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Product Introduction
The Honeywell 900C72-0144-00 is the HC900 C70 Controller CPU, the highest-performance processor in Honeywell’s acclaimed HC900 Hybrid Control System family. It is specifically designed for complex and large-scale control applications requiring rapid execution, high I/O capacity, integrated logic, and secure communication.
The HC900 C70 excels in process automation, thermal control, and safety environments, with up to 8000 I/O point capacity, multiple communication ports, and native support for advanced networking protocols like Modbus TCP/IP. It also supports redundant CPU and power configurations, making it ideal for mission-critical systems demanding 24/7 uptime.
Combined with Honeywell’s intuitive Hybrid Control Designer (HCD) software and seamless integration into SCADA and DCS systems, the C70 CPU offers a powerful and scalable platform for automation engineers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 900C72-0144-00 |
| Product Name | HC900 C70 Controller CPU |
| System Type | Hybrid Process Automation Controller |
| CPU Performance Class | C70 (High Performance) |
| User Memory | 2 MB non-volatile memory |
| RAM (Battery-backed) | 128 KB |
| Max I/O Capacity | Up to 8000 I/O points |
| Scan Time | < 25 ms for 1000 I/O points |
| Control Loops | Supports up to 200 PID loops |
| Communication Ports | 2 × Ethernet 10/100Base-T, 1 × RS-485 (Modbus RTU) |
| Modbus Support | Modbus TCP/IP (Master/Slave), Modbus RTU |
| Programming Software | Hybrid Control Designer (HCD) |
| Redundancy | Supports CPU and Power Redundancy |
| Mounting Type | DIN rail or panel-mounted |
| Power Supply Input | 24 VDC (supplied via separate power module) |
| Operating Temperature | 0°C to +60°C (32°F to +140°F) |
| Storage Temperature | –40°C to +85°C (–40°F to +185°F) |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Enclosure | Open-style unit (requires panel or cabinet installation) |
| Dimensions (H × W × D) | 137 × 38.1 × 151.7 mm |
| Weight | 0.454 kg |
| Certifications | CE, UL, CSA, FM, RoHS, Class I Div 2 (on select configurations) |
Applications
The HC900 C70 CPU is purpose-built for demanding industrial automation scenarios, combining fast execution, flexibility, and a rugged form factor. Key applications include:
-
Thermal Processing Plants
Controls multi-zone ovens, kilns, and autoclaves with fast PID execution and ramp/soak capabilities. -
Batch Process Industries
Widely used in chemical, pharmaceutical, and food & beverage for batch sequencing, recipe control, and regulatory compliance. -
Water & Wastewater Systems
Ideal for large-scale infrastructure with distributed I/O, remote diagnostics, and advanced alarm handling. -
Petrochemical and Refinery Systems
Handles combustion control, reaction processes, interlocks, and real-time monitoring. -
Power Generation
Suitable for gas turbines, boiler control, and balance-of-plant systems. -
Environmental Chambers and Climatic Test Equipment
Provides high-speed, multi-loop control for lab-grade precision and industrial durability.
Product Advantages
-
High Processing Capacity
Designed for large-scale automation, supporting up to 8000 I/O points and 200+ PID loops. -
Redundancy-Ready Design
Built-in support for CPU and power redundancy ensures uninterrupted system operation. -
Advanced Networking
Dual Ethernet ports and RS-485 allow seamless integration with plant SCADA, HMIs, or third-party PLCs. -
Flexible Deployment
Supports modular expansion with I/O and specialty modules, making it suitable for centralized or distributed topologies. -
Robust Operating Range
Operates in temperatures from 0°C to +60°C and storage down to –40°C, suitable for harsh industrial environments. -
Simplified Configuration
Uses Honeywell’s Hybrid Control Designer (HCD), which simplifies setup, PID tuning, and I/O configuration. -
Compliance with Industry Standards
Certified for global use, including hazardous areas with Class I Division 2 ratings. -
Unified Control and Safety
Can integrate process control and safety applications within a single architecture, reducing cost and footprint.
Frequently Asked Questions (FAQ)
-
Q: What is the primary function of the HC900 C70 Controller CPU?
A: It acts as the central processing unit for Honeywell’s HC900 control system, managing complex process logic, I/O, and communications. -
Q: How many I/O points can the C70 support?
A: It supports up to 8000 I/O points through modular expansion. -
Q: What types of communication protocols are supported?
A: It supports Modbus TCP/IP (master/slave) and Modbus RTU over RS-485. -
Q: Does it support redundancy?
A: Yes, it offers support for redundant CPUs and redundant power modules to maximize uptime. -
Q: Which software is used for programming the HC900 C70?
A: Honeywell’s Hybrid Control Designer (HCD) is used for system configuration and programming. -
Q: Can the HC900 C70 be used for thermal process applications?
A: Absolutely. It is widely used for batch ovens, kilns, heat treaters, and other temperature-critical processes. -
Q: Is the unit DIN rail mountable?
A: Yes, it supports both DIN rail and panel mounting configurations. -
Q: What’s the memory capacity of the C70 CPU?
A: It includes 2 MB of non-volatile memory and 128 KB of battery-backed RAM. -
Q: Can it be integrated with third-party SCADA systems?
A: Yes, via Modbus protocols, it can integrate with most SCADA and HMI platforms. -
Q: Is this controller certified for hazardous locations?
A: Yes, select configurations are certified for Class I Div 2 and comply with FM, UL, CE, and CSA standards.
Related Models from the HC900 Series
| Model Number | Description | Max I/O Capacity | Communication | CPU Class |
|---|---|---|---|---|
| 900C50-0244-00 | HC900 C30 CPU (Compact) | Up to 1500 | Ethernet, Modbus RTU | C30 |
| 900C51-0243-00 | HC900 C40 Mid-range CPU | Up to 2000 | Ethernet, RS-485 | C40 |
| 900C52-0243-00 | HC900 C50 CPU (Advanced) | Up to 4000 | Ethernet, Modbus TCP/IP | C50 |
| 900C70-0143-00 | HC900 C70 CPU (Legacy version) | Up to 8000 | Ethernet, Serial | C70 |
| 900CP1-0300-00 | HC900 Compact CPU | Up to 512 | Limited Modbus | Compact |
| 900R50-0001 | Redundant CPU Kit for HC900 | N/A | Redundancy Synchronization | Redundancy |
Popular Honeywell Industrial Automation Products
| Model Number | Product Type | Application | Key Feature |
|---|---|---|---|
| UDC3500 | Universal Digital Controller | Process and temperature control | High-accuracy PID |
| STG700 SmartLine | Pressure Transmitter | Oil & gas, water treatment | HART / Wireless protocols |
| Experion PKS C300 | Distributed Control System (DCS) | Enterprise automation | Scalable I/O + Fault Tolerance |
| ControlEdge PLC | Industrial Controller | Discrete & batch process control | OPC UA / IIoT Ready |
| HC900-C50 | Mid-performance hybrid controller | Furnace, oven, and water systems | Up to 4000 I/O |
| SLN700 | Level Transmitter | Liquid measurement | SmartLine communication |
Excellent PLC
