UPS5000-S-880 kVA
User Manual (CMI)
2 Overview
Issue 02 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
28
(17) Battery temperature
sensor port
(18) Optional card
subrack cover
Ports are protected by a security mechanism.
2.3.5.2 ECM
Appearance
The control module consists of two energy control modules (ECMs) in active/standby mode.
Figure 2-13
ECM
Table 2-4
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 2-5
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.