Product Identification

900RSM-0200 is a Honeywell Redundant Switch Module for the ControlEdge 900 platform. It resides in a redundant controller rack and interfaces with both CPUs in the redundant system.

The front-panel controls and indicators give maintenance personnel a direct view of Lead and Reserve controller status while preserving synchronized redundant operation.

Engineering Data

Functions

• Indicates which CPU is operating as Lead and which is Reserve
• Sets the operating mode of both redundant controllers
• Provides a momentary command for transferring Lead control between CPU-A and CPU-B
• Supports synchronized redundant CPU operation during maintenance activities

Applications

The module is used in redundant ControlEdge HC900 process and safety controller racks where continuity of control and clear CPU role indication are required. Typical systems include thermal processing, chemical units, utilities, water treatment and other modular control applications.

Lifecycle

Select the exact 900RSM-0200 revision specified for the installed rack. Verify controller generation, rack hardware and firmware before replacement because legacy HC900 and current ControlEdge 900 configurations use different model conventions.

Related Products

Related rack hardware includes the paired redundant controller CPUs, ControlEdge 900 power supplies and the 900PSM redundant power status module. Each component has a distinct function and must be selected against the rack design.

Recommended Models

Additional catalogue references for maintenance and sourcing enquiries. Confirm the manufacturer, function and compatibility before ordering.