Allen-Bradley 1771-OAB

You can use an output of the 1771-OA module to drive an input of a 120V AC input module (1771-IA, -IA2, -ID and -IAD) to indicate status, such as the turning on a motor starter. However, you must add an external resistor between the output terminal and the common (L2) . Typically, this is a 2.5K ohm, 10W resistor.

The module has eight neon status indicators that show the state of each output. These indicators light when their corresponding outputs are energized. The module also has an indicator that displays a blown-fuse condition at the respective output regardless of the state of the output. This indicator is driven by your field device power supply.

Technical specifications:

Output per module: 8
Module location: 1771 I/O chasis
Output voltage: 92 to 138 ac @ 47 - 63 Hz
Output current rating: 1.5 per output - not to exceed 6A per module.