Ecm - Huawei UPS5000-A-400K-SL User Manual

UPS5000-A-(400 kVA-500 kVA)
User Manual (40 kVA Power Modules)
Figure 2-12 Signal panel on the control unit

2.3.3.2 ECM

The control unit consists of two ECMs in active/standby mode. Each ECM provides one bus
synchronization controller (BSC) port and one parallel port, as shown in
Figure 2-13 ECM
Table 2-1 Ports on the ECM
Issue 06 (2020-01-10)
(1) Ground terminal
(4) ECM 1 ready
switch
(7) BSC port 2
(10) Dry contact card
(13) RS485 port
(16) COM1 port
Silk Screen Description
PARALLEL The PARALLEL port transmits parallel signals.
BSC This port is used in a dual-bus system to balance output frequencies and
phases between UPS systems, ensuring that two buses can switch with
each other.
BSC cables are hot-swappable.
Copyright © Huawei Technologies Co., Ltd.
(2) Parallel port 1
(5) Indicators for ECM 1
(8) ECM 2 ready switch
(11) Dry contacts
(14) Fast Ethernet (FE) port
(17) Battery temperature sensor
port
2 Overview
(3) BSC port 1
(6) Parallel port 2
(9) Indicators for ECM 2
(12) MDU port
(15) COM2 port
(18) Optional card subrack
cover
Figure 2-13.
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