Silk Screen Description
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.
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.
O This ECM is not ready or the software
of this ECM is being upgraded.
Blinking at 4
Hz
The software of the ECM is being
upgraded or not congured.
ALM Yellow Steady on The ECM has a minor alarm, but it
does not need to be replaced.
O The ECM has no minor alarm or the
software of the ECM is being
upgraded.
FAULT Red Steady on The ECM has a critical alarm.
O The ECM has no critical alarm or the
software of the ECM is being
upgraded.
2.3.4.3 Dry Contact Card
The dry contact card allows the UPS to detect and manage the switch status of
the battery system (including the external battery switch) and implement remote
emergency
power-o (EPO).
Figure 2-13 Dry contact card
UPS5000-E-(30 kVA–180 kVA)
User Manual (Integrated UPS) 2 Product Overview
Issue 02 (2022-12-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 37
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