Industrial Induction Furnace Main Control Card IGBT Inverter Control Card

Technical standards
1 .Input power supply: 24Vdc ±15% ,150W
2 .Main circuit working power: 5 ~ 1000Vdc
3. Inverter output frequency: 400Hz ~ 100 kHz, DC side output frequency: 5k ~ 20 kHz
4. Voltage and current adjust range: 0 ~ 1000V or 0 ~ 1000A (According to the power value)
5. Power adjust range: power range can be 100kW,300kW, 500kW, 1000kW or upper. (100kW is the default version, if you need bigger, pls contact us before you order)
6. PID respond: 500uS
7. Stable accuracy: better than 0.5% (normal version), better than 0.05% (high accuracy version). (Default is 0.5% version, if you need high accuracy version, pls contact us before you order.)
8. Input signal: DC0-5V, 4-20mA, 10K potentiometer adjust or touch screen HMI given
9. Control methods: Series resonance power supply, PSM/PFM/BCM
10. 12 roads of input signal, 10 roads of relay output. (I/O isolated control)
11. Alarm relay contact capacity: 250Vac/10A OMRON
12. Voltage isolation: 3500 VRMS
13. Working environment: temperature: -20℃~ 60℃, RH: ≤ 90%RH（nodew）
Install: No flammable or explosive, no corrosive gas, no conductive dust, and altitude shall below 3000 M, upper than 3000 M should be properly reduce the capacity level.
14. Mechanical size: 240 * 160 * 38mm Installation holes size: 225 * 145mm
15. Weight: 0.43KG

Features:
1. Adopt DSP+CPLD digital control system, automatic frequency tracking, frequency feedback adaptive and other advanced control technologies to make the equipment more stable and more efficient. Fully automatic SMD process manufacturing, stable and reliable performance; HMI support Chinese and English language display.
2. Working mode: Constant current, constant power, constant temperature (optional function), process procedure (optional function), users can choose according to different working situation, support 12 bytes normal accuracy or 16 bytes high accuracy (optional function) sampling control.
3. The main control board comprehensively improves the system control accuracy and adjustment speed, current and voltage display resolution can reach 0.1V or 0.1A, power display reaches 0.01k resolution, output is stable.
4. Great fault detection and alarm function, real-time detection of load status, load current, control signal, feedback signal loss and other parameters, for the short circuit and open circuit fault in the heating sensor, designed with over frequency / low frequency protection functions, the protection system is more perfect and reliable. The current loop (voltage loop) feedback input signal supports various analog input signals such as transducer, Hall current (voltage) sensor 0-5V, etc.
5. Intelligent PID control solution, parameter openness, can be flexibly set to any physical quantity, suitable for different loads, and of good dynamic characteristics;
6. Interface compatibility: support 0-5Vdc, 4-20mA and other input signals, can be directly connect with various instruments and PLC, also can be manually controlled by potentiometer;
7. The main control board is with DC/DC isolated module, all output ports and switch digital input ports adopt electrical isolation design, which has better electromagnetic anti-interference protection effect.
8. Single main control board, wide frequency automatic tracking system, with fewer fault points and more precise control. Wide-band design load adaptability, single power supply can meet a variety of workpiece heating needs, no need to change multiple motherboards frequently; can facilitate users to quickly and accurately find the best frequency, temperature, heating depth and energy consumption through adjustment process matching relationship.
9. DSP real time detect the current changing state of the IGBT with high speed. Calculate the best control angle for the present running by frequency sweep phase lock (PLL), and adjust the phase lock frequency and phase position of the resonance inverter device, to ensure the power supply to work at its best performance.
10. Good resistance to voltage fluctuations, ensuring normal operation when the grid voltage fluctuates between 330V and 440V. It adopts voltage/power and current double closed-loop control, with constant voltage, constant current and constant power running functions, i.e., the output voltage or power does not change along with external factors, which can ensure the stability of load heating.
11. With Event Record function, HMI touch screen or external U disk will store 7 days records, the system will record the ON/OFF or system fault situation timely, convenient for users to query the running status and fault information, and find the related problem solve method; on-site display of fault, the touch screen will shows the fault content, click the related fault assist can help to find the related fault solve method. These can help the operator to solve 90% of the problem quickly, reduced the dependence of the operator’s skill level.
12. Inverter voltage and inverter current are collected in real time to make an output curve trend graph, which is convenient for long-term observation of the operation of the machine. The historical output function can be traced, displayed in a graphical form, the output parameters during the operation will be saved, and these can be printed out (print function, optional)
13. MODBUS fieldbus communication function, fully isolation control. The RS485 or CAN interface can exchange data with an external controller, and transmit all internal parameters of the above mentioned power supply to the host computer or the central control bus; also, the control board support Ethernet to remotely monitoring (optional).
14. Uninterruptible running design, when there is a power main circuit fast switching or flickering, the control board will run a self-diagnose, after repower on, it will auto-recover and return to normal working to avoid the production loss by out of service.
15. The IGBT driver control board is an attached with the main control board, it uses the innovative fast protection IGBT driver circuit, which reduces the dead zone time, and it is with anti-explosion tube protection which can add the stability of the whole machine.
16. The process procedure running allows user to preset current curve (or voltage, temperature and power curve), so as to finish the complex heat treatment process or heating process requirements, the main control board supports a maximum of eight process programs, each process program can be programmed with eight operation steps, each step can be timed and programmed with different modes, and the parameter will be saved after setting.