Allen-Bradley 1791DS-IB16 Guard I/O Safety Input Module

Technical Specifications Breakdown

Key parameters for the 1791DS-IB16 are listed below for quick reference:

Industry Applications

Safety Monitoring in Manufacturing Lines

Connect the 1791DS-IB16 to emergency stop buttons and light curtains in assembly lines. Its 16 single-channel inputs allow centralized monitoring of multiple safety devices, reducing wiring costs and improving response times.

Cost-Effective Machine Guarding

Use the module to monitor guard door switches in packaging or material handling equipment. The electronic short circuit protection prevents costly damage to the module, extending service life and lowering replacement expenses.

Integration with DeviceNet Networks

As a CompactBlock Guard I/O DeviceNet module, the 1791DS-IB16 communicates efficiently over DeviceNet, reducing installation complexity and cabling costs compared to point-to-point wiring.

Installation & Setup Guidance

Mount the module on a DIN rail in a dry, ventilated enclosure (IP20). Connect 24V DC power within the 20.4-26.4V DC range. Wire each single-channel input to a safety device (e.g., E-stop, interlock). Use the DeviceNet connector for network communication. Configure the module using RSNetWorx for DeviceNet; lock and password-protect the configuration for security. Verify on-state input voltage (11V DC min.) and off-state voltage (5V DC max.) with a multimeter.

Maintenance & Reliability

Inspect the module quarterly for dust accumulation and loose connections. Clean the enclosure with a dry cloth; do not use solvents. Monitor power consumption (85 mA @ 24V dc) to detect early signs of failure. The electronic short circuit protection reduces the need for frequent fuse replacements.

Cost-Efficient Safety Input Module for Industrial Automation

The Allen-Bradley 1791DS-IB16 is a safety input module from the Guard I/O 1791ES and 1791DS series, designed to reduce total cost of ownership in safety-critical applications. With 16 single-channel inputs and electronic short circuit protection, this module minimizes downtime by detecting faults before they cause damage. Its operating voltage range of 20.4-26.4V DC ensures stable performance, while the IP20-rated enclosure protects against dust and accidental contact. Weighing only 0.45 kg, it simplifies installation and reduces structural load on cabinets.

Compatibility & Integration

The 1791DS-IB16 integrates with Allen-Bradley Guard I/O 1791ES and 1791DS series components. It supports single-channel and dual-channel safety devices on inputs. The DeviceNet interface allows seamless connection to PLCs and safety controllers. No outputs are provided; use separate output modules for actuator control.

Selection Guide & Purchasing Advice

When selecting the 1791DS-IB16, verify your system voltage (20.4-26.4V DC) and input count (16 single-channel). For applications requiring dual-channel inputs, consider other models in the Guard I/O series. AutoDCSTech stocks this module with fast shipping and competitive pricing. Please verify current lifecycle status and availability with AutoDCSTech before ordering.

Troubleshooting & Common Issues

If the module fails to power on, check the 24V DC supply voltage (must be 20.4-26.4V DC). If inputs do not register, measure on-state voltage (minimum 11V DC) and off-state voltage (maximum 5V DC). For network communication errors, verify DeviceNet termination and cable integrity. Do not disassemble the module; contact AutoDCSTech for support.