Huawei RMS-RELAY02B User manual

RMS-RELAY02B External Dry Contact Card
User Manual
Issue
Draft A
Date
2017-01-19
HUAWEI TECHNOLOGIES CO., LTD.

Issue Draft A (2017-01-19)
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Copyright © Huawei Technologies Co., Ltd.
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Copyright © Huawei Technologies Co., Ltd. 2017. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
http://e.huawei.com

RMS-RELAY02B External Dry Contact Card
User Manual
About This Document
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About This Document
Purpose
This document describes the RMS-RELAY02B card in terms of its features, appearance,
installation, usage, and operation.
The RMS-RELAY02B is an optional communications card designed for the UPS2000-G-(1
kVA–20 kVA) and UPS2000-A-(1 kVA–3 kVA) series.
The external dry contact card mentioned in this document refers to the RMS-RELAY02B
card.
Intended Audience
This document is intended for:
Sales engineers
Technical support engineers
System engineers
Hardware installation engineers
Commissioning engineers
Data configuration engineers
Maintenance engineers
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Description
Indicates an imminently hazardous situation which, if
not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.

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User Manual
About This Document
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Symbol
Description
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to
personal injury.
Calls attention to important information, best practices
and tips.
NOTE is used to address information not related to
personal injury, equipment damage, and environment
deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue Draft A (2017-01-19)
This issue is used for first office application (FOA).

RMS-RELAY02B External Dry Contact Card
User Manual
Contents
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Contents
About This Document.................................................................................................................... ii
1 Safety Precautions.........................................................................................................................1
2 Overview.........................................................................................................................................2
2.1 Introduction ..................................................................................................................................................................2
2.2 Appearance and Ports ...................................................................................................................................................3
2.3 Dry Contact Specifications ...........................................................................................................................................7
3 Installation......................................................................................................................................8
3.1 Unpacking and Checking..............................................................................................................................................8
3.2 Preparations ..................................................................................................................................................................8
3.3 Installation Procedure...................................................................................................................................................9
3.4 Software Settings........................................................................................................................................................12
A Acronyms and Abbreviations..................................................................................................14

RMS-RELAY02B External Dry Contact Card
User Manual
1 Safety Precautions
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1
1 Safety Precautions
Only professional technical personnel designated by Huawei are allowed to install and
operate the external dry contact card.
Carefully read this document before operating the external dry contact card. Keep this
document for future use.
Before handling the external dry contact card, get tools insulated and take off conductors
such as jewelry and watches.
To avoid damage, move the external dry contact card gently.
Ensure that the dry contact of the external dry contact card is connected only to safe
low-voltage circuits. Otherwise, the card may be damaged and even safety accidents may
occur.
Before connecting external devices to the dry contact card, confirm that they meet the
required electrical specifications.

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User Manual
2 Overview
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2 Overview
2.1 Introduction
The external dry contact card provides dry contact signals. It can remotely manage a UPS by
connecting to the UPS over an SNMP card. The external dry contact card is applicable in the
following scenarios:
IBM servers, PCs, and workstations.
Automatic control industry equipment and communications applications.

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2.2 Appearance and Ports
Appearance
Figure 2-1 External dry contact card
(1) External dry contact card
(2) RUN indicator
(3) ALM indicator
(4) RS485_IN port
(5) RS485_OUT port
(6) Dry contact port
(7) Reset button
(8) Dual in-line package
(DIP) switch
(9) Fastener
If the RUN indicator turns on after the external dry contact card is connected to a power supply, the
external dry contact card is working properly.
The ALM indicator turns on when the external dry contact card fails to communicate with the SNMP
card.
Press the reset button to reset signals.
Port Description
The RS485_IN and RS485_OUT ports are used for communication between the external dry
contact card and the UPS. Figure 2-2 shows the port pins and Table 2-1 lists the pin
definitions.

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Figure 2-2 RS485_IN and RS485_OUT ports
Table 2-1 RS485_IN and RS485_OUT port pin definitions
Function
Terminal
Type
No.
Pin
Definition
Terminal
RS485_IN
RJ45
1
RS485A
RJ45 terminal
2
RS485B
3
12V_IN
4
RS485A
5
RS485B
6
N/A
7
N/A
8
GND
RS485_OUT
RJ45
1
RS485A
RJ45 terminal
2
RS485B
3
12V_IN
4
RS485A
5
RS485B
6
N/A
7
N/A
8
GND
The external dry contact card provides a dry contact, as shown in Figure 2-3.

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Figure 2-3 Drycontact port
Table 2-2 Dry contact pin definitions
Functio
n
Termin
al Type
No.
Pin
Definition
Preset Value on
the SNMP Card
WebUI
Function
Dry
contact
LS
spring-ty
pe
terminal
1
DO
1
NC_1
Mains
mode
N/A
Customers can set the
associated event of the
dry contact port and
set the type of input
dry contact (DI). For
details, see 3.4
Software Settings.
The associated
event of DO1 to
DO4 can be set to
None, Critical
alarm, Minor
alarm, Mains
mode, Battery
mode, Bypass
mode, Inverter
on, Batt.
undervolt.,Bypass
backfeed , High
ambient temp., or
UPS fault.
The associated
event of DI1 and
DI2 can be set to
None, Startup, or
Shutdown. The
type of DI1 and
DI2 can be set to
NO or NC.
2
COM_
1
3
NO_1
4
DO
2
NC_2
Battery
mode
N/A
5
COM_
2
6
NO_2
7
DI1
DI1
Shutdown
NO
8
GND
9
DO
3
NC_3
Bypass
mode
N/A
10
COM_
3
11
NO_3
12
DO
4
NC_4
Batt.
undervolt.
N/A
13
COM_
4
14
NO_4
15
DI2
DI2
None
NO
16
GND

