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1771-IA2
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Other Available Revisions for the 1771-IA2 1771-IA2//A
Common misspellings:
- l771-IA2
- 177l-IA2
- 1771-1A2
- 1771-lA2
- 1771IA2
The Allen-Bradley 1771-IA2 is a PLC5 digital AC/DC input module. This 1771-IA2 converts AC signals that are provided by the user devices to logic level signals that are required for processing by the processor system. The 1771-IA2 input module is designed to control the state of bits in the PLC data table and designed to be an input module of the 1771-IA series, it has various input devices that let it interface with the motor’s on/off sensors and actuators. The devices it controls include the pushbuttons, limit switches, pilot lights, motor starters, and annunciators.
The 1771-IA2 input module package comes with a 1771-WA wiring arm for facilitating the process of replacing modules without the need to disconnect the wiring system in the controller module. In addition, as a module in the A series, the 1771-IA2 input module supports ½, 1, and 2-slot I/O addressing, and it has applications that use the AC/DC proximity switches.
The 1771-IA2 input module has 8 inputs and an 120V AC/DC voltage category. The 1771-IA2 module’s operating voltage range is 87-138V AC, its AC signal delay is 24ms in the On and Off AC states, 10ms in the On state, and it is 20ms when it is in the DC Off state. The maximum Off state current for the 1771-IA2 is 2.8mA and its backplane current load is 75mA. The 1771-IA2 input module has additional protection features which include the opto-electrical isolation for protecting the module’s circuit system from electrical transients and there is also the input filter that reduces the module’s electrical noise.
