Product Core Brief
- Model: ABB REG 670 1MRK002826-AC
- Brand: ABB
- Series: REG 670
- Core Function: Turbine control and speed/load regulation
- Product Type: Control System Module
- Key Specs: Analog/Digital I/O | Profibus DP/Modbus RTU | 24 VDC power
- Condition: New Original (New Surplus)
Product Introduction
ABB REG 670 1MRK002826-AC is a dedicated turbine control module designed for gas and steam turbine applications. It integrates speed and load regulation, providing both analog and digital I/O interfaces for precise control within ABB’s 670 DCS architecture. This module is commonly deployed in power generation plants and industrial automation setups requiring high reliability and deterministic performance.
The module supports Profibus DP and Modbus RTU communication, ensuring backward compatibility with older REG 670 CPUs. Its modular design allows for straightforward replacement without reconfiguring the entire system, provided firmware versions are compatible. Tested to ensure proper functionality, it reduces the risk of integration errors and maintains plant uptime.
Frequently Asked Questions
Q: Can I hot-swap the REG 670 1MRK002826-AC module?
A: Honestly, no. While the 670 series supports some modular changes, this specific regulator module requires a controlled shutdown. Hot-swapping can disrupt the bus and damage analog circuits.
Q: Is this model obsolete or are there replacements?
A: In our experience, ABB maintains the 670 series for legacy plants. Firmware Rev Mismatch is common; verify your CPU version before upgrading. ABB recommends the same series for direct replacement, or check the REG 670 upgrade path if you are moving to 800xA controllers.
Q: Will I lose my program during replacement?
A: You might if you don’t back up. Always export the configuration and record DIP switch settings before removing the module. This ensures you can restore the system exactly as it was.
