Honeywell 900C73R-0100-44 HC900 Redundant I/O Scanner

The Honeywell 900C73R-0100-44 Redundant I/O Scanner is a critical component of the HC900 Process and Safety Controller platform. Designed for high-availability industrial automation systems, it facilitates robust and redundant communication between the controller and remote I/O racks. Featuring dual Ethernet ports and hot-swappable capabilities, this scanner ensures seamless failover and uninterrupted process control. With support for remote I/O modules over Ethernet, this module plays a central role in distributed, scalable, and mission-critical applications where downtime is not an option.

Technical Specifications

Product Applications

• Chemical Processing Plants – for managing redundant control and monitoring of hazardous processes.

• Pharmaceutical Manufacturing – where compliance and system continuity are crucial.

• Food & Beverage Automation – enabling continuous production with minimized risk of system failure.

• Oil and Gas Operations – in distributed control systems requiring high-availability architectures.

• Power Generation and Utilities – ensuring reliable performance of distributed I/O networks.

• Water Treatment Plants – for scalable and fault-tolerant process control.

Product Advantages

• Redundant Communication Architecture

  With dual Ethernet ports, the scanner enables two independent communication paths to ensure I/O communication is uninterrupted even in the event of a single-point failure.

• Hot-Swappable Design

  The module can be inserted or removed without powering down the system, significantly reducing maintenance downtime.

• Scalable System Integration

  Ideal for large and distributed installations with support for multiple remote I/O racks and a wide variety of I/O modules.

• Industrial Durability

  Built to withstand temperature fluctuations, mechanical vibration, and electrical noise common in industrial settings.

• Seamless Integration with HC900

  Fully compatible with HC900 systems and controllers, ensuring plug-and-play operation with minimal configuration overhead.

• Improved Diagnostics and Monitoring

  Features LED indicators and error detection tools for enhanced operational visibility and rapid troubleshooting.

Frequently Asked Questions (FAQ)

1. What is the function of the 900C73R-0100-44 module?

   It acts as a redundant I/O communication interface between the HC900 controller and distributed I/O racks.

2. Is this module hot-swappable?

   Yes, it supports hot-swapping, allowing for maintenance without shutting down the system.

3. What type of Ethernet connection does it use?

   It uses 100BASE-TX Ethernet via two RJ45 ports for redundant communication paths.

4. Can this module operate in harsh environments?

   Yes, it is designed to tolerate high vibration, shock, and industrial temperature ranges.

5. Does it support remote diagnostics?

   Yes, it includes built-in diagnostics and LED indicators for monitoring status and communication errors.

6. What I/O types are compatible?

   The scanner supports all standard HC900 remote I/O modules, including analog, digital, and thermocouple inputs/outputs.

7. What is the maximum distance for remote I/O?

   With standard Ethernet, typical cable length between the scanner and remote I/O is up to 100 meters.

8. How is power supplied to this module?

   Power is provided through the HC900 I/O rack backplane at 5 VDC.

9. Can this module be used with non-Honeywell controllers?

   No, it is specifically designed for use with Honeywell HC900 systems.

10. How many remote racks can be connected?

    The system supports multiple remote racks depending on the controller configuration, typically up to 127 modules total.