Allen-Bradley 1771-IT

Connecting Wiring to the Input Module
Connections to the input module are made to the 10 terminal field wiring arm (cat. no. 1771-WA) shipped with the module (Figure 1). Attach the wiring arm to the pivot bar on the bottom of the I/O chassis. The wiring arm pivots upward and connects with the module so you can install or remove the module without disconnecting the wires.

Important: You can use a DC Output Driver Module (cat. no. 1771-OB) to directly drive terminals on a Fast Response DC Input Module (cat. no. 1771-IT) (Figure 2). Use the same dc power source to power both modules to ensure that common is at the same potential.

Use this module with devices that benefit from very short delay times, such as:
- photoelectric switches
- incremental encoders
- dc proximity switches