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      1791-32A0

      Discrete I/O block

      Product Information

      Product Describe

      discrete I/O block

      This module features Thirty-Two (32)

      120VAC input channels in Four (4)

      groups of Eight (8) channels each.


      • Manufacturer:
        Allen-Bradley
      • Product Category:
        PLC System
      • Spare Part Number:
        1791-32AO, 1791-32A0/A, 1791-32A0/B
      • Estimated shipping dimensions:
        17.8 cm x 12.7 cm x 12.7 cm
      • Weight:
        0.9 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        USA
      • Place of shipment:
        Xiamen, Fujian, China
      • Product Line:
        1791 Block I/O
      • No. of Inputs:
        Thirty-Two (32) Inputs
      • No. of groups:
        Four (4) input groups
      • No. of channels per group:
        Eight (8)
      • Nominal input current:
        11 mA
      • Input voltage:
        120VAC
      • ON state voltage range:
        79-132VAC, 47-63 Hz.
      • Stock:
        30
      By purchasing this item, you agree to the Terms & Conditions
      Moore Automated is NOT an authorized distributor of Allen-Bradley
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          FAQ

          • What is the primary functional purpose of 1791-32A0 within Allen-Bradley distributed I/O architectures?
            The 1791-32A0 is a distributed digital input/output ArmorBlock® I/O module designed to provide ruggedized, machine-level signal acquisition and control. By decentralizing I/O closer to field devices, 1791-32A0 minimizes wiring complexity, reduces cabinet space requirements, and enhances overall system responsiveness.
          • How does 1791-32A0 configure its I/O density to support high-channel-count applications?
            The 1791-32A0 offers a total of 32 discrete I/O points, typically configurable as 32 digital inputs, enabling high-density signal processing within a compact, block-mounted form factor. This configuration makes 1791-32A0 ideal for applications requiring extensive sensor interfacing at the machine level.
          • What electrical input characteristics define the signal compatibility of 1791-32A0?
            The 1791-32A0 is engineered for 24 V DC discrete signals, with input voltage thresholds compliant with IEC standards for industrial digital inputs. This ensures reliable detection of field devices such as proximity sensors, photoelectric sensors, and limit switches operating within standard control voltage ranges.
          • Which communication protocol does 1791-32A0 utilize to integrate into Allen-Bradley control systems?
            The 1791-32A0 communicates via Remote I/O (RIO), enabling deterministic cyclic data exchange with Allen-Bradley PLC platforms such as PLC-5 and SLC systems. This protocol ensures predictable update times and robust communication in legacy and hybrid automation environments.
          • How does 1791-32A0 enhance installation efficiency compared to traditional panel-based I/O modules?
            The 1791-32A0 features a machine-mounted ArmorBlock design with integrated quick-disconnect connectors, allowing direct installation on equipment frames or production machinery. This architecture significantly reduces home-run wiring, lowers installation labor costs, and simplifies commissioning.

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