Dell PowerEdge UPS 500T JY9T4 Environmental Probe (EMP) User’s Guide - Page 10

Installing the EMP, Connecting External Contact Devices, Table 1.

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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. Pins 123 4 Figure 3. Connecting External Contact Devices Table 1. EMP Screw Terminal Pin Assignment Device Device 1 Connection Device 2 Connection Pin Number 1 2 3 4 Contact Wiring Contact 1 returns Contact 1 signal inputs Contact 2 returns Contact 2 signal input Default Configuration Normally open Normally open 4 Installation

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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
1234