Repair Allen-Bradley 1771-IA PLC-5 Discrete Input Module
8 inputs per module.
Remanufactured
-
2 in stock
- 1771-IAREP
Overview
Features
- Nominal input voltage:
- 120VAC @ 47 to 63Hz
- 125VDC
- Nominal input current:
- 4.5mA @ 87VAC
- 5.0mA @ 92VAC
- 12.0mA @ 138VAC
- 7.4mA @ 125VDC
- On-state voltage range
- 87VAC to 138VAC
- 97VDC to 138VDC
- Max. off-state voltage:
- 46VAC peak
- 57VDC
- Max. off-state current:
- 2.8mA AC peak or DC
- 0.4 to 10.7W power dissipation
- 1.4 to 36.5 BTU/hr thermal dissipation
- 75mA backplane current
- 1kVAC rms opto-electrical isolation
Description
The Allen-Bradley 1771-IA PLC-5 Discrete Input Module contains input filtering the limit the effects of voltage transients caused by contact bounce and/or radiated electrical noise. The delay due to filtering is nominally 24ms (+/-10ms) for turning AC inputs on or off, and 10ms (+/-4ms) for turning DC inputs on, 20ms (+/-9ms) for turning DC inputs off. The module is designed to operate with AC proximity switches such as Allen-Bradley Bulletin 871P and other input devices with an off-state leakage current less than 2.8mA.
The 1771-IA receives power through the 1771 I/O chassis backplane from the chassis power supply. The module requires 75mA from the output of the supply. Add this to the requirements of all other modules in the I/O chassis to prevent overloading the chassis backplane and/or backplane power supply.
The module circuit board is slotted in two places n the rear edge. The position of the keying bands on the backplane connector must correspond to these slots to allow insertion of the module. Any connector can be keyed in an I/O chassis to receive the module except for the left-most slot reserved for adapter or processor modules.
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