Huawei RMS-RELAY02B User Manual page 11

RMS-RELAY02B External Dry Contact Card
User Manual
The controller inside the external dry contact card controls the actions of four relays
according to the UPS status. The NC and NO contacts of each relay respectively connect to
the signal pins of the external dry contact card which contains 2x8 pins. Customers onsite can
select NC or NO as required.
Figure 2-4 Pin definitions and internal logic connection diagram
RS485 Address Settings
The 8-pin DIP switch used for setting the RS485 communications address is located at the
side of the RMS-RELAY02B module and near the board edge, as shown in
Figure 2-5 Side view of the RMS-RELAY02B module
Issue Draft A (2017-01-19) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2 Overview
Figure 2-5.
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