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- Honeywell
- 900RR0-0200
- Redundant Controller Rack
- USA
- 137 x 261.6 x 151.7 mm
- 1.751 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Honeywell 900RR0-0200 HC900 Redundant Controller Rack is a high-availability industrial control chassis designed for the Honeywell ControlEdge HC900 Distributed Control System (DCS) platform.
It is specifically engineered to host dual redundant CPU modules (Lead/Reserve configuration), along with associated redundancy switch modules and power supplies. This architecture enables hot standby operation, ensuring continuous process control even in the event of a controller failure.
This rack is used in mission-critical automation systems where uninterrupted control performance is required, such as oil & gas, power generation, and large-scale process industries.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | 900RR0-0200 |
| Product Type | Redundant Controller Rack |
| System Platform | Honeywell ControlEdge HC900 |
| CPU Support | Dual redundant CPU configuration (Lead / Reserve) |
| Compatible CPUs | C70 / C75 series (system dependent) |
| Redundancy Architecture | Hot standby controller system |
| Included Components | Redundancy switch module (RSM), dual CPU slots |
| Power Supply Support | Dual power supply configuration (system dependent) |
| Backplane Type | High-speed HC900 communication backplane |
| Communication | Internal redundancy + system backplane bus |
| Function | Controller-level redundancy management |
| Mounting Type | Panel-mounted / industrial cabinet installation |
| Dimensions | 137 × 261.6 × 151.7 mm |
| Weight | 1.751 kg |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5% to 95% non-condensing |
| Vibration Resistance | Industrial control-grade design |
Function and Working Principle
The 900RR0-0200 rack operates as the central redundancy management platform in HC900 systems.
Working principle:
- Dual Controller Architecture
Hosts two CPU modules:- Primary (Lead) controller
- Backup (Reserve) controller
- Real-Time Synchronization
Both CPUs continuously synchronize process data via redundancy communication channels. - Redundancy Switch Module (RSM)
Coordinates automatic failover between controllers. - Hot Standby Operation
The reserve CPU remains in standby mode, continuously updated and ready. - Automatic Failover Logic
If the primary CPU fails, the reserve CPU immediately takes control. - System Integrity Monitoring
Continuously monitors CPU health, communication status, and power conditions.
Role in System Architecture
The 900RR0-0200 rack serves as the highest-level redundancy layer in HC900 control systems.
It is responsible for:
- Providing controller-level fault tolerance
- Ensuring uninterrupted process control during CPU failure
- Synchronizing dual CPU operation in real time
- Hosting redundancy switch and controller coordination hardware
- Supporting high-availability industrial automation architectures
In system design, it functions as the core reliability layer for mission-critical control applications.
Industrial Applications
The Honeywell 900RR0-0200 is widely used in:
- Oil and gas production and refining systems
- Petrochemical and chemical processing plants
- Power generation and turbine control systems
- Offshore platforms and marine automation
- Water and wastewater treatment facilities
- Large-scale continuous manufacturing systems
- Safety-critical industrial control environments
- Infrastructure systems requiring zero downtime
It is designed for continuous 24/7 operation where controller failure is not acceptable.
Installation & Integration
Proper installation is essential for redundancy performance.
- Installed in HC900 control cabinet rack system
- Requires dual CPU installation (Lead + Reserve configuration)
- Includes redundancy switch module (RSM) integration
- Must be paired with compatible HC900 power supply modules
- Requires proper grounding and EMI shielding
- Backplane connectors must be fully aligned and secured
- System configuration must be done using HC900 engineering tools
- Failover testing required during commissioning
Compatible Components
The 900RR0-0200 rack typically works with:
- Honeywell HC900 CPU modules (C70 / C75 series)
- Redundancy Switch Module (RSM)
- HC900 power supply modules (900P series)
- Digital and analog I/O modules (via system racks)
- Communication interface modules
- HMI operator stations (900CR series)
- SCADA supervisory systems
Together, these components form a fully redundant distributed control system architecture.
Recommended Alternative Models
| Model | Type | Feature | Application |
|---|---|---|---|
| 900R12R-0501 | Redundant I/O Rack | I/O-level redundancy | Large process systems |
| 900R08R-0101 | Redundant expansion rack | Compact redundancy | Medium systems |
| 900R12R-0001 | 12-slot redundant I/O rack | High-capacity redundancy | Large-scale plants |
| 900R12-0001 | Standard controller rack | Non-redundant version | Basic systems |
| HC900 Redundancy Platform | System architecture | Full redundancy solution | Critical infrastructure |
Advantages
- True dual-controller redundancy (Lead/Reserve)
- Hot standby failover capability
- Real-time synchronization between CPUs
- High reliability for mission-critical systems
- Integrated redundancy switch module support
- Industrial-grade robust construction
- Seamless integration with HC900 platform
- Designed for zero-downtime operations
FAQs
Q1: What is the main function of the 900RR0-0200 rack?
It provides a dual redundant controller architecture for HC900 systems.
Q2: What type of redundancy does it support?
Hot standby Lead/Reserve CPU redundancy.
Q3: What happens if the main CPU fails?
The reserve CPU automatically takes over control.
Q4: Is it used with I/O modules?
No, it is primarily for controller redundancy, not standard I/O hosting.
Q5: What industries use this rack?
Oil & gas, power generation, petrochemical, and critical infrastructure systems.
Conclusion
The Honeywell 900RR0-0200 HC900 Redundant Controller Rack is a mission-critical system component designed to ensure continuous industrial operation through dual-controller redundancy. Its hot standby architecture, synchronization capability, and robust industrial design make it essential for applications requiring maximum uptime and system reliability.