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EMP SETUP

EMP SETUP

©Copyright 2014 Eaton, Raleigh NC, USA. All rights reserved. No part of this document may be reproduced in any way without the express written approval of Eaton. • P-164000279 Rev 1 • April 2014

To install and connect the optional EMP to the ePDU (as illustrated on the previous page):

UNPACK AND INSPECT THE EMP

UNPACK AND INSPECT THE EMP

The EMP is an optional accessory that is packaged separately from the ePDU G3. 

Inspect the product before installation. If the product is damaged in any way, see the Service and Support section.

NOTE

: Always use proper lifting and carrying techniques when unpacking and moving equipment packing cartons 

and components.

1. 

Mount the EMP in a convenient location on the rack or on the wall (see illustrations below). Use either the Velcro straps or use the supplied screw and 
screw anchor as follows:

• 

To mount the EMP within the enclosure environment, attach one Velcro fastener to the EMP and the other Velcro fastener to an enclosure rail post. 
Then, press the two Velcro strips together to secure the EMP to the rail post.

• 

To mount the EMP on the wall close to the rack, use the supplied screw and screw anchor. Then, mount the EMP on the screw. (The EMP has a 
universal slot on the rear for mounting the EMP on a screw in any direction.)

2.  Locate the Ethernet cable (supplied). Connect one end of the cable to the RJ-45 connector on the EMP, then connect the other end of the cable to the 

RS-232 connector on the ePDU.

NOTE

: If the supplied cable is not long enough for your installation, you can use another Ethernet cable up to a length of 20m (65.6 ft.).

3.  Use the supplied tie wraps to secure the Ethernet cable out of the way as needed.

Please have the following information ready when you call the Eaton Customer Support Center: 

• Model 

number

• Serial 

number

• 

Symptoms of failure or problem

• Customer 

return 

address

• Contact 

information 

If repair is required, you will be given a Returned Material Authorization (RMA) Number. This number must 
appear on the outside of the package and on the Bill of Lading (if applicable). Use the original packaging or 
request packaging from the Eaton Customer Support Center or distributor. Units damaged in shipment as a 
result of improper packaging are not covered under warranty. A replacement unit will be shipped, freight prepaid 
for all units under warranty.

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2

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SERVICE AND SUPPORT

SERVICE AND SUPPORT

INSTALL AND CONNECT THE EMP TO THE 

INSTALL AND  CONNECT THE  EMP TO THE  e

ePDU

PDU

The optional Environmental Monitoring Probe (EMP) enables you to collect temperature and humidity readings in 
the frame environment and monitor the environmental data remotely. You can also collect and retrieve the status of 
one or two contact devices (user-provided).

You can monitor readings locally using the ePDU G3 LCD menu display. You can monitor readings remotely using a 
Telnet connection or a standard Web browser. This provides greater power management control and flexible moni-
toring options.

The EMP device is delivered with a screw and screw anchor, Velcro fasteners, tie wraps, and a connection cable. 
You can install the device anywhere on the rack or on the wall near the rack. 

For more information, refer to the Eaton Power Distribution Unit (ePDU) G3 Operation Manual. View it online at 
http://eaton.com/ePDUG3.  

DESCRIPTION AND FEATURES

DESCRIPTION AND FEATURES

The EMP has the following features:

• 

The hot-swap feature simplifies installation by enabling you to install the probe safely without turning off 
power to the ePDU or to the loads that are connected to it.

• 

The EMP monitors temperature and humidity information to help you protect critical equipment: 

• 

The EMP measures temperatures from 0°C to 70°C with an accuracy of ±2°C.

• 

 The EMP measures relative humidity from 10% to 90% with an accuracy of ±5%.

• 

The EMP can be located some distance away from the ePDU with a CAT5 network cable up to 20m (65.6 ft) 
long.

• 

The EMP monitors the status of the two user-provided contact devices.

• 

Temperature, humidity, and contact closure status can be displayed through a Web browser, a serial interface, 
or the local ePDU G3 LCD interface.

• 

User-selectable alarm thresholds enable you to define acceptable temperature or humidity limits.

• 

E-mail notification is provided through Simple Mail Transfer Protocol (SMTP) and e-mail client software when 
acceptable alarm limits are exceeded or contact status changes.

• 

Changes in external contact status are logged in the ePDU G3 alarms history log.

• 

When temperature and humidity values exceed user-selectable limits, the event is logged in the ePDU G3 
alarms history log.

CONNECT AN EXTERNAL CONTACT DEVICE TO THE EMP

CONNECT AN EXTERNAL CONTACT DEVICE TO THE EMP

To connect an external device to the EMP:

1. 

Connect the external contact closure inputs to the terminal block on the EMP (see the table and the figure below):

• 

External contact device 1.

 Connect the return and signal input wires from device 1 to screw terminals 1 and 2. 

• 

External contact device 2.

 Connect the return and signal input wires from device 2 to screw terminals 3 and 4. 

2.  Tighten the corresponding tightening screws on top of the EMP to secure the wires.

NOTE

: External contact devices can be normally open (NO) or normally closed (NC).

NOTE: 

 On startup, the ePDU automatically recognizes the EMP. For more detailed information, refer to the Eaton Enclosure Power Distribution Unit (ePDU) G3 

Operation Manual at http://eaton.com/ePDUG3.

Wall Mounted EMP (using the screw)

Rack Mounted EMP (using Velcro)

Device

Terminal 

Number

Normally Open or Normally Closed

External Contact Device 1 

Connection

1

Contact 1 Return

Normally Closed

2

Contact 1 Signal Inputs

Normally Open

External Contact Device 2 

Connection

3

Contact 2 Return

Normally Closed

4

Contact 2 Signal Inputs

Normally Open

External
Contact
Device 1

External
Contact
Device 2

For questions or problems, please call your local distributor or the Eaton Customer Support Center at one of the 
following telephone numbers and ask for an EMP ePDU G3 technical representative:

• United 

States: 

1.800.356.5737

• 

All other countries: Contact your local service representative.

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