How the output module of the vacuum coating machine controls the inverter

How the output module of the vacuum coating machine controls the inverter

 

The vacuum