ABB CMA127 (3DDE300407) SYNPOL D Control Board

Product Description

The ABB CMA127 (3DDE300407) is a core control board for the ABB SYNPOL D generator protection and control system. It executes protection algorithms, collects electrical measurement signals, performs logic judgment and protection trip commands. It communicates with other SYNPOL D boards including CMA123 display board, realizing integrated protection, monitoring and control for generator units in power plants.

Features

• Main control processing board for SYNPOL D generator protection system, part number 3DDE300407
• Process generator voltage, current, frequency and power measurement data
• Execute multiple generator protection logics, trigger trip and alarm outputs under fault conditions
• Internal bus communication with CMA123 display board and other terminal I/O boards
• On-board fault self-diagnosis circuit, record fault event codes and trip information
• Multiple LED indicators for power, running, fault and protection action status
• Industrial wide-temperature PCB design, anti-interference for power plant protection cabinet
• Standard rack slot installation, matching the SYNPOL D backplane framework

Application Scenarios

• Thermal power and hydropower plant generator SYNPOL D protection cabinets
• Generator overcurrent, overvoltage, differential and other protection logic processing
• Generator fault monitoring, trip control and event recording
• Cooperate with CMA123 to support local parameter viewing and reset operation
• Power plant generator protection system maintenance, spare parts replacement and retrofit

FAQ

Q: Which system does CMA127 belong to?
A: It is the main control board for ABB SYNPOL D generator protection system.

Q: What is the difference between CMA127 and CMA123?
A: CMA127 is the main control processing board; CMA123 is the display and keyboard HMI interface board.

Q: What is the full part number?
A: CMA127 / 3DDE300407.

Q: Is this board discontinued?
A: SYNPOL D is legacy generator protection equipment; CMA127 is mainly supplied as surplus and fully tested refurbished spare parts.