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Allen-Bradley 1791-8BR Block I/O Module

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  • Dobavljač:

    Allen-Bradley

  • Vrsta:

    I/O Module

  • Tags I/o module

O proizvodu

Product Overview: Allen-Bradley 1791-8BR Block I/O Module

Key Technical Specifications

  • Brand: Allen-Bradley
  • Model: 1791-8BR
  • Series: 1791 Block I/O
  • Module Type: Combination Input / Relay Output Module
  • Input Channels: 8 Points, 24VDC Sinking
  • Output Channels: 8 Points, Dry Contact (Form A) Relay
  • Input Voltage Range: 10-30 VDC
  • Relay Contact Rating: 1A Resistive Max. (20-30VDC / 20-132VAC)
  • Module Power Supply: 19.2–30 VDC External
  • Communication Protocol: Remote I/O (RIO)
  • Weight: 1.00 lb (0.45 kg)

Input & Output Characteristics

  • The eight DC inputs require an on-state voltage between 10-30 VDC to activate.
  • Each input draws a maximum of 11 mA at 30V when on.
  • The output channels feature Normally Open (N.O.) dry contacts.
  • Relay outputs are highly flexible, switching both AC and DC loads.
  • The maximum resistive load rating is 1A at 20-30 VDC or 20-132 VAC.
  • Always use external fusing for output circuits, as the module lacks internal load protection.

Installation & Wiring

  • Mount the module vertically or horizontally on a standard DIN rail.
  • Connect the 24VDC external power to terminals +24 (1) and RET +24 (3).
  • Terminal GND (2) is for chassis ground connection.
  • Use terminals BLU (6), SHD (7), and CLR (8) for the RIO network communication cable.
  • For signal wiring, use a maximum of 14 AWG stranded wire.

Frequently Asked Questions (FAQ)

  • Q: Is the 1791-8BR a relay output module?
    A: Yes. It has 8 dry contact relay outputs that can switch both AC and DC voltages.
  • Q: What controllers is this module compatible with?
    A: It is compatible with Allen-Bradley PLC-2, PLC-3, PLC-5, and SLC 500 controllers via RIO.
  • Q: Does the module include internal fuses for protection?
    A: No. You must install external fuses to protect the output circuits and connected loads.
  • Q: What is the switching capacity of the relay contacts?
    A: The relay contacts are rated for a maximum of 1 Amp resistive load.
  • Q: Do you have the 1791-8BR in stock?
    A: Yes, we maintain stock for quick shipment, typically within 5 business days.
  • Q: What is your return policy?
    A: We offer a straightforward 30-day return policy for all products.

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Original Source: https://www.nex-auto.com/
Contact: sales@nex-auto.com | Phone: +86 153 9242 9628

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