Application Scenarios
In a mission-critical environment like a hospital or a data center, a YORK large-tonnage chiller operates 24/7 to maintain precise cooling. A failure in the control system can lead to catastrophic downtime, risking patient safety or server failure. The YORK 031-00940-001 directly addresses this critical pain point by acting as the dedicated controller that continuously monitors evaporator and condenser temperatures, pressures, motor currents, and oil pressure . It dynamically adjusts guide vane positions for load matching and initiates an immediate, safe shutdown if it detects fault conditions like motor overload or low oil pressure. For a facility manager, the availability of a programmed 031-00940-001 board is a “dual insurance” policy for the essential cooling system .
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 031-00940-001 |
| Manufacturer | YORK International (Johnson Controls) |
| Product Category | Main Processor Circuit Board / CPU Board |
| Compatible Systems | YORK MicroComputer Panel, OptiView Control Center |
| Adaptive Models | YORK YT/YK Centrifugal, YS Screw Chillers |
| Core Processor | Industrial-grade Microprocessor (e.g., Motorola 68K / PowerPC) |
| Memory | EPROM/Flash for firmware and configuration data storage |
| Key Interfaces | Proprietary backplane bus (connects to I/O, communication, and display boards) |
| Power Supply | Derived from cabinet power (typically +5V, ±12V, +24V DC) |
| Operating Temperature | 0°C ~ 60°C (industrial control cabinet environment) |
| Diagnostics | On-board LED status indicators and system fault logging |
Technical Principles and Innovative Values
- Innovation Point 1: Dedicated Real-Time Refrigeration Control Logic. Unlike a generic PLC, the YORK 031-00940-001 runs highly specialized firmware that is deeply optimized for the thermodynamic dynamics of centrifugal and screw compressors . It executes complex algorithms for load balancing and, most critically, anti-surge protection, adjusting guide vanes or unloading valves within milliseconds to prevent the compressor from entering damaging unstable operating regions . This domain-specific optimization is vital for the energy efficiency and longevity of large-tonnage chillers.
- Innovation Point 2: Integrated Multi-Layer System Protection. The board incorporates hardware and software-based protection circuits that monitor critical parameters in real-time . Its logic can initiate a controlled shutdown sequence within milliseconds of detecting a severe fault (e.g., high discharge pressure or low suction pressure), safeguarding the high-cost compressor and heat exchangers from catastrophic failure . This proactive protection is a key value driver for risk management in large facilities.
- Innovation Point 3: Critical Enabler for Legacy System Longevity. For chillers that are 15-20 years old, the 031-00940-001 board is often the sole source of control intelligence . The availability of this spare part (including refurbished, pre-programmed units) allows facilities to extend the life of critical infrastructure, avoiding multi-million dollar chiller replacement proj.
