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7
UPS Operation
7.2.1 Normal Mode Start-up Procedures (Parallel)
1
Turn on the circuit breakers or fuses of all external battery cabinets.
2
Switch on each UPS's Bypass Switch (Q2). After initialization, all fans start running,
each unit's Bypass AC Source LED
and Bypass Power Supply LED illuminate,
and the following screen appears on each unit's LCD.
BYPA.
MAIN
2010 - 06 - 01
11 : 59 : 59
UNIT : #1.1
LOAD UNPROTECTED
ON AUTO BYPASS
TO BROWSE EVENT
(004)
PRESS
3
Turn on each UPS’s Input Switch (Q1), each unit’s Main AC Source LED
illuminates, each UPS’s DC BUS voltage starts establishing, and the following screen
appears on each unit’s LCD.
BYPA.
MAIN
2010 - 06 - 01
11 : 59 : 59
UNIT : #1.1
LOAD UNPROTECTED
ON AUTO BYPASS
TO BROWSE EVENT
(004)
PRESS
4
Press each UPS’s ON button for three to ten seconds and release it after you hear
one beep. In the meantime, each unit’s inverter starts up, each unit’s Inverter Start-up
LED
is on, each UPS is in bypass mode, and the following screen appears on each
unit’s LCD.
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