Salicru SLC CUBE 4 7.5 kVA Mode D'emploi page 95

Fig. 24. UPS manual bypass switch auxiliary contact connector.
4.6.3.3. EPO (Emergency Power Off) terminals.
The UPS has two terminals for the installation of an external Emer-
gency Power Off (EPO) button (Fig. 19).
By default, the unit is issued from the factory with the closed EPO
circuit type -NC-: the UPS will cut the power supply, emergency
stop, by opening the circuit:
Either by removing the female connector of the socket where
•
it is inserted. This connector has a cable connected as a bridge
that closes the circuit (see Fig. 25-A).
Or by activating the unit's external button, which belongs to
•
the user and is installed between the connector terminals (see
Fig. 25-B). The connection on the button must be in the nor-
mally closed (NC) contact, so the circuit will open when it is
activated.
Via the communication software, it is possible to select the reverse
functionality (NO).
However, and except for specific cases, we advise against this type
of connection in view of the purpose of the EPO button, as it will
not act upon an emergency request if either of the two cables that
run from the button to the UPS is cut (this anomaly would imme-
diately be detected in a closed EPO circuit -NC-, which, although
there is a risk of an unexpected cut in the powering of the loads,
ensures an effective emergency functionality).
To recover the normal operating status of the UPS, it is necessary
to insert the connector with the bridge into its receptacle or deac-
tivate the EPO button. The unit will be operational.
Fig. 25. Connector for the external EPO.
USER MANUAL SLC CUBE4 7,5 kVA a 20 kVA - UNINTERRUPTIBLE POWER SOIRCE (UPS)-
95