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LIEBERT® RDU-S™ RACK MANAGEMENT DEVICE
Product Specification
Description
The Liebert RDU-S is a compact rack processing unit designed to monitor the environment in electronic
equipment racks and rooms through various types of sensors and cameras. The unit can accommodate
multiple sensors, such as temperature, humidity, water, smoke, motion and door sensors. It can also be used
for remote notification such as activating a beacon light to report problems.
The compact design makes it suitable for installation in a rack, where it takes up little space, or it may be
mounted on a wall for access without opening the equipment rack.
Hardware and Components - What’s Included
The unit comes standard with the following components:
Item
Quantity
Item
Quantity
• Liebert RDU-S Rack Management Device
1
• Mounting brackets
2
• Power cords
2
• IEC-320-C13 to NEMA 5-15P power cord
1
• Round hangers for vertical
mounting
2
• IEC-320-C13 to IEC-320-C14 power cord
1
• Quick-start guide, SL-31305
1
Dimensions
The dimensions of the unit are shown below:
Height
1-3/4" (45mm)
Width
17-3/8"
(441mm)
Depth
2-1/4" (57mm)
Mounting Options
Mount the Liebert RDU-S securely before connecting equipment, typically in a 19" rack or mounted on a wall.
Mounting options include:
• Horizontal mounting in a rack with factory-supplied brackets and
screws (shown below)
Vertical Rack Mounting
Mounting holes
A-H for round
hanger
Horizontal Rack Mounting
Mounting hole
for rack mounting
A
B
E
F
Mounting
Hole
Round
Hanger
FRONT OF UNIT
Bracket flush with front of unit
• Wall mounting with factory-supplied brackets and screws
• Vertical mounting in a rack with a factory-supplied round hangers
(shown at right)
1
C
D
G
H
TOP
OF
UNIT
REAR
OF
UNIT
Ports and Indicators
Figure 1 shows the front panel of the Liebert RDU-S. The ports and their functions are listed in Table 1.
Figure 1
Ports and indicators on front of unit
Ground
connector
FRONT OF UNIT
Relay
output
ports
Power
input
Table 1
RJ45 sensor
ports
Micro SD
card slot
12VDC
output
Status
indicators
Ethernet
port
USB ports
Port descriptions
Port
#
Label
Function
Power input
1
100-240V~Input
Input power to the unit: 100-200VAC, 50 and 60Hz
Relay output ports
2
DO1, DO2
Connect to output relays 1 and 2
12VDC output
1
12V
Power to external sensor (12VDC power)
Ground connector
1
GND
12VDC ground
Micro SD card slot
1
Micro SD
Expand storage capacity with 2G, 4G or 8G Micro SD card
USB ports
2
USB1, USB2
Connect to a camera or a GPRS modem
Ethernet port, RJ45
1
ETH
Connect to a 10/100 Ethernet port for Web access & SNMP connectivity
Digital input ports
3
DI1, DI2, DI3
Connect digital sensors (one sensor per port)—on/off, dry contact sensors
such as smoke detectors and motion detectors
Liebert SN™ ports
2
RJ45 sensor ports*
Connect Liebert SN sensors for temperature, humidity and other conditions
* See Sensor Port Connections on page 3 for details on connecting sensors to RJ45 sensor ports (excluding Ethernet port).
Status Indicators
Refer to Table 2 for details on the unit’s status indicators: relay outputs, power, alarm and run.
DO1 /DO2
outputs
Power
Alarm
DO1
Power
Alarm
Not Used
DO2
Run
Not Used
Not Used
STATUS INDICATORS
Run
Table 2
Indicator descriptions
Indicator
Status of:
Color
Status - Indicator On / Flashing
Status - Indicator Off
DO1, DO2
Relay outputs
Yellow
On
Off
Relay DO1 or DO2 is closed.
Relay DO1 or DO2 is open.
POWER
Input power
Green
On
Input power is present.
Off
Input power is not present.
ALARM
Alarms
Red
On
An alarm has been detected.
Off
No alarms detected.
