UPS5000-S-880 kVA
User Manual (CMI)
5 Operations
Issue 02 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
171
5.7 Emergency Shutdown
After you turn on the EPO switch, the UPS supplies no power, and the loads shut down.
Press the external EPO switch that connects to the dry contact card or remove the 4-pin
terminal on the EPO port of the dry contact card.
Figure 5-19
EPO port position
After you press the EPO button, the system reports
emergency shutdown
and
no power
supply
alarms.
5.8 Clearing the EPO State
Procedure
Step 1
Clear the EPO state. Ensure that the EPO button connected to the dry contact is not in the
EPO state.
Step 2
Clear the EPO alarm.
On the LCD
On the LCD, choose
System Info
>
Alarms
and tap
Clear Faults
. In the displayed
dialog box, tap
Yes
. The EPO alarm is cleared successfully.
On the WebUI
Choose
Monitoring
>
Control
>
System Commands and Tests
and click
Clear Fault
.
The EPO alarm is cleared successfully.
Step 3
Check that the EPO alarm is cleared by viewing active alarms. If the system bypass input is
normal, the UPS transfers to bypass mode.
Viewing active alarms on the LCD
Choose
System Info
>
Alarms > Active Alarms
to check that the EPO alarm is cleared.
Viewing active alarms on the WebUI
Choose
Monitoring
>
Active Alarms
to check that the EPO alarm is cleared.