TC660 twelve-pulse three-phase rectifier thyristor trigger board

TC660 twelve-pulse three-phase rectifier thyristor trigger board is a highly digital military quality design, supports network remote control and on-site control, Fuzzy-PID parameter open adjustment, integrates three types of open-loop voltage regulation, closed-loop constant voltage and constant current The adjustment method is integrated, and the SCR is controlled to realize constant voltage limiting or constant current limiting. The function parameter setting adopts button operation, the fault alarm and the interface parameter adopts LED digital tube display, and the setting parameter is automatically stored. The control board is equipped with functions such as automatic phase identification, phase loss protection, power-on soft start, slow shutdown, constant current output, constant voltage output, overvoltage protection, overcurrent protection, and working status indication. With twelve-pulse three-phase fully-controlled bridge rectifier or double-reverse star-shaped twelve-pulse rectifier trigger mode with balanced reactor, it can trigger thyristors below 5000A, suitable for voltage and current adjustment transformers in various fields of industry The primary side equal resistive load type is used in electrolytic plating, charging, three-phase thyristor power supply and other high-precision twelve-pulse power supply equipment with high-requirement control of the power supply.

The twelve-pulse three-phase rectifier thyristor trigger board has a variety of given control signal options, supports 0-5Vdc, 0-10Vdc, 0-10mA, 4-20mA and other analog input automatic control modes, and potentiometers can also be used (10K 2W) and manual control through the panel buttons, flexible and convenient, all parameters are digital, no temperature drift changes, improve the adjustment accuracy and power utilization efficiency, reduce the pollution of the power supply, have high voltage regulation accuracy, reliable stability good. At the same time, the control board has strong anti-interference ability, adopts unique anti-interference measures, runs normally in harsh interference environment, and uses isolation technology for all outputs, has multiple protection functions, and has a wide range of applications.

1. Performance characteristics:

1.1. Twelve-pulse three-phase output control, the components adopt high-stability imported components, and are manufactured by fully automatic SMD technology, with stable and reliable performance.

1.2. With digital constant current and constant voltage functions and current and voltage limiting functions, it can accurately control the load, protect against abnormal over-current, over-voltage, and over-temperature and emergency stop functions.

1.3. The double-row LED display window displays various operating states in real time, and the input keyboard has an automatic lock function to prevent misoperation.

1.4. Intelligent PID control scheme, open parameters, can be flexibly set to any physical quantity, adapt to different types of loads, high control accuracy, and good dynamic characteristics.

1.5. Perfect fault detection and alarm function, real-time detection of load current, load voltage, control signal, feedback signal loss and other parameters.

1.6. Interface compatibility: Support 0-5Vdc, 0-10Vdc, 0-10mA, 4-20mA and other input automatic control modes, and directly interface with various instruments and PLC signals; it can also be manually controlled by potentiometer or panel buttons.

1.7. Phase loss protection: When the main circuit power supply has a phase loss, it will give an alarm and prompt the load to stop output in real time.

1.8. Soft start: When starting, the output voltage will gradually increase from zero to 100% to eliminate the impact on the grid and load. The soft start time parameter can be set.

1.9. Slow shutdown: When shutting down, the output voltage will gradually decrease from 100% to zero to eliminate the impact on the grid and the load. The slow shutdown time parameter can be set.

1.10. With the function of automatically identifying phase sequence, there is no phase sequence requirement for the power supply of the control panel, no external synchronization signal is required, debugging is free, and the wiring is convenient.

1.11, the current loop (voltage loop) feedback input signal supports various analog input signals such as transformers, Hall current (voltage) sensors, 0-75mV shunts, and 0-5V.

1.12, the SCR drive interface is equipped with double-row LED lights, the green light indicates whether the trigger board is faulty, and the red light indicates whether the external control line is correct. You can quickly check the error location.

1.13. The control board has a protection design against the burn-out of the SCR trigger interface, and supports input and output multi-function expansion boards.

1.14. Advanced MODBUS field bus communication function, RS485 fully isolated control (optional).

1.15. Remote control or on-site control mode, with communication control function between control boards at the same time, to realize one-to-many synchronous operation control (optional).

1.16. All circuit boards are coated with three anti-paint protection, with excellent insulation, dustproof, moisture-proof, anti-corrosion, anti-aging, corona resistance and other properties.

2. Technical specifications: