Modifications reserved
Page 68/79
OPM_SGS_USM_M40_M50_2US_V010.doc
User Manual
SG Series 400 & 500 UL S2
2. Close the UPS Output Switch Q1 (Pos. I) on the Unit to reconnect
.
•
Rectifier
starts automatically, blinking
LED 3 (Rectifier ON)
indicates Soft-start.
•
At the end of
Rectifier
Soft-start the
LED 3 (Rectifier ON)
remains lit.
Synoptic diagram of the unit to reconnect
Synoptic diagram of other units
3. Connect the Battery on the Unit to reconnect by closing (Pos. I) the External Battery Switch or
Fuses.
LED 4b
(Charging Battery)
should be lit indicating
battery charge
.
ATTENTION !
Before performing this operation, the
LED 3 (Rectifier ON)
must remain lit, thus
indicating that the DC-Link has reached floating voltage (540Vdc)!
4. Insert the Inverter by pressing the “Inverter ON” ( I ) key on the Unit to reconnect.
•
The
inverter
will start up.
LED 5 (Inverter available)
must be blinking
In a short time, when the
Inverter voltage
is confirmed, the
LED 5 (Inverter available)
will stop blinking and
stay fixed lit.
The
Load
will be automatically shared between the
Parallel Units
and this
Inverter
.
•
LED Alarm
turn Off and the
LED Operation
must be lit.
Verify on display screen that the load should be equally shared between the parallel units.
The
synoptic diagram
, on all UPS units, must display the status
“
LOAD SUPPLIED BY INVERTER
”
.
Synoptic Diagram of the unit to reconnect
Synoptic Diagram of other units
END OF PROCEDURE