IV306E Rev. 004 Siel S.p.A.
Page 30 of 37 + 12 Tables, 14 F FR
Issued date: 2014-03-24
2) Close switch S1 (rectifier input) and switch S2 (output). During this phase it is necessary to verify
that the display shows the following:
- Rectifier on
- Battery on float charge
- Battery voltage OK
- Load on reserve
LEDs on the Functional Diagram will illuminate to show the following indications:
- RECTIFIER ON (LED 1 Figure 5)
- RESERVE OK (LED 5)
- LOAD ON RESERVE (LED 6)
[Repeat the operation on all the UPS units making up the system]
From now on, the UPSs power the load on reserve.
3) Simultaneously press pushbutton 6 (INVERTER ON) and pushbutton 7 (START/STOP
CONFIRMATION). LED 3 will illuminate on the Functional Diagram (INVERTER ON). After about
30 seconds LED 4 will illuminate (LOAD ON INVERTER) and LED 6 (LOAD ON RESERVE) will
extinguish.
If the acoustic alarm has not been muted before, it will now be muted automatically as every alarm
condition has disappeared.
4) Close the battery disconnect switch located in the battery cabinet (after checking that the battery OK
signal is still ON).
Caution! If the battery is connected when the signal "Battery voltage OK" is not active, the protection
fuse trips; this fuse can only be replaced by Siel personnel.
The following indications will appear on the display:
"Rectifier ON"
"Battery on float charge" or "Battery on boot charge"
"Battery voltage OK"
"Inverter ON"
"Inverter-Reserve Synchronized"
"Load on Inverter"
"Reserve OK"
"UPS Regular Operation"
[ Repeat the operation on all the UPS units making up the system]
From now on, the UPSs operate smoothly and the load is fed on inverters.
SWITCHING THE SYSTEM OFF AND ON
1)To carry out the Inverter-Reserve switchover, it is necessary to simultaneously press the Switching
and Switching Confirmation pushbuttons (pushbuttons 9 and 10 in Figure 4). [
on a UPS unit]
On the Functional Diagram of the machine, the LED will go off corresponding to:
- Load on Inverter (LED 4)
Simultaneously the LED indicating the following will switch on:
- Load on reserve (LED 6)
The display will show the following message:
“Load on reserve”
2) Simultaneously press the Inverter OFF and Inverter stop confirmation pushbuttons (pushbuttons 7
and 8).
[of a machine]
On the Functional Diagram, the LED will go off corresponding to:
- Inverted ON (LED 3)