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Product Description
The Honeywell 900C71R-0000-10 is a C70 CPU module designed for use in the Honeywell HC900 Hybrid Control System. As a core processing unit, it combines advanced logic, loop, and sequencing control in one module, supporting both non-redundant and redundant configurations. With built-in Ethernet communication, serial ports, and scalable architecture, it offers high flexibility and robustness for process automation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 900C71R-0000-10 |
| Product Type | C70 CPU Module (Redundant capable) |
| CPU Type | 32-bit with battery-backed real-time clock |
| Serial Ports | 2 × RS-232/RS-485 (legacy), RS-485 (new systems) |
| Ethernet Ports | 2 × 10/100Base-T for host communication |
| Memory | Flash memory for firmware and configurations |
| Communication Protocols | Modbus TCP, Modbus RTU |
| Compatible I/O | Remote via Scanner 2 modules (900C73R) |
| Redundancy Support | Yes (with Redundancy Switch Module) |
| Power Supply | Supplied via rack (P01/P02/P24) |
| Installation Rack | HC900 controller rack (4, 8, or 12 slot) |
| Dimensions (H × W × D) | 137 × 38.1 × 151.7 mm |
| Weight | 0.4 kg |
Applications
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Industrial process control
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Thermal processing systems (furnaces, kilns)
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Water and wastewater treatment plants
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Batch and continuous manufacturing
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Safety interlock and alarm systems (when used in SIL-certified systems)
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SCADA and HMI integration for real-time control
Advantages
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Flexible architecture: Supports modular system expansion with remote I/O.
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Redundancy-ready: Ensures system availability in mission-critical applications.
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Versatile communication: Dual Ethernet ports and serial interfaces.
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Scalable control: Suitable for both small and medium-scale operations.
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Modbus support: Integrates easily with third-party systems.
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Rugged design: Reliable performance in industrial environments.
FAQ Section
Q1: What is the purpose of the Honeywell 900C71R-0000-10 module?
A1: It acts as the central processing unit in HC900 systems, handling control logic, data acquisition, and communication.
Q2: Does this model support redundancy?
A2: Yes, it supports redundant configurations with an RSM (Redundancy Switch Module) and a paired CPU.
Q3: What type of communication ports are available?
A3: It features 2 Ethernet ports for host communication and 2 serial ports (RS-232/RS-485).
Q4: Can I connect local I/O modules directly to the C70 CPU?
A4: No, all I/O for the C70 must be remote, connected via Ethernet through Scanner 2 modules.
Q5: Is this module compatible with the new SIL-rated systems?
A5: No, this model is for legacy systems. SIL-rated equivalents are available under different part numbers.
Q6: What kind of power supply is required?
A6: It is powered via a Honeywell rack using models like 900P01 or 900P02 power supplies.
Q7: What configuration tools are compatible?
A7: Honeywell HC Designer Software is used for configuration and diagnostics.
Q8: Is hot-swapping supported for the CPU?
A8: No, the CPU module must be powered down before removal or replacement.
Q9: How many I/O racks can be connected to a C70 CPU?
A9: Up to four I/O expansion racks via a private Ethernet network.
Q10: What kind of applications is this CPU best suited for?
A10: It is ideal for industrial automation in processes requiring precise and reliable control.
Related or Same Series Models
| Model Number | Description | Redundancy | Communication | Dimensions (mm) | Weight |
|---|---|---|---|---|---|
| 900C71R-0000-10 | C70 CPU (Redundant Config.) | Yes | Dual Ethernet | 137 × 38.1 × 151.7 | 0.4 kg |
| 900C72R-0000-10 | C70R CPU (Active-Redundant) | Yes | Dual Ethernet | 137 × 38.1 × 151.7 | 0.4 kg |
| 900C70-0360-00 | C70 CPU (New System) | No | Dual Ethernet | 137 × 38.1 × 151.7 | 0.4 kg |
| 900C75-0360-00 | C70R CPU (New System Redundant) | Yes | Dual Ethernet | 137 × 38.1 × 151.7 | 0.4 kg |
| 900C50-0360-00 | C50 CPU (New System) | No | Ethernet | 137 × 38.1 × 151.7 | 0.4 kg |
| 900C30-0360-00 | C30 CPU (Compact, New System) | No | RS485 | 137 × 38.1 × 151.7 | 0.4 kg |
Popular Honeywell Models
| Model Number | Description | Application | Dimensions (mm) | Weight |
|---|---|---|---|---|
| 8C-PCNT02 | Series 8 C300 Controller | Distributed Control | 137 × 38.1 × 151.7 | 0.4 kg |
| 8C-PAOHA1 | Analog Output with HART | Analog Control | 137 × 38.1 × 151.7 | 0.4 kg |
| 8C-PAON01 | Analog Output Module | Field Output Control | 137 × 38.1 × 151.7 | 0.4 kg |
| 8C-TAIDA1 | Analog Input IOTA | Signal Acquisition | 137 × 38.1 × 151.7 | 0.4 kg |
| 900C30S-0360-00 | SIL-rated Compact Controller | Safety System Control | 137 × 38.1 × 151.7 | 0.4 kg |
| 900RSM-0001 | Redundancy Switch Module (RSM) | Redundant CPU Synchronization | 137 × 38.1 × 151.7 | 0.4 kg |
