900C31-0021 Honeywell Controller CPU

900C31-0021 Honeywell Controller CPU | Modbus TCP & RS-485

Availability: 20 left in stock

Product Overview The Honeywell 900C31-0021 operates as the primary processing engine for the HC900 C30 Hybrid Control System. This CPU module seamlessly integrates...

SKU: 900C31-0021

Manufacturer: Honeywell
Product No.: 900C31-0021
Product Type: Distributed Control Systems
Product Origin: USA
Payment:T/T, Western Union
Weight: 360g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Honeywell 900C31-0021 operates as the primary processing engine for the HC900 C30 Hybrid Control System. This CPU module seamlessly integrates discrete logic and continuous loop control into a single architecture, making it the industry standard for thermal processing, batch automation, and water treatment applications. It manages real-time data acquisition from multiple I/O racks and coordinates high-speed communication with HMI/SCADA interfaces. We supply this unit as 100% Brand New and Original, ensuring your critical infrastructure benefits from the latest factory-spec hardware components.

Technical Specifications

Attribute	Specification Details
Model Number	900C31-0021
Controller Series	HC900 C30
Processor	Embedded High-Performance CPU
Memory	Integrated Non-Volatile Flash + RAM
Comm Interfaces	Ethernet (Modbus TCP), RS-485
Protocols	Modbus TCP, Peer-to-Peer Networking
Power Supply	24 VDC (Backplane Logic)
Operating Temp	0°C to +60°C (32°F to 140°F)
Weight	0.45 lbs (0.36 kg)
Dimensions	137 × 38 × 137 mm
Certifications	CE, UL, cULus

Engineering Advantages

Hybrid Control Versatility: The 900C31-0021 executes complex PID loops and high-speed discrete logic within the same scan cycle. This eliminates the need for separate PLC and PID controllers, simplifying system architecture in pharmaceutical and chemical plants.
Deterministic Communication: Built-in Ethernet ports utilize Modbus TCP for open connectivity with SCADA systems. The processor ensures deterministic data packet delivery, which prevents lag in time-critical monitoring applications like turbine control or furnace safety interlocks.
Non-Volatile Data Integrity: The integrated Flash and RAM storage protects user programs and calibration data against power fluctuations. It retains critical setpoints and logic configurations without the need for external battery backup, reducing long-term maintenance costs.
Anti-Interference Design: Engineered for harsh industrial environments, the module features advanced shielding against electromagnetic interference (EMI). This ensures signal stability even when installed in proximity to high-frequency variable frequency drives (VFDs).
Rapid Field Deployment: The compact, lightweight design allows for immediate installation into standard HC900 rack slots. Standardized RJ45 and serial ports facilitate quick network commissioning, reducing total project labor hours.

FAQs

Can I replace a legacy 900C31-0010 with this 900C31-0021?

Yes. The 900C31-0021 serves as an updated version within the C30 series. It maintains backward compatibility with existing HC900 racks and I/O modules while providing modern hardware reliability.
Does this CPU support remote I/O racks?

Absolutely. The 900C31-0021 coordinates multiple local and remote I/O racks via its high-speed serial and Ethernet interfaces, supporting distributed architecture for large-scale facilities.
How does the watchdog timer enhance safety?

The internal watchdog timer constantly monitors the CPU's operation. If the module detects a logic hang or hardware fault, it triggers a controlled system state to prevent unpredictable field device behavior, safeguarding both personnel and equipment.
Is this a genuine Honeywell part?

Yes. We only sell 100% Brand New units in original factory packaging. Each 900C31-0021 includes the manufacturer's serial number for full traceability.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.