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The Honeywell 900RSM-0101 is a vital component for establishing controller redundancy within the ControlEdge HC900 system. This Redundant Switch Module (RSM) facilitates the high-speed synchronization link between dual CPUs, managing the "Lead" and "Reserve" status of...
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The Honeywell 900RSM-0101 is a vital component for establishing controller redundancy within the ControlEdge HC900 system. This Redundant Switch Module (RSM) facilitates the high-speed synchronization link between dual CPUs, managing the "Lead" and "Reserve" status of the controllers. We provide this unit as 100% Brand New factory-original hardware, ensuring instantaneous, bumpless failover to maintain the stability of critical process automation tasks.
| Parameter | Specification |
|---|---|
| Model Number | 900RSM-0101 |
| Manufacturer | Honeywell |
| Series | ControlEdge HC900 |
| Function | CPU Redundancy Synchronization and Switching |
| Dimensions | 18 cm x 11.5 cm x 6.3 cm |
| Weight | 0.5 kg |
| Power Requirement | Powered via the HC900 backplane |
| Indicators | Front-panel LEDs for Status and Active Controller |
Instantaneous CPU Failover
The 900RSM-0101 continuously monitors the heartbeat of the primary CPU. Upon detecting a fault, it triggers an immediate failover to the backup CPU in milliseconds, ensuring bumpless transition with no interruption to output signals or PID loops. This ensures process stability and maintains operational continuity.
Dedicated Data Synchronization
This module facilitates the high-speed exchange of internal variables, registers, and I/O states between the two CPUs. This continuous "mirroring" ensures the reserve CPU always holds an up-to-date copy of the process image, making failover seamless and uninterrupted.
Non-Intrusive Maintenance
Designed for non-intrusive maintenance, the 900RSM-0101 allows maintenance teams to replace a failed CPU or the module itself (under specific conditions) without having to shut down the entire control system. This significantly reduces Mean Time to Repair (MTTR) for mission-critical infrastructure.
Rugged Backplane Interface
Honeywell uses industrial-grade connectors in the 900RSM-0101 to minimize the effects of oxidation and vibration. This ensures the high-speed synchronization bus remains reliable even in harsh chemical or manufacturing environments, reducing downtime caused by physical wear.
Do I need one or two 900RSM-0101 modules for a redundant system?
A standard redundant HC900 rack configuration requires one 900RSM-0101 module. It sits between the two CPU modules in the redundant chassis, coordinating the redundancy logic and failover process.
Is the 900RSM-0101 compatible with all HC900 CPUs?
This module works specifically with redundant-capable CPUs like the C70, C75, or C75S. It is not required for non-redundant CPUs like the C30 or C50 that use a single processor rack.
How can I tell which CPU is currently in control?
The 900RSM-0101 features LED indicators on the front panel that clearly display which CPU is the "Lead" (Active) and which is the "Reserve" (Standby). This provides instant diagnostic visibility without requiring a laptop connection.
What is the condition of this unit?
We guarantee that this product is 100% Brand New, unused, and ships in its original Honeywell factory-sealed packaging. We do not supply refurbished or used modules, ensuring the reliability of critical redundancy applications.
