IV404E Rev.000 SIEL S.p.A.
Issue date: 2017-06-05 Pag. 29 di 90 + FR
3.3
Connection of signals and remote commands
To the position of the signal and remote connection, refer to the
“INSTALLATION DRAWINGS”
supplied
with the UPS.
3.3.1 EPO connector (emergency power off control)
If the jumper on the connector is opened, the voltage on
the UPS output will be cut.
The UPS is factory-fitted with the EPO terminals
shortcircuited. If this input is used, the UPS can be shut
down in a hazardous situation from a remote position
simply by pressing a button.
If only the power supply is removed, for example by
opening the switch of the power supply panel, the UPS will
keep the load powered using the energy in the batteries
3.3.2 REMOTE COMMANDS AND ALARMS
The card is equipped with a terminal board with 12 positions which has the following:
POWER SUPPLY 1 power supply 12Vdc 80mA(max.) [pins 10 and 11];
ALARMS
3 potential-free change-over contacts for alarms;
COMMAND
1 command programmable from the panel [pins 11 and 12];
The functions of the three contacts and the command may be reprogrammed via the display panel. The
ALARMS and the COMMAND are factory-set in the following way:
- ALARMS
- RL1
Bypass / fault, the contact changes position when the UPS switches the
load onto the by-pass line either during normal operation (e.g. due to
overload) or as a result of a fault in the inverter stage;
- RL2
Battery discharging, the contact changes position when the load is powered
from the battery due to a mains power failure;
