Huawei UPS5000-E-300K-SMT - Dry Contact Card

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).
Figure 2-17 shows control signal ports on the dry contact card.
Figure 2-17 Dry contact card
Table 2-4 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