900RSM-0101 | Honeywell HC900 Series Redundant Switch Module

Overview

The Honeywell 900RSM-0101 is a Redundant Switch Module (RSM) developed for the ControlEdge HC900 hybrid control system. It enables automatic switchover between primary and backup Control Processor Modules (CPMs), ensuring continuous control operation in the event of a processor failure. This module is essential for achieving high-availability system configurations, allowing uninterrupted process performance and enhanced fault tolerance across critical automation networks.

Technical Specifications

• Model Number: 900RSM-0101

• Series: ControlEdge HC900

• Product Type: Redundant CPU Switch Module

• System Compatibility: ControlEdge HC900 Hybrid Controller

• Primary Function: Manages communication and failover between dual CPMs

• Processor Switching: Automatic detection and transfer between primary and secondary CPUs

• Communication Interface: High-speed backplane interconnect with redundant data paths

• LED Indicators: Tri-color LEDs for active/standby status and communication diagnostics

• Mounting Type: DIN rail or panel-mounted configuration

• Operating Voltage: 24 V DC nominal

• Power Consumption: Approx. 5 W typical

• Operating Temperature Range: 0°C to +60°C (32°F to 140°F)

• Storage Temperature Range: –40°C to +85°C (–40°F to 185°F)

• Humidity Range: 5% to 95% RH, non-condensing

• Construction: Industrial-grade metal housing for EMI/RFI protection

• Dimensions: 56 mm (W) × 157 mm (H) × 81 mm (D)

• Weight: Approx. 0.52 kg (1.15 lbs)

• Country of Origin: USA

• Condition: New, factory-sealed

• Warranty: 12 months standard

Key Features

• Automatic Redundancy Management: Seamlessly switches control from the active CPU to the backup CPU when a fault is detected.

• High Availability: Maintains continuous system operation without downtime during CPU transitions.

• Integrated Diagnostics: LED indicators provide real-time system and communication status for simplified troubleshooting.

• Industrial-Grade Reliability: Rugged design ensures stable performance in high-temperature or high-noise environments.

• Plug-and-Play Configuration: Easily installs into HC900 racks without complex setup or external wiring.

• System Integrity Assurance: Supports redundant CPU architecture critical for safety and continuous process operations.

Application Scenarios

• Used in mission-critical process control systems requiring uninterrupted operation, such as oil refining, power generation, and water treatment.

• Suitable for distributed automation environments where redundancy enhances plant reliability.

• Ideal for HC900 hybrid systems configured with dual control processors for high-availability control logic.

• Commonly deployed in DCS and SCADA-based architectures demanding continuous uptime.

FAQs

• Q1: What is the primary purpose of the 900RSM-0101 module?
  It controls automatic failover between primary and backup CPUs in HC900 systems to maintain continuous operation.

• Q2: Does this module support hot-swapping?
  Yes, it can be replaced or serviced without powering down the control system.

• Q3: Can it be used in non-redundant configurations?
  No, it is specifically designed for redundant HC900 setups using dual CPMs.

• Q4: How does it indicate processor status?
  The front panel LEDs display the active and standby CPU conditions and communication health.

• Q5: Is it compatible with all HC900 series controllers?
  Yes, it is compatible with HC900 control systems using redundant CPU configurations.