InstallationEaton Advanced ePDU User’s Guide P-164000042—Rev 1 www.eaton.com/ePDU 23Installing an Optional EMPYou can purchase an optional EMP to monitor temperature and humidity around the ePDU and to monitor thestatus 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 thescrew terminals on the EMP, as described in Figure 18 and Table 3.Figure 18. EMP Screw Terminals3. Locate the EMP Ethernet cable. Connect one end of the cable to the RJ-45 connector on the EMP, thenconnect the other end of the cable to the RS-232 connector on the ePDU. See Figure 19.Figure 19. Connecting the EMPNOTE You can install an optional EMP now or after completing the ePDUinstallation and startup. An EMP can be installed without turning off powerto the ePDU or the devices connected to it.Table 3. EMP Screw Terminal AssignmentPin Number Description Normally Open/Normally Closed1 Contact 1 returns Normally closed2 Contact 1 signal inputs Normally open3 Contact 2 returns Normally closed4 Contact 2 signal inputs Normally openNOTE Connect external contact device 1 between pins 1 and 2 (labeled as device 1). Connect external contact device 2 between pins 3and 4 (labeled as device 2). External contact devices can be normally open or normally closed.
