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Product Introduction
The Honeywell 900C70-0460 is the top-tier controller CPU in the HC900 Hybrid Control System family, offering advanced processing power and redundancy capabilities. The C70 CPU is designed for complex process automation systems that require large I/O handling, rapid execution cycles, and uncompromising reliability in hybrid industrial environments.
As a high-performance controller, the 900C70-0460 supports large-scale control applications across industries such as chemicals, pharmaceuticals, power generation, and thermal processing. With built-in features like peer-to-peer networking, web server functionality, and support for safety systems, the C70 CPU provides unmatched versatility and dependability.
Product Specifications
| Parameter | Description |
|---|---|
| Model Number | 900C70-0460 |
| Series | HC900 Hybrid Controller Series |
| CPU Type | C70 Central Processing Unit |
| Processor Type | High-speed 32-bit RISC Processor |
| Execution Speed | Sub-5ms scan time for 1000 blocks |
| Memory | 20MB Flash, 8MB RAM |
| Max I/O Capacity | Up to 4000+ I/O points |
| Rack Support | Supports up to 8 local/remote I/O racks |
| Redundancy Support | Yes – CPU, power, and communication |
| Ethernet Ports | 2 × 10/100 Mbps (Modbus TCP/IP, peer-to-peer, OPC) |
| Serial Ports | 1 × RS485/RS232 (Modbus RTU) |
| Supported Protocols | Modbus RTU, Modbus TCP/IP, peer messaging, OPC DA |
| Programming Software | Control Designer (Function Block Diagram Programming) |
| Web Server | Built-in for remote monitoring and diagnostics |
| Time Synchronization | SNTP/NTP support |
| Real-Time Clock | Yes |
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Storage Temperature | -40 to 85°C (-40 to 185°F) |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Power Supply Requirement | 24 VDC nominal (10.2–30 VDC range) |
| Mounting Type | DIN rail or panel mount |
| Dimensions (W × H × D) | 137 × 38.1 × 137.16 mm |
| Weight | 0.4 kg |
| Certifications | CE, UL, CSA, RoHS, SIL2-capable |
Product Applications
The 900C70-0460 C70 Controller is engineered for mission-critical and high-throughput automation applications. Its advanced capabilities allow for:
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Batch Processing in chemical and pharmaceutical plants requiring recipe control and data integrity.
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Combustion and Furnace Control in thermal processes demanding precise temperature and safety loops.
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Power Generation and Boiler Control, including burner management systems.
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Water/Wastewater Automation involving pump control, filtration systems, and energy optimization.
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Food & Beverage Industry control systems for large-scale production lines.
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Safety-Critical Systems, integrating ESD (Emergency Shutdown), BMS (Burner Management System), and SIS (Safety Instrumented Systems).
Product Advantages
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Highest Performance in HC900 Family: Capable of handling over 4000 I/O points with high-speed execution and deterministic performance.
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Robust Redundancy Options: Supports full redundancy for CPU, communication, and power modules, ensuring zero downtime in critical applications.
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Hybrid Control: Simultaneously manages discrete logic, analog processing, and PID control in a unified environment.
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Advanced Communication: Multiple protocols including OPC DA, Modbus RTU/TCP, and peer-to-peer over Ethernet.
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Remote Access & Web Monitoring: Embedded web server enables diagnostics and process supervision from any browser.
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Security & Time-Sync: Built-in SNTP/NTP time synchronization and secure password-controlled access.
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Field-Proven Stability: Industrial-grade design with high tolerance to environmental conditions.
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Versatile Programming: Control Designer software supports modular and scalable design using function blocks.
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Long-Term Lifecycle Support: Backed by Honeywell’s commitment to industrial-grade longevity and global service.
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Modular Integration: Easily integrates with SCADA, HMI, and third-party systems through open interfaces.
Frequently Asked Questions (FAQ)
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What distinguishes the C70 CPU from C30 and C50 models?
The C70 offers the highest processing power, the largest I/O capacity (4000+ points), and advanced redundancy features compared to the C30 and C50. -
Can the 900C70-0460 be used in safety-related applications?
Yes, it is SIL2 capable and suitable for SIS, ESD, and BMS systems. -
Does the controller support redundant CPU configurations?
Absolutely. It supports redundant CPU, power, and Ethernet configurations for fault tolerance. -
What software is used to program the C70 controller?
Honeywell’s Control Designer software using function block programming. -
Is the controller compatible with Modbus devices?
Yes, it supports both Modbus TCP/IP and Modbus RTU. -
What kind of I/O modules are compatible with the C70 CPU?
It supports all HC900 analog, digital, and specialty I/O modules via backplane and remote I/O racks. -
Can the controller be integrated with third-party SCADA?
Yes, using OPC DA and standard Modbus protocols, integration is seamless. -
Does the C70 have real-time clock support?
Yes, it includes a built-in real-time clock with NTP/SNTP time synchronization. -
Is there built-in diagnostic functionality?
Yes, both local and remote diagnostics are supported through the web interface and software tools. -
What is the power requirement for this CPU?
The controller operates at 24 VDC within a range of 10.2–30 VDC.
Related Models from Same Series or Functionally Equivalent
| Model Number | Description | Max I/O Capacity | Redundancy | Special Feature |
|---|---|---|---|---|
| 900C30-0244-00 | HC900 C30 Compact CPU | 512 | Optional | Space-saving design |
| 900C50-0460 | HC900 C50 Mid-range CPU | 2048 | Yes | Balanced performance |
| 900P01-0101 | Power Module for HC900 CPUs | N/A | No | For CPU power supply |
| 900R12-0001 | 12-slot I/O Rack | N/A | No | Large I/O capacity rack |
| 900H32-0101 | 32-Channel Analog Input Module | 32 AI | No | High-density analog inputs |
| 900CSM-0001 | Communication Switch Module | N/A | No | Expands Ethernet ports |
Popular Honeywell Models (Same Brand, Widely Used in Industry)
| Model Number | Description | Category | Key Feature |
|---|---|---|---|
| Experion PKS C300 | DCS controller for plant-wide automation | Distributed Control | High reliability, redundancy |
| HC900-C50 | Hybrid controller CPU | Hybrid Controller | Mid-range, function block based |
| ML200 | Compact modular PLC | Logic Controller | Flexible and cost-effective |
| UDC3500 | Universal process controller | Loop Controller | PID control with digital interface |
| ST700 | Smart pressure transmitter | Field Instrument | HART communication, SIL-rated |
| HC900-C30 | Entry-level hybrid controller | Hybrid Controller | Compact for small systems |
