Vertiv RDU-A G2 User Manual

LIEBERT® RDUA G2

Intelligent Monitoring Solution

FEATURES

The Liebert® RDU-A G2 allows

data center managers to perform
the following operations through
a secure web page:

 Monitoring of the health and

status of the equipment

 Monitoring of environmental

conditions i.e. temperature
and humidity, leak and smoke.

 Monitor the improved

communication speed in
transmitting control or
commands to the equipment
and parameter setting

 Records Data and Logs of

historical information of
alarms and notifications

3rd Party Communications:

 SNMP

The Liebert® RDU-A G2 is an infrastructure management
solution from Vertiv that allows data center administrators to
manage environmental conditions i.e. temperature and
humidity, leak, smoke, vibrations and digital inputs and
outputs. It is also capable of monitoring infrastructure
appliances such as UPS, precision cooling units, generator
sets and etc. The Liebert® RDU-A G2 is equipped with a
built-in web server, eliminating the need to perform a
software installation.

FRONT

 Modbus 485

 Dry contacts

 Analog Signals

Power Input 1

100 ~ 240VAC

Console Port USB

USB Camera /
Modem Port

Network Port 1 and 2

10/100Mbps

Relay Output 1 and 2

+12Vdc @ 0.2A

Digital Input 1 and 2

+12Vdc @ 0.1A

Power Input 2

100 ~ 240VAC

COM Port 3 (2 ports)

COM Port 1, 2

Sensor Port 1 (2 ports)
Sensor Port 2 (2 ports)

+12Vdc @ 0.2A

Smoke Sensor Port 1 and 2

+12Vdc @ 0.1A

BACK

LEGEND:

Modbus 485 Com Port

Environmental Sensor Port

Contact Closure Output Port

  Ethernet and SNMP Port

2 Slots for optional
4COM Port Card / 8DIAI
Card / 8DOAO Card

LIEBERT® RDUA G2

The Liebert® RDU-A G2 serves as the communication gateway for the equipment and the Liebert® RDU-M solution. It
intelligently collects and communicates data and commands, giving IT administrators a comprehensive view of what’s
happening at the equipment level of the facility.

Infrastructure Management

1. Modbus 485 and/or SNMP
Communications

i. Default of 16 devices in an

RDU module (Can be all

Modbus 485, or all SNMP, or
a Mix).

ii. Can be extended to have

additional 16 devices more
by purchasing licenses to
make the total to a maximum
of 32.

iii. Each COM port can support a

maximum of 4 daisy chained
connection (need to be same
device) BUT maximum Per

device will still be 32 devices.

Note: If communicating to a 3rd part
will need to get SNMP MIB File for SNMP
communication and Modbus Reference Library
for Modbus communication to build driver. This
will incur additional charges.

y device,

Modbus 485 Communications

485 Daisy Chain

High Level Modbus 485

 

Communications

High Level Modbus 485

Communications

SNMP Communications

Network Cable Network Cable

485 Daisy Chain

3rd Party
Network Switch

Video

surveillance

1. Directly connect 1 x IP Camera

2. Connect 4 x IP Cameras via NVR

RDU-A G2 Module

LIEBERT® RDUA G2

Environmental:

1. Temp and Temp/Hum Sensor

i. By default (without the optional

THUB) it can support up to 32
sensors

ii. When THUB is connected, total

maximum will be 80 sensors

iii. Sensor Port 1 can only support

Temp and/or Temp/Humid Sensor
(max 16)

iv. Sensor port 2 supports 16 knots.

When 2 x 4DIF sensors are
connected with all of the ports
used, this will be considered as 10
knots (2x4DIF + 8 Sensors), the
remaining 6 knots can be used for
T /TH sensors.

Note: Each knot is considered to be 1 Sensor
EXCEPT for the Smoke and Infrared Sensors which is
considered to be 4 knots each.

Temperature Sensor

Temperature Sensor

4DI Modular Extension

(For sensor port 2)



Standard RJ45 Straight through patch cable

Leak

InfraredSmoke

Door

2. Digital Input Sensor (Door Sensor, Water Leak Sensor, Smoke Sensor, Motion Sensor, Vibration Sensor)

i. By default (without the optional 8DIAI Extension card) it can support up to 12

(8 of the 12 will be coming from 4DI sensor connected to the Sensor Port).

ii. When 2 pieces of 8DIAI cards are connected, maximum of 28 Digital Input Sensors

3. Analog Input Sensor

i. Maximum of 16 inputs using 2 pieces of 8DIAI optional card

4. Analog Output

i. Maximum of 16 outputs using 2 pieces of 8DOAO card

5 .Digital Output

i. Maximum of 18 (2 default digital output + 16 from 2 pieces of 8DOAO card)

Note: When using Smoke and Infrared Sensors, it is considered to be 4 knots each or an equivalent of 4 sensors each.

Environmental: RDU-THUB

RDU-A Generation 2



Can connect to any RS485 port of RDU-A G2

1. 16 Sensor port extension hub

i. Each sensor can have up to a



Standard RJ45 Straight through patch cable

maximum of 3 sensors each.

ii. Each of the sensor ports can

RDU-THUB

only accept Temperature and/or
Temperature/Humidity sensors
(This cannot accept DI sensors or

Standard RJ45 Straight through patch cable

any 4DI/4DIF)

iii. Maximum of 48 sensors in 1

RDU-THUB. Total maximum when
connected to the RDU-A G2 will
be 80 sensors (32 on RDU-A G2 +
48 on RDU-THUB)

iv. 1 RDU-A G2 can only support 1

RDU-THUB



LIEBERT® RDUA G2

Mechanical Specifications

External model Measurement Valve Error

Height 43mm <±0.5 mm

RDU-A G2

Width 440mm <±1 mm

Depth 311mm <±1 mm

Weight <8kg

Height 20mm <±0.5 mm

IRM-4COM

Width 158mm <±1 mm

IRM-8DIAI

IRM-8DOAO

Depth 199mm <±1 mm

Weight <1kg

Environment Conditions

Item Requirement

Application location Usually in data center or computer room, with air conditioner

Working temperature -10ºC ~ +60ºC

Relative humidity 5%RH ~ 95%RH, no condensing

Working environment

Air pressure 70kpa ~ 106kpa

Storage temperature -40ºC ~ +70ºC

Cooling Natural cooling

Dust: compliant with the indoor requirements of GR-63. No corrosive gas, flammable gas, oily mist, steam,

water drops or salt

Power distribution
network

TT/TN

Protection level IP20

Performance Specifications

Ports Cable standard Distance (unit: m)

SENSOR1 Standard category 4 twisted-pair cable ≤ 100

SENSOR2 Standard category 4 twisted-pair cable ≤ 100

DI ports Standard category 4 twisted-pair cable ≤ 100

DO ports Standard category 4 twisted-pair cable ≤ 100

COM ports Standard category 4 twisted-pair cable ≤ 100

Product Certificate: RDU-A G2 satisfies CE allege.

VertivCo.com

© 2017 Vertiv C o. All rights reser ved. Vertiv, the Vertiv lo go are trademarks or re gistered tradem arks of Vertiv Co. All othe r names and logos r eferred to are trade na mes, trademarks o r registered trade marks of their respe ctive owners. Whi le every
precauti on has been taken to en sure accuracy and c ompleteness he rein, Vertiv Co. as sumes no respons ibility, and discla ims all liability, for d amages resultin g from use of this informa tion or for any errors or o missions. Spe cifications are s ubject to change
without notice.

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