; the contact must close when the diesel generator is
operating.
The microprocessor will acquire the status of the contact and, upon the rectifier start-up, it will
enable the "Diesel Mode" operation, that is the operation at reduced DC voltage in order to reduce
the power drawn from the AC line.
4.6

SERIAL INTERFACES AND EXTERNAL CONNECTIONS

The UPS is provided with serial interfaces and external connection facilities for the communication of
the operating status and parameters.
Picture 9 – Position of the serial interfaces of KEOR HPE 400-500 kVA
38 OMT87187 REV. A
Installation and start-up of KEOR HPE UPS 400-500 kVA
Installation et démarrage de l'ASI KEOR HPE 400-500 kVA
Installazione e avviamento KEOR HPE UPS 400-500 kVA