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Installation and User Manual
3.4 Restarting a Parallel Configuration
Check that switches Q4S (9) and Q5N (11) are closed. If this is the case, continue with this procedure, otherwise
refer to Section 4.4.2 or Section 4.4.3 "Return to the Normal Operation, Parallel UPS".
Figure 3-4: Restarting a Parallel Configuration
1 - Check that the output switch CB2 in the external
system bypass cabinet is closed.
2 - Check that the bypass switch CB1 in the external
system bypass cabinet is open.
Then carry out steps 3 to 5 below on each of the UPSs.
3 - Set the Normal AC source input switch Q1 (8) to the
ON position.
4 - Wait until the end of the start sequence.
5 - Set the battery circuit breaker of the auxiliary cabinets
to the ON position.
The UPSs start automatically. On each unit, LEDs (32)
and (33) go OFF and LED (31) goes ON.
The load is protected by the UPSs.
If LED (31) remains OFF, press the ON button (37) on
each UPS (the UPS is in manual start mode) and confirm
if necessary by pressing the function key (35) marked .
If LED (31) still remains OFF and either of LEDs (32) or
(33) is ON, a fault has occurred (see Section 4.1).
Operation 3 — 386-174010-00 B00