1797-BIC PLC Module for Zone 1 Hazardous Environments

Availability: 20 left in stock

Product Overview The Allen-Bradley 1797-BIC serves as the critical communication bridge between standard control environments and intrinsically safe zones. As a high-performance...

SKU: 1797-BIC

Manufacturer: Allen Bradley
Product No.: 1797-BIC
Product Type: FLEX Ex I/O
Product Origin: USA
Payment:T/T, Western Union
Weight: 850g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen-Bradley 1797-BIC serves as the critical communication bridge between standard control environments and intrinsically safe zones. As a high-performance Bus Isolator, it provides the necessary galvanic isolation to extend the FLEXbus backplane into hazardous locations (Zone 1/2). This module ensures that electrical energy remains below ignition thresholds, protecting volatile atmospheres while maintaining seamless data flow to your PLC architecture.

Condition Note: We supply this component in 100% Brand New, original factory condition to ensure maximum lifecycle longevity for your critical systems.

Technical Specifications

The 1797-BIC maintains rigorous safety parameters to meet CENELEC, FM, and cULus standards.

Feature	Specification
Input Voltage Range	18–32V DC
Current Consumption	150 mA @ 24V DC
Power Dissipation	2.1 W (7.2 BTU/hr)
Module Support	Drives up to 8 FLEX Ex I/O modules
Isolation Type	Galvanic to DIN EN 60079-11
IS Output (CENELEC)	Uo < 5.75V DC, Io < 400 mA, Po < 2.05 W
Conductor Size	4 mm² (12 AWG) stranded max
Operating Temp	–20°C to +70°C (–4°F to +158°F)
Mounting	Horizontal or Vertical DIN Rail

Engineering Advantages

The 1797-BIC solves specific integration challenges in complex process plants:

Hazardous Zone Transition: This module eliminates the need for bulky, expensive explosion-proof enclosures by utilizing intrinsic safety (IS) principles. It allows you to mount I/O closer to sensors in Zone 1 environments.
Galvanic Separation: High-quality internal circuitry prevents ground loops and protects the "safe area" control hardware from faults occurring in the field.
Space Efficiency: The slim DIN-rail design integrates directly with the FLEX I/O stack, reducing the footprint compared to traditional isolation barriers.
Robust Connectivity: Supports specialized 1794-CE1 and 1794-CE3 cables, ensuring high-integrity bus extension even in high-vibration or electrically noisy industrial settings.

FAQs

Can I use the 1797-BIC to connect standard 1794 FLEX I/O modules?

No. The 1797-BIC specifically interfaces with 1797 FLEX Ex modules. It acts as the "gatekeeper" between the non-hazardous power source and the intrinsically safe field modules.
What happens if the power supply exceeds 32V DC?

The module operates strictly within an 18-32V DC window. Exceeding these limits risks tripping internal protection or compromising the intrinsic safety rating. Always use a regulated 24V DC power supply.
Does this module require a specific mounting orientation?

While it supports DIN rail mounting, you must ensure adequate thermal dissipation. In high-temperature environments, horizontal mounting provides the best airflow to maintain the 70°C peak operating rating.
How many field modules can a single 1797-BIC drive?

A single isolator supports a maximum of eight (8) FLEX Ex I/O modules. If your rack exceeds this, you must implement an additional isolator to maintain signal integrity and safety compliance.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.