Dell UPS 3750R - Manual (Page 10)

4 Installation
Installing the EMP
To install the EMP:
1 If you plan to monitor one or two external contact devices, connect external contact closure inputs to
the screw terminals on the EMP (see Figure 3 and Table 1).
NOTE: Contact closure devices can be normally open or normally closed.
Figure 3. Connecting External Contact Devices
Table 1. EMP Screw Terminal Pin Assignment
Device Pin Number Contact Wiring Default Configuration
Device 1 Connection
1 Contact 1 returns
Normally open
2 Contact 1 signal inputs
Device 2 Connection
3 Contact 2 returns
Normally open
4 Contact 2 signal input
Pins
1 2 3 4