RUN
Unit operation
Green
Flashing
Unit is operating normally.
Off
Unit is not running.
2
Sensor Port Connections
The Liebert RDU-S has five sensor ports—three digital input ports and two
Liebert SN sensor ports.
Digital Input Ports DI1, DI2, DI3
Digital
input
ports
DI1-3
The three digital input ports DI1, DI2 and DI3, shown at right, may be used
to connect digital sensors, such as smoke detectors and motion detectors.
Liebert SN ports
Liebert SN Sensor Ports
Connect
one end
of an RJ45
cable to a
Liebert SN
port
The two ports labeled with a Liebert SN icon , shown at right, are designed
for use with Liebert SN sensors. Each sensor is shipped with a cable to
connect to one of the Liebert SN ports on the Liebert RDU-S. You may use
this cable or another standard straight-through cable.
Connect
other end
to sensor
Liebert SN sensors may be connected in a string up to 65.6 ft. (20m) in length.
Each Liebert RDU-S unit can support a maximum of 10 temperature probes,
10 humidity probes, 9 dry contacts and 6 door switches.
Web Interface
A Web interface allows users to browse and view areas monitored by connected sensors, as well as configure
the unit.
DEFAULT
OPENING
VIEW
Monitor tab/
Environmental
subtab
TABLE
VIEW
SN Temp1
SN Hum2
GRAPH
VIEW
SN
SN
SN
SN
SN
SN
3
Temp1
Temp2
Temp3
Temp4
Hum1
Hum2
SN Temp2
SN Temp3
SN Temp4
SN Hum1
Specifications
Input Power Requirements
100-240 VAC 50&60 Hz; 0.5A maximum draw
Dimensions W x D x H, in. (mm)
17.375 x 2.25 x 1.75 (441.3 x 57.2 x 44.5)
Unit Weight - lb. (kg)
2.34 (1.1)
Shipping Weight - lb. (kg)
2.875 (1.3)
Mounting
0U, 1U rack-mount, wall-mount or desktop
Ambient Operating Environment, °F (°C)
41 to 131 (5 to 55); 10-95% RH non-condensing
Communication
Network Interface
HTTP (Web), E-mail, SNMP
Modem
GPRS modem
Agency Listings
FCC, UL and CE
LEDs
Power, Run, Alarm and Digital Outputs
Liebert SN Sensor Ports
2
Temperature, °F (°C), with ranges
-22 to 248 (-30 to 120)
Humidity with ranges
0 to 100% RH
Digital Input Ports
3
Contact closure
Normally Open / Normally Closed
Digital outputs
5A 220VAC/24VDC
Ordering Information
Quantity
Part #
Description
RDU-S
Liebert RDU-S Rack Management Device
AD-IM
Infrared Motion Sensor
AD-S
Smoke Sensor, including Mounting Magnet & Mounting Bracket
AD-SUSBC
Stationary USB Camera
AD-TPUSBC
Tilt & Pan USB Camera, including Tilt & Pan USB Camera Mounting Bracket
AD-GPRSUSBM
USB GPRS Modem
AD-RB
Rack Beacon, including Mounting Magnet & Mounting Bracket
AD-MICROSD8
Liebert RDU-S Micro SD 8G
SN-T
Modular Temperature Sensor
SN-TH
Modular Temperature and Humidity Sensor
SN-2D
Modular Door Contact Sensor
SN-3C
Modular Contact Closure Sensor
SN-Z01
Integrated with Single Temperature Sensor
SN-Z02
Integrated with 3 Temperature Sensors
SN-Z03
Integrated with 3 Temperature Sensors and 1 Humidity Sensor
Liebert Corporation
1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229
Telephone: 1-800-877-9222
Facsimile: 1-614-841-6022
www.liebert.com
© 2010 Liebert Corporation
All rights reserved throughout the world. Specifications subject
to change without notice.
® Liebert is a registered trademark of Liebert Corporation. All
names referred to are trademarks or registered trademarks of
their respective owners.
SL-31315_REV0_07-10
4
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