Medium frequency power supply PLC operation

Basic Operation Steps of the Power Unit:


  1. Connect the external power, and turn on the Air Switch on the back panel;
  2. Turn on the cooling water inlet, and check the outlet of the cooling water to make sure the status of water recycle;

Medium frequency power supply PLC operation procedures:

  1. After the above steps, the PLC will take 10 seconds to turn on, and display the below contents on screen:
    superb PLC control panel

    (Indication Picture I)

  2. Touch button of system self-test , the screen will display the below indication of Self-test:
    PLC control panel 3

    (Indication Picture II)

    This a auto display, indicating the regular pre-checks of the system; if the checking result is normal, the display will return to Indication Picture I.

    Note: All alarm options as the below picture

    All alarm options of PLC control panel

    (Indication Picture III)

  3. Touch button of enter system , the screen will display:
    PLC control panel

    (Indication Picture IV)

    In this section, touch button of start , the power unit start to work, providing heating power to the furnace;
    The input wattage of the equipment can be adjusted by touching button of down or button of up :

    A short touch will change the wattage of 1%; or the user can touch button of 10% to turn on the digital adjusting function, see below picture:
    setting PLC control panel

    (Indication Picture V)

    In this section, you can select the target wattage and then touch button of enter to achieve the wattage adjustment in a more flexible degree;

  4. Touch button of stop , the Power Unit will stop heating, meanwhile the Timer will pause;Touch button of start , the Power Unit will continue heating, meanwhile the Timer will continue from the paused point.The Timer can be rest by touching button of time reset when the Power Unit is on the stop status, and the timing indication will be “0”.
  5. When the Power Unit is working, if abnormal condition occurs, e.g. short circuit, the screen will display the alarm message as below:
    PLC control panel 2

    (Indication Picture VI)

    When the fault is fixed, the alarm display will close and return to Indication Picture IV.

  6. To finish the working, please touch button of stop to turn off the Power Unit, but keep on the cooling water for 30 minutes; Please keep the Air Switch on all the time, also keep it on when the Power Unit is not working.

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