Figure 4-6 CAN communication logic
4.3.3 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). The dry contact card is 0.5 U high and hot-
swappable.
NO TICE
● A dry contact card port takes effect only after you set it in the software. You
need to disable unused dry contact signals.
● Set the EPO port to normally open (NO) or normally closed (NC) as required.
● If multiple UPSs are connected in parallel, connect all used dry contact signals
to each UPS.
● Signal cables must be double-insulated twisted cables. If the cable length is
within 25–50 m, the cross-sectional area must be 0.5–1.5 mm
2
.
● For dry contact outputs, the rated DC voltage and current are 24 V DC and 0.6
A and the maximum values are 30 V DC and 1.0 A. The rated AC voltage and
current are 24 V AC and 0.6 A and the maximum values are 30 V AC and 1.0 A.
During cable connection, ensure that the voltage and current do not exceed
these maximum values.
Figure 4-7 Appearance
UPS5000-H-(400 kVA-800 kVA)
User Manual (100 kVA Power Module)
4 Component Description
Issue 02 (2021-04-22)
Copyright © Huawei Technologies Co., Ltd.
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