User manual
2638A 
Users Manual 
3-6 
Input Wiring Instructions 
Use the procedure below and refer to Figure 3-1 for instructions on how to wire a 2-wire, 
3-wire, or 4-wire input to the Input Module. 
WXWarning 
To prevent possible electrical shock, fire, or personal injury, 
read the Wiring Safety and Considerations section on page 3-2. 
1.  Power off the Product with the main power switch. 
2.  Squeeze together the release tabs located on both sides of the Input Module then pull 
the module out of the Product. 
3.  Use a straight-head screw driver to rotate the cover locks to the unlock position then 
open the cover. 
W Caution 
To prevent damage to the module, never turn the cover locks 
more than quarter of a turn. 
4.  Connect the positive source wire to the H terminal and the negative source wire to the 
L terminal. For 3-wire and 4-wire sense connections, connect the sense wires to the 
terminals directly across from the source wires. See “Sense Input Configuration” on 
page 3-3. 
5.  Route the wires through the strain-relief pins then out the back of the Input Module. 
If necessary, the rubber wire compressor used to secure the wires can be removed for 
more room. 
6.  Close the Input Module cover and rotate the cover locks to the locked position. 
7.  Align the Input Module on the guide rails and carefully slide the module into the 
connector at the rear of the Product until it latches in place. 
8.  Power on the Product with the main power switch. After powered on, the Product 
tests the connection to the Input Module. If the Input Module is recognized, the 
module indicator changes to green and shows all channels available on the left side of 
the Channel Setup menu as shown in Figure 3-3. If the module indicator does not 
turn green, refer to the troubleshooting information in Chapter 4.  
9.  Configure the channel. For instructions on how to configure the various input types, 
see “Channel Configuration” on page 3-7. 










