Dry Contact Card - Huawei FusionModule2000 Product Description

FusionModule2000 Smart Modular Data Center
Product Description

5.2.1.4.3 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-off
(EPO).
Figure 5-27 Dry contact card
Table 5-5 Ports on the dry contact card
Silk
Screen
BTG
0V
GEN
0V
BCB_OL
BCB_STA Port for monitoring the
BCB_DR
V
BCB_0V
EPO_NO
EPO_12V
Issue 06 (2020-05-21)
Description
Port for detecting battery
grounding faults
Port for signal ground
Port for detecting diesel
generator (D.G.) mode
Port for signal ground
Port for detecting the BCB
box
battery switch
Controls battery circuit
breaker trip. When the
voltage is +12 V, the circuit
breaker trips.
Port for signal ground
Emergency power-off
(EPO) port
+12 V
Copyright © Huawei Technologies Co., Ltd.
5 Power Supply and Distribution System
Status
 Connected: battery
grounding fault
 Disconnected: no
battery grounding
fault
 Connected: D.G.
mode

Disconnected:
non-D.G. mode

Grounded: BCB
box connected
 Disconnected:
BCB box not
connected
 Connected: battery
switch ON
 Disconnected:
battery switch
OFF
 0 V: battery
switch not tripped

12 V: battery
switch tripped
If the normally open
(NO) port is
connected to the
EPO_12V port, EPO
is triggered.
Initial Status
Disconnected
Disconnected
Grounded
Disconnected
0 V
Disconnected
33