UPS5000-E-(25 kVA-75 kVA)-BF
User Manual
2 Overview
Issue 07 (2019-12-13)
Copyright © Huawei Technologies Co., Ltd.
28
Figure 2-16
ECM
Table 2-2
Ports on the ECM
Silk Screen
Description
PARALLEL
The PARALLEL port transmits parallel signals between racks.
BSC
The BSC port is used in a dual-bus system to synchronize output
frequencies and phases between UPS systems, ensuring that two buses
can switch with each other.
BSC cables are hot-swappable.
For a single UPS, the parallel cable is not needed.
Table 2-3
Indicator description
Indicator
Color
Status
Description
NORMAL
Green
Steady on
This ECM is the active ECM.
Blinking at
0.5 Hz
This ECM is the standby ECM and it is ready.
Off
This ECM is not ready or the CPLD of this
ECM is being upgraded.
Blinking at
4 Hz
The DSP of the ECM is being upgraded or not
configured.
ALM
Yellow
Steady on
The ECM has a minor alarm, but it does not
need to be replaced.
Off
The ECM has no minor alarm or the DSP of the
ECM is being upgraded.
FAULT
Red
Steady on
The ECM has a critical alarm.
Off
The ECM has no critical alarm or the DSP of the
ECM is being upgraded.