Description
The COMPRESSOR CONTROLS CORP (CCC) TMPU-1002 is a high-reliability Turbo Machinery Processing Unit board, specifically designed for the Series 3+ and Series 4 control systems. This board functions as the primary computational engine for specialized turbomachinery control applications, including antisurge, performance, and load-sharing control. The Rev:B version features optimized logic circuits to handle the high-speed data processing required for millisecond-level response times in centrifugal and axial compressor protection.
- System Compatibility: CCC Series 3+ / Series 4 Control Platforms
- Processing Core: High-speed proprietary microprocessor for real-time control
- Input Signal Sampling: Supports high-frequency analog and digital inputs
- Response Time: Sub-millisecond execution for critical antisurge loops
- Power Requirements: 24V DC Internal Supply (standard rack power)
- Onboard Memory: Integrated Flash and RAM for control algorithm storage and diagnostic logging
- Redundancy Support: Dual-redundant communication bus interface

Product Datasheet
| Feature | Specification |
|---|---|
| Model | CCC TMPU-1002 |
| Part Number | 17-505102-001 |
| Revision | REV:B |
| Dimensions | 215 x 165 x 25 mm |
| Weight | 0.48 kg |
| Country of Origin | USA |
| Interface | High-density gold-plated edge connector |
| Operating Temp | -20°C to +60°C |
Application Fields
This control board is a critical component in global energy infrastructure, particularly in:
- Antisurge Control: Protecting large compressors from catastrophic surges during process fluctuations.
- LNG Liquefaction: Managing complex refrigeration compressor strings in liquefied natural gas plants.
- Petrochemical Extraction: Load sharing and speed control for multi-stage gas compressors.
- Power Generation: Precise fuel gas booster compressor control for gas turbines.
- Refinery Off-Gas: Balancing suction and discharge pressures in vapor recovery units.
Product Instructions
- Preparation: Before servicing, ensure the compressor train is in a safe state or that the control system is in “Manual/Bypass” mode if a redundant partner board is taking the load.
- ESD Safety: This board contains ultra-sensitive processing components. Use a grounded wrist strap and an ESD-protected work area for all handling.
- Mechanical Installation: Align the TMPU-1002 with the guide rails in the CCC card cage. Slide the board inward until the edge connector is fully seated in the backplane.
- Configuration: Upon installation, the board may require a firmware upload or parameter synchronization from the host engineering workstation (Configurator) to match the specific compressor map.
- Status Check: Monitor the onboard status LEDs. A steady green “Run” or “OK” light indicates the board has passed its internal self-test and is communicating with the system bus.
Q&A – Common Questions
Q1: What is the difference between the TMPU-1001 and the TMPU-1002? A1: The TMPU-1002 is an upgraded processing unit with higher memory capacity and faster clock speeds, allowing it to handle more complex control algorithms and higher I/O densities than the earlier 1001 model.
Q2: Can I swap a Rev:A board with a Rev:B board? A2: Generally, yes. Revision B is backward compatible with Revision A hardware. However, ensure the system software version supports the minor hardware changes introduced in the later revision.
Q3: How do I troubleshoot a “CPU Fail” error on the board? A3: First, verify the rack power supply voltages. If the power is stable, try reseating the board to ensure the edge connector is clean and properly aligned. If the error persists, the board may have internal memory or processor failure and requires professional repair.
Related Product Recommendations
- CCC 17-505101-001 | TMIO-1001 Input/Output Module
- CCC 17-505103-001 | TMPW-1001 Power Supply Board
- CCC 17-505105-001 | TMBP-1001 Backplane Assembly
- Bently Nevada 3500/05 | System Rack for Machinery Protection
- Honeywell 51403483-100 | TDC 3000 Process Manager Board

