New Original Stock Honeywell 900C73R-0100-44 Redundant I/O Scanner Module

Product Details

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FAQs

Q1: What is the primary function of the 900C73R-0100-44?
A: It acts as a redundant I/O scanner, connecting the HC900 CPU to distributed I/O racks via dual Ethernet ports. It manages data acquisition from field devices and ensures reliable communication between the controller and remote I/O infrastructure.

Q2: Does this module support hot-swap replacement?
A: Yes. The module supports online replacement without shutting down the system, minimizing downtime during maintenance. The dual-port redundancy also ensures one communication path remains active if the other fails.

Q3: How does the redundancy feature work?
A: The module provides two communication ports. If one port fails, the scanner automatically switches to the backup port to maintain continuous communication with minimal delay. This dual-path design prevents single points of failure in the I/O network.

Q4: Is the 900C73R-0100-44 still in production?
A: No. Honeywell has discontinued this module. However, it remains a critical component for maintaining legacy HC900 installations, and third-party suppliers continue to offer it for existing systems.

Q5: What are the key environmental specifications?
A: The module operates from 0°C to +60°C and is powered by 5 VDC from the HC900 rack backplane. It is designed for use in industrial control cabinets with adequate ventilation.