Allen-Bradley 1791-16BC Block I/O Module - 16 Input/Output

Allen-Bradley 1791-16BC: 32-Point DC Block I/O Module

Core Technical Specifications

• Brand: Allen-Bradley
• Model: 1791-16BC
• Product Type: Block I/O Module
• I/O Configuration: 16 Inputs + 16 Outputs
• I/O Voltage Range: 10-30 VDC
• External Power Requirement: 19.2-30 VDC, 300 mA
• Input On-State Current: 11mA @ 30V max.
• Input Off-State Voltage: 5 VDC max.
• Maximum Power Dissipation: 17.8 Watts
• Mounting: Vertical or Horizontal
• Weight: 2.25 lbs (1.02 kg)
• Physical Dimensions: 6.95"H × 4.35"W × 3.85"D

Installation & Environmental Requirements

• Ensure a minimum of 2 inches of clearance on all sides of the module for proper airflow and cooling.
• You can mount the 1791-16BC in either vertical or horizontal orientation to suit your panel layout.
• Connect modules in a daisy-chain topology to build your Remote I/O network efficiently.
• This module must be installed inside a protective enclosure rated for your specific industrial environment.
• The enclosure should guard against contaminants like dust, oil, water, and chemical exposure.
• The module features internal fusing for the power input, eliminating the need for external fuses on that circuit.

Performance Details & Compatibility

• The module operates as a Remote I/O adapter, requiring communication with an RIO scanner in your PLC system.
• It supports selectable baud rates from 57.6K to 230.4K for network communication.
• Maximum network distance is 10,000 ft at 57.6K, 5,000 ft at 115.2K, and 2,500 ft at 230.4K baud.
• The 1791-16BC is fully compatible with Allen-Bradley PLC-2, PLC-3, PLC-5, and SLC 500 controllers.
• Output current rating varies with mounting and temperature: Vertical mount offers 500mA (60°C) up to 1A (30°C).
• Horizontal mount offers 250mA (60°C) up to 500mA (30°C).
• It can handle short surge currents up to 3 Amps for 50 milliseconds.
• Important: The individual output channels are not internally fused; consider external protection for connected loads.

Packaging & Shipping Information

• Every 1791-16BC module is supplied as 100% new and in original factory packaging.
• We stock this item for quick order fulfillment directly from our warehouse.
• Orders are processed and typically shipped within 3 to 5 business days.
• We deliver worldwide using reliable express services like DHL, FedEx, and UPS.
• Your purchase is backed by our 30-day return policy for a risk-free buying experience.

Frequently Asked Questions (FAQ)

• How does the 1791-16BC differ from the 1791-16B0 model?
  The key difference is I/O count: The 1791-16BC provides both 16 inputs and 16 outputs, while the 1791-16B0 is an input-only module with 16 channels.
• Which Allen-Bradley PLCs can communicate with this module?
  The 1791-16BC is designed to work seamlessly with PLC-2, PLC-3, PLC-5, and SLC 500 series programmable controllers.
• Is external fusing required for this Block I/O module?
  No external fuse is needed for the main power input, as it is internally protected. However, we recommend external protection for the output circuits as they are not fused internally.
• Do you have the 1791-16BC in stock, and how fast do you ship?
  Yes, we maintain stock for fast delivery. Orders are packed and shipped within 3-5 business days via major global carriers.
• What is your return policy if the module doesn't fit my application?
  We offer a straightforward 30-day return period from the date of purchase for your complete peace of mind.

© 2026 NexAuto Technology Limited. All rights reserved.
Original Source: https://www.nex-auto.com/
Contact: sales@nex-auto.com
Phone: +86 153 9242 9628