Backfeed Protection Card - Huawei UPS5000-H-400K-FT Manual

UPS5000-H-(400 kVA-600 kVA)-FT
User Manual (100 kVA Power Module)
Silk Screen Type
COM
DI_1 + Input
-
DI_2 +
-
DI_3 +
-
DI_4 +
-
DI_5 +
-
Figure 2-23 DO port wiring methods

2.7.4 Backfeed Protection Card

When energy backfeed occurs, the backfeed protection card sends signals to
trigger alarm signals or quickly disconnect the feedback loop. The card is hot
swappable.
Figure 2-24 Appearance
Issue 03 (2022-11-29)
Working
Principle
Copyright © Huawei Digital Power Technologies Co., Ltd.
Signal Description
● After the defined dry contact signals take
effect, the system will be able to generate
corresponding alarms.
● The maximum voltage and current of the built-
in power supply are 12 V DC/16 mA.
● All DIs are reserved.
● On the LCD, choose System Info. > Settings >
Dry Contact Settings and set MUE07A DI_1–
MUE07A DI_5 as required. The default value is
None.
● After the defined dry contact signals take
effect, the system will be able to generate
corresponding alarms.
2 Product Overview
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