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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.
Figure 2-5 Side viewof the RMS-RELAY02B module

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The configurable address ranges from 1 to 255. The DIP switch is set based on the binary
method. 1 indicates the least significant bit and 8 indicates the most significant bit. ON
indicates 0. OFF indicates 1.
When connected to an SNMP card, the address of the external dry contact card is fixed at 8,
that is, toggle switch 4 is set to ON and other toggle switches are set to OFF.
Table 2-3 DIP switch and address description
DIP Switch
Address
1
2
3
4
5
6
7
8
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
0
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
2
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
3
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
4
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
5
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
6
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
7
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
8
…
…
…
…
…
…
…
…
…
ON
ON
ON
ON
ON
ON
ON
ON
255
2.3 Dry Contact Specifications
Table 2-4 lists the dry contact specifications.
Table 2-4 Dry contact electrical specifications
Item
Specifications
DO
Output
Maximum contact
power
30 W
Rated contact voltage
30 V DC
60 V DC
Rated contact current
1 A
0.5 A
DI
Input
Input dry contact
supply voltage range
12–24 V DC

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3 Installation
3.1 Unpacking and Checking
After an external dry contact card is delivered onsite, unpack and check it as follows:
Visually inspect the package of the dry contact card for shipping damage. If any damage
is found, notify the carrier immediately.
Check that the fittings comply with the packing list. If any discrepancy is found, record
the information and contact the local Huawei office immediately.
3.2 Preparations
Table 3-1 Installation tools
Installation Tool
Insulated Phillips
screwdriver
Multimeter
Label
PVC insulation tape
RJ45 crimping tool
ESD gloves
Cable tie
Hand-held electric
drill

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3.3 Installation Procedure
Wear ESD gloves during installation.
The external dry contact card is hot-swappable. You can maintain it without powering off
the UPS.
Magnet-based Installation
The external dry contact card can be magnet-mounted. It can be attracted to metal materials,
such as the cabinet shell.
Fastener-based Installation
Procedure
Step 1 Use two M4 screws to secure the fastener of the external dry contact card to the wall or
ceiling near the UPS, as shown in Figure 3-1.

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Figure 3-1 Securing the fastener
Step 2 Clamp the clips at the bottom of the dry contact card shell to the fastener, as shown in Figure
3-2. The dry contact card is secured to the fastener, as shown in Figure 3-3.
1. Insert the clips of the dry contact card into the hole of the fastener.
2. Clamp the dry contact card into the card slot of the fastener.
Figure 3-2 Installing an external drycontact card

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Figure 3-3 Securing the external dry contact card to the fastener
Step 3 Connect the dry contact card to the SNMP card through which the dry contact card connects
to the UPS.
The RMS-SNMP01B card of the UPS2000-G-(1 kVA–3 kVA) and UPS2000-A-(1 kVA–3
kVA) does not support connection to a temperature and humidity sensor and an external
dry contact card at the same time.
The RMS-SNMP01A card of the UPS2000-G-(6 kVA–20 kVA) does not support
connection to a temperature and humidity sensor and an external dry contact card at the
same time.
Figure 3-4 Scenario with the UPS2000-G-(1 kVA–3 kVA) or UPS2000-A-(1 kVA–3 kVA)

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Figure 3-5 Scenario with the UPS2000-G-(6 kVA–20 kVA)
----End
3.4 Software Settings
Procedure
Step 1 Choose Config > RMS-RELAY02B Settings and set RMS-RELAY02B input to Enabled.
Step 2 Set the associated event for the DO port and set the associated event and type for the DI port.
For DO1 to DO4:
The NO and COM pins of DO are closed, and the NC and COM pins of DO are open, when the
associated event is consistent with the UPS status; otherwise, the NC and COM pins of DO are
closed, and the NO and COM pins of DO are open.
For DI1 and DI2:
If Type is set to NO, the UPS executes the configured associated event when DI has a 12–24 V DC
input; otherwise, the UPS does not execute the associated event.
If Type is set to NC, the UPS does not execute the configured associated event when DI has a 12–24
V DC input; otherwise, the UPS executes the associated event.

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The UPS performs the shutdown command if Type is set to NO, DI1 is set to Startup, DI2 is set to
Shutdown, and there is a 12–24 V DC input. If the UPS is faulty, it does not perform the startup
command when DI is set to Startup. Rectify the UPS fault first.
Using DO1 and DI1 as examples, Table 3-2 and Table 3-3 list the association between DI/DO status and
UPS status.
Table 3-2 Association between DO status and UPS status
Name
Associated Event
UPS Status
DO Status
DO1
Bypass mode
Bypass mode
NO and COM pins of DO
are closed, NC and COM
pins of DO are open.
DO1
Bypass mode
Mains mode
NC and COM pins of DO
are closed, NO and COM
pins of DO are open.
Table 3-3 Association between DI status and UPS status
Name
Type
Associated
Event
DI Status
Execute Event or
Not
DI1
NO
Startup
There is a
12–24 V DC
input.
Yes
DI1
NC
Startup
There is a
12–24 V DC
input.
No
DI1
NO
Startup
There is no
input.
No
DI1
NC
Startup
There is no
input.
Yes
----End

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A Acronyms and Abbreviations
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A Acronyms and Abbreviations
N
NC
normally closed
NO
normally open
S
SNMP
Simple Network Management Protocol
U
UPS
uninterruptible power system