UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
2 Overview
Issue 02 (2017-02-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
29
Indicator
Color
Status
Description
FAULT
Red
Steady on
The ECM has a critical alarm, and it needs
to be replaced.
Off
The ECM has no critical alarm or the DSP
of the ECM is being upgraded.
2.3.4.3 Dry Contact Card
The dry contact card allows the UPS to monitor and manage the battery system (including the
external battery switch), provide alarm signals for external devices, and implement remote
emergency power-off (EPO).
shows control signal ports on the dry contact card.
Figure 2-17
Dry contact card
describes the ports on the dry contact card.
Table 2-4
Ports on the dry contact card
Silk
Screen
Description
Status
Initial Status
BTG
Port for detecting battery
grounding faults
Connected: battery
grounding fault
Disconnected: no
battery grounding
fault
Disconnected
0V
Port for signal ground
GEN
Port for detecting diesel
generator (D.G.) mode
Connected: D.G.
mode
Disconnected:
non-D.G. mode
Disconnected
0V
Port for signal ground
BCB_OL
Port for detecting the BCB
box
Grounded: BCB
box connected
Disconnected:
BCB box not
connected
Grounded
BCB_STA Port for monitoring the
battery switch
Connected: battery
switch ON
Disconnected:
battery switch
Disconnected