Configured for redundant controller switching and synchronization management in the Honeywell ControlEdge HC900 system, the Honeywell 900RSM-0001 (900RSM-0001 Redundant Switch Module) provides direct physical execution of CPU redundancy control functions.
ControlEdge HC900 redundant controller racks including C30S, C50S, C70S, and C75S
Function
Manages primary and reserve CPU status monitoring, synchronization, and controller switchover operations
Operating Temp
0 deg C to 60 deg C
Storage Temp
-40 deg C to 70 deg C
Operating Humidity
10% to 90% RH, non-condensing
Power Consumption
Not specified by manufacturer
Environmental Protection
Conformal coating for G3 harsh environment conditions
Status Indicators
Tri-color LED indication for module status and controller state monitoring
Switch Interface
Manual Lead/Reserve selection with momentary contact for failover testing
Process Control and DCS Redundancy Management
The Honeywell 900RSM-0001 manages redundant controller coordination through direct interaction with dual HC900 processors. It monitors CPU operating states and controls the transition between active and standby controllers.
Furthermore, the module maintains processor synchronization to reduce control interruption during a failover event. The integrated key switch allows operators to select controller states manually and perform controlled redundancy tests.
The module supports ControlEdge HC900 redundancy functions, including lead controller identification, reserve controller monitoring, and fault status indication. Its LED diagnostics provide local verification of operating conditions during commissioning and maintenance activities.
Frequently Asked Questions
Q: What is the primary function of the Honeywell 900RSM-0001 in a redundant HC900 rack? A: The module monitors redundant CPU states and manages the switching process between active and reserve controllers within the HC900 redundant controller architecture.
Q: Does the 900RSM-0001 provide direct process I/O signal handling? A: No. The module performs redundancy management functions and does not process analog or digital field input/output signals.
Q: Can operators manually test controller failover using this module? A: Yes. The module includes a manual switch interface with a momentary contact position for controlled failover testing and controller state verification.
Field Installation Guidelines
Install the 900RSM-0001 only in compatible Honeywell ControlEdge HC900 redundant controller rack configurations.
Verify rack backplane connections before applying system power to ensure correct module communication.
Confirm that both primary and reserve processors complete synchronization before placing the redundant system into automatic operation.
Keep signal wiring separated from high-voltage power conductors to reduce electrical interference.
Connect cabinet grounding according to industrial control panel grounding practices.
Inspect LED status indicators after installation to confirm correct module initialization and controller state indication.
Follow Honeywell ControlEdge HC900 installation manuals for rack addressing, firmware compatibility, and redundancy configuration procedures.
