Plastic Injection Molding Machine Electromagnetic Induction Heater 30KW


30KW Plastic Injection Molding Machine Electromagnetic Induction Heater

Principle of Electromagnetic Induction Plastic Injection Molding Heater:

Most of the metal is heated by the high-frequency magnetic field and uses this principle to pass the high-frequency current through the coil, so that the coil generates a high-frequency magnetic field, so that the metal rod in the coil is induced to generate heat. The electrical energy can be converted into metal thermal energy by the above process. During the whole process, the metal rod does not have any physical contact with the coil, and the energy conversion is completed by the magnetic field eddy current and the metal induction.

 Advantages of electromagnetic induction plastic injection molding heater:

1.Energy saving and emission reduction (30-85%)

2.higher thermal efficiency

3.Reduced operating temperature

4.warm up fast

5’long service life

6.Maintenance is simple and convenient


What Advantages Does Electromagnetic Induction Heater Have Compared With Traditional Heaters?

Advantage Comparison
Electromagnetic Induction Heater Traditional Heater
Heating Principles Electromagnetic Induction Heating the  Resdistance Wire
Heated Part Charging barrel is heated directly to get higher efficiency ,but the induction coil itself is not heated to guaratte longer using life heater itself,then heat transfered to the charging barrel
Surface Temperature & Safety Max. 60 Degree Centigrade,safe to touch by hands. The same with your heating temperature, Dangerous to touch
Heating Rate High Efficiency:save 50%-70%warming -up time Low Efficiency:No time-saving
Energy Saving Save 30-80% Power Consumption No Saving
Temperature Control High precision Low Precision
Using life 4-5year 2-3year
Working Environment Normal temperature for workers,easy and comfortable Hot,especially for low latitude Area
Cost Cost-effective,with30-80% energy-saving rate,it takes 6-10 months to recover the cost. The higher the rate is,the less time it takes. Low

Application of electromagnetic induction:

1.Plastic rubber industry: plastic film blowing machine, wire drawing machine, injection molding machine, granulator, rubber extruder, vulcanizing machine, cable production extruder, etc.;

2.Pharmaceutical and chemical industry: pharmaceutical infusion bags, plastic equipment production lines, liquid heating pipelines for the chemical industry;

3.Energy, food industry: heating of crude oil pipelines, food machinery, super freighters and other equipment that require electric heating;

4.Industrial high-power heating industry: machine for killing machine, reaction axe, steam generator (boiler);

5.Smelting heating industry: die casting furnace zinc alloy, aluminum alloy and other equipment;

6.Building materials industry: gas pipe production line, plastic pipe production line, PE plastic hard flat net, geonet net unit, automatic blow molding machine, PE honeycomb board production line, single and double wall corrugated pipe extrusion production line, composite air cushion film unit, PVC hard Tube, PP extrusion transparent sheet production line, extruded polystyrene foam tube, PE winding film unit;

7.high power commercial induction cooker movement;

8.Dry heating in printing equipment;

9.other similar industry heating;

Technical Parameters


Technical Parameters

rated power Three-phase 30KW
Rated input current 40-45(A)
Rated output current 40-70(A)
Rated voltage frequency AC 380V/50Hz
Voltage adaptation range  constant power output at 300 ~ 400V
Adapt to ambient temperature -20ºC~50ºC
Adapt to environmental humidity ≤95%
Power adjustment range 20% ~ 100% stepless adjustment(That is: adjustment between 0.5 ~ 30KW)
Heat conversion efficiency ≥95%
Effective power ≥98%(Can be customized according to user needs)
working frequency 5~40KHz
Main circuit structure Full bridge series resonance
Control System The DSP-based high-speed automatic phase-locking tracking control system
Application mode Open application platform
monitor Programmable digital display
start time <1S
Instantaneous overcurrent protection time ≤2US
Power overload protection 130% instantaneous protection
Soft start mode Fully electrically isolated soft start heating/stop mode

RS485 communication

Modbus RTU standard communication protocol
Support PID adjustment power Identify 0-5V input voltage
Support 0 ~ 1000 ºC load temperature detection Accuracy up to ± 1 ºC
Adaptive coil parameters  10 square line, length 60m, inductance 250 ~ 300uH



1, Connect the power supply voltage of the cooling fan, but connect the 220V power when the fan is 220V, and connect the 380V power when the fan is 380V

2, Connected with cooling fan 220V / 380V (depending on the user, generally 380V)

3, When the external cooling fan is DC 24V, this interface is a switch that controls the 24V fan to work or stop. The two ends of the interface are actually the normally closed contact points of the relay output on the motherboard.

4, Dual AC 24V power supply (choose 4 or 5 when making half-bridge)

5, Dual AC 24V power supply (choose 4 or 5 when making half-bridge)

6, Single AC 16V power supply

7, Power indicator (red)

8, Work indicator light, flashing during standby, and always on (green) during work

9, External indicator light, led to the LED interface outside the chassis

10, The soft start interface is connected to the R / s interface outside the chassis (can be set to open or close work through F-20, factory default close work, open stop status

11, Finely adjust the power potentiometer. When there is a large deviation in power, this potentiometer can be adjusted appropriately.

12, 32-bit high-speed DSP processor

13, Externally connected programmable operating display

14, Isolated RS485 communication interface

15, External load temperature detection interface 1, with an accuracy of ± 1 ° C (maximum 150 ° C) single-channel, default 1 is used to measure external working temperature

16, External load temperature detection interface 2, with an accuracy of ± 1 ° C (maximum 150 ° C)

17,Multi-function input interface (set by F-20) (1)10K input for external connection potentiometer can adjust the power range from 20% to 100% (2)Externally connected PID input (0 ~ 5V) input Do infrared thermometer or thermocouple conversion voltage 0 ~ 5V input to achieve the display temperature and control power size (up to 1000ºC can be measured and displayed)

18, Connect the high-frequency Mutual inductor and pay attention to the direction. If the direction is reversed, the power is very small

19, IGBT module drive (when doing half-bridge, choose 19, 20 or 23, 24)

20, IGBT module drive (when doing half-bridge, choose 19, 20 or 23, 24)

21, Connected to high voltage DC bus

22, IGBT temperature sensor interface

23, IGBT module drive (when doing half-bridge, choose 19, 20 or 23, 24)

24, IGBT module drive (when doing half-bridge, choose 19, 20 or 23, 24)

25, Connected to high voltage DC bus

26,RS485 communication interface, connect A ,B

27, Externally connected K-type thermocouple

28, Externally connected 12V relay drives other required loads, synchronized with the fan start/stop of the machine

Product Enquiry