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1771-IA Allen-Bradley

Original price $450.00 - Original price $450.00
Original price
$450.00
$450.00 - $450.00
Current price $450.00
Surplus - Tested (With Warranty)
Need a Specific Revision?
$450.00
2 in stock
New / Open-Box Surplus
Need a Specific Revision?
$450.00
2 in stock
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Product Details

Description · Specifications · Product Overview

Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.

Product Overview

The 1771-IA is an 8-point digital input module for the Allen-Bradley PLC-5 system. It interfaces 120 VAC or 125 VDC discrete field signals to the PLC backplane. The module installs in a 1771 I/O chassis and is used to monitor on/off field devices such as limit switches or sensor contacts. Part number 1771-IA processes input signals and communicates status to the PLC processor via chassis backplane.

Best Suited For

  • PLC-5 legacy systems
  • Monitoring of 120 VAC/125 VDC discrete inputs
  • Integration with ac proximity sensors (e.g., Allen-Bradley 871P)
  • Field-side indication applications
Inputs
8
Operating voltage
87-138 V AC; 97-138 V DC
Backplane current draw
75 mA
Power dissipation
10.7 W
Typical signal delay (AC on)
24 ms (±10 ms)

Technical Specifications

I/O & Electrical

Number of channels
8
Operating voltage AC
87-138 V AC
Operating voltage DC
97-138 V DC
Max off-state current
2.8 mA
Typical input delay (AC on)
24 ms (±10 ms)
Typical input delay (DC on)
10 ms (±4 ms)
Typical input delay (DC off)
20 ms (±9 ms)

Communication & Power

Backplane current draw
75 mA
Power dissipation
10.7 W
Thermal dissipation
36.5 BTU/hr

Physical & Environmental

Status indicators
8 orange LEDs
Mounting
1771 I/O chassis slot

Certifications

UL ListedCSA certifiedCSA Class I, Division 2, Groups A, B, C, DCE marked

1-Year Warranty

Every tested unit is backed by our free 1-year PLC Department warranty, direct from us.

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Free ground shipping. Orders by 1 PM CST ship same-day, with overnight available.

USA Stock

Sourced and shipped from Texas, USA. Never anonymous overseas marketplace stock.

30-Day Returns

Hassle-free RMA. If the part is not right for your application, send it back within 30 days.

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Rockwell Automation documentation

Access official manuals, datasheets, and lifecycle information for this part directly from Rockwell Automation.

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Must Read: Disclaimer

PLC Department sells surplus and refurbished industrial automation products, including but not limited to programmable logic controllers (PLCs), which are sourced exclusively through independent third-party channels. PLC Department is not an authorized distributor, reseller, or representative of any manufacturer listed on this website, including Rockwell Automation or its Allen-Bradley brand. All product warranties, where offered, are provided solely by PLC Department and not by the original manufacturer.

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The products offered for sale may be used or surplus and may contain older date codes, be of earlier series or versions, or differ in appearance or features compared to products available through factory-authorized distribution channels. The presence, version, or functionality of firmware, if any, on programmable devices such as Allen-Bradley PLCs is not guaranteed. PLC Department makes no representation or warranty regarding:

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