Product Details
Product Overview
The Allen Bradley 1791DS-IB16 functions as a high-integrity safety input module within the CompactBlock™ Guard I/O™ family. This module interfaces directly with DeviceNet™ Safety networks, providing 16 dedicated safety inputs for monitoring critical field devices such as E-stop buttons, light curtains, and safety gates. It distributes safety-rated digital input data to GuardLogix® or SmartGuard™ controllers. We supply this unit as 100% brand new and original, ensuring your safety circuits comply with the highest SIL and Cat. performance ratings.
Technical Specifications
The 1791DS-IB16 utilizes a specialized hardware architecture to execute safety-critical logic:
| Feature | Specification |
| Number of Inputs | 16 Safety Inputs |
| Input Type | Single-Channel (Configurable for Dual-Channel) |
| Network Protocol | DeviceNet Safety |
| Operating Voltage Range | 20.4–26.4V DC |
| Power Consumption | 85 mA @ 24V DC |
| On-State Voltage | 11V DC Minimum |
| Off-State Voltage | 5V DC Maximum |
| Number of Outputs | 0 (Input Only Module) |
| Weight | 1.00 lbs (0.45 kg) |
| UPC | 612598336050 |
Engineering Advantages
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SIL 3 / PLe Rated Monitoring: The 1791DS-IB16 supports safety applications up to SIL 3 (IEC 61508) and PLe (ISO 13849-1). This allows for integration into high-risk machinery zones where functional safety is a mechanical and legal requirement.
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DeviceNet Safety Integration: The module utilizes the CIP Safety™ protocol over DeviceNet. This enables the transmission of safety and standard control data over a single wire pair, significantly reducing wiring complexity and material costs in distributed safety architectures.
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On-Board Pulse Testing: The module generates test pulses to detect short circuits to external power sources or adjacent channels. This self-diagnostic capability ensures the system identifies wiring faults before they compromise the safety function.
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Compact Block Form Factor: The space-saving design fits into shallow control cabinets. The integrated terminal blocks allow for direct field-device termination, eliminating the need for interposing terminal strips and simplifying the troubleshooting process.
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Flexible Input Configuration: Engineers configure the 16 inputs as individual single-channel points or as 8 dual-channel pairs for applications requiring redundant safety monitoring.
FAQs
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Does the 1791DS-IB16 require a safety controller?
Yes. This module acts as a remote safety I/O device. It must communicate with a safety master, such as an Allen Bradley GuardLogix controller or a SmartGuard 600 controller, via a DeviceNet Safety network.
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Is this product a brand new Allen Bradley original?
Absolutely. We guarantee that every 1791DS-IB16 unit we ship is 100% brand new in original factory-sealed packaging. Each module meets the strict E-E-A-T industrial procurement standards.
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What is the significance of the 11V DC On-State voltage?
The 11V DC threshold defines the minimum voltage the module recognizes as a "High" signal. This specific tolerance ensures stable operation in environments with potential voltage sags, preventing nuisance safety trips.
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Can I monitor dual-channel light curtains with this module?
Yes. You can pair the inputs in the software configuration to support dual-channel safety devices. This configuration allows the module to perform cross-channel monitoring to detect discrepancies between the two signals.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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