Dry Contact Card - Huawei UPS5000-H User Manual

UPS5000-H-(400 kVA-800 kVA)
User Manual (100 kVA Power Modules)
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.
● A dry contact card port takes effect only after you set it in the software. You
● 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
● Signal cables must be double-insulated twisted cables. If the cable length is
● For dry contact outputs, the rated DC voltage and current are 24 V DC and 0.6
Figure 4-7 Appearance
Issue 03 (2021-08-03)
NO TICE
need to disable unused dry contact signals.
to each UPS.
within 25–50 m, the cross-sectional area must be 0.5–1.5 mm
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.
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