Vertiv Liebert APM 300, User Manual

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Chapter 5 Operating Instructions 39
APM 300 Integrated UPS Single Module And Parallel System User Manual
Indicator State
Status indicator Yellow
2. Press and hold the INVERTER ON key for two seconds.
Note
You must close the UPS output switch first, then close the bypass input switch and rectifier input switch, and finally turn
on the inverters. Otherwise, the inverters will not start, and the UPS will generate Bypass STS fail alarm.
At this point, the inverters start and the inverter indicator flashes green. After the inverters enter normal
operation, the UPS transfers from the bypass to the inverters, the bypass indicator turns off, the inverter
indicator and load indicator turn on.
The UPS begins to operate in normal mode, and the states of the indicators are as shown in Table 5-2.
Table 5-2 Indicator state
Indicator State
Rectifier indicator Green
Battery indicator Off
Bypass indicator Off
Inverter indicator Green
Load indicator Green
Status indicator Green
5.2.2 Start-Up Procedures Into Battery Mode (Battery Cold Start)
Note
Only one power module is allowed in the main power cabinet before battery cold start.
1. Verify that the battery is properly connected.
2. Press the battery start button (see Figure 5-2) on the front panel of the power module.
Note
If more power modules are required, insert each power module 20 seconds after step 2. The interval for inserting each
power module should be more than 20 seconds. Ensure that the power modules are inserted into place. After inserting
each power module, press the battery start button of this power module.
At this point, the LCD displays the start screen, and the battery indicator flashes green. It stops flashing and
becomes solid green about 30 seconds after the rectifiers enter normal operation.
Battery start button
Figure 5-2 Location of battery start button
Note
After step 2, if any of the following conditions occurs, open the BCB or confirm that the BCB has tripped automatically
and is open. The system can be started up one minute later.

EPO pressed in emergency

Fault in system commissioning