Installation
Eaton Advanced ePDU User’s Guide P-164000042—Rev 1
www.eaton.com/ePDU
23
Installing an Optional EMP
You can purchase an optional EMP to monitor temperature and humidity around the ePDU and to monitor the
status of up to two contact devices.
To install the optional EMP:
1.
Locate the EMP.
2.
If you plan to monitor one or two external contact devices, connect the external contact inputs to the
screw terminals on the EMP, as described in Figure 18 and Table 3.
Figure 18. EMP Screw Terminals
3.
Locate the EMP Ethernet cable. 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. See Figure 19.
Figure 19. Connecting the EMP
NOTE
You can install an optional EMP now or after completing the ePDU
installation and startup. An EMP can be installed without turning off power
to the ePDU or the devices connected to it.
Table 3. EMP Screw Terminal Assignment
Pin Number
Description
Normally Open/Normally Closed
1
Contact 1 returns
Normally closed
2
Contact 1 signal inputs
Normally open
3
Contact 2 returns
Normally closed
4
Contact 2 signal inputs
Normally open
NOTE
Connect external contact device 1 between pins 1 and 2 (labeled as device
1
). Connect external contact device 2 between pins 3
and 4 (labeled as device
2
). External contact devices can be normally open or normally closed.
