Dry Contact Card - Huawei UPS5000-E-600K-SC User Manual

UPS5000-E-(600 kVA-800 kVA)
User Manual
Figure 2-15 ECM
In a parallel system, the PARALLEL ports on ECMs are interconnected using parallel cables.
For a single UPS, the parallel cable is not needed. A hot swappable BSC is used in a dual-bus
system to process the communication information of two UPS systems.
the functions of the ECM.
Table 2-1 Ports on the ECM
Silk Screen
PARALLEL
BSC

2.4.3 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 2-16
Figure 2-16 Dry contact card
Table 2-2
Issue 02 (2016-01-20)
Description
This port transmits parallel signals. To connect UPSs in parallel,
use a parallel cable to connect the parallel ports on the ECMs of the
UPSs. N UPSs require N parallel cables so that at least two parallel
cables are connected to each UPS, which improves reliability.
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.
shows control signal ports on the dry contact card.
describes the ports on the dry contact card.
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2 Overview
Table 2-1 describes
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