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Allen Bradley PLC 5 1771-IA2
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1771-IA2

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Allen Bradley PLC 5 Digital Input Module, Voltage Rating 120 Volts AC/DC, Intended For Use With AC/DC Proximity Switches

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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Technical specifications for 1771-IA2

ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.1771-IA2
Module TypeDigital Input Module
Voltage Rating120 Volts AC/DC
Intended For Use WithAC/DC Proximity Switches
Wiring Arm1771-WA
DC Operating Voltage97-138 Volts
Backplane Current75 Miliamperes
Max AC Off-State Current2.8 Miliamperes
Max DC Off-State Current2.8 Miliamperes
Typical AC Signal Delay (On)24 (+/- 10) ms
Typical DC Signal Delay (On)10 (+/- 4) ms
Typical AC Signal Delay (Off)24 (+/- 10) ms
Typical DC Signal Delay (Off)20 (+/- 9) ms
Dimensions3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm)
Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

The Allen-Bradley 1771-IA2 is a PLC 5 Digital AC/DC Input Module. It converts AC signals provided by user devices to the logic level needed by the processor. It directly controls the state of corresponding bits in the PLC data table. It contains various input devices such as pushbuttons, limit switches, pilot lights, motor starters, and annunciators to interface with on/off sensors and actuators. It provides a modular design with space-saving and pocket-friendly means to add input to a PLC control system. It comes with a 1771-WA wiring arm to replace the module, eliminating the need to disconnect wiring. It is a series A module and supports ½, 1, and 2-slot I/O addressing. It has applications with AC/DC proximity switches. The 1771-IA2 module has 8 inputs with a 120V AC/DC voltage category. It has an operating voltage range of 87 - 138V AC or 97 - 138V DC. It has a typical signal delay of 24ms (±10) at on/off AC state and 10ms (±4) at on and 20ms (±9) at off DC state. It has a maximum off-state current of 2.8mA and a backplane current load of 75mA. It has a maximum power dissipation of 10.7W and thermal dissipation of 36.5 BTU/hr. It is installed in a 1771 I/O chassis containing a PLC processor. Keying bands for putting it in the right slot are between pins 10 and 12 for the upper connector and between pins 4 and 6 for the lower connector. The 1771-IA2 module has 8 orange status indicators for field-side indication at the front panel. It contains optoelectrical isolation to protect the system circuits from electrical transients. It also contains input filtering feature to reduce electrical noise.

Revision Part #Also known as
1771-IA2 Ser A1771-IA2/A, Series A, Rev A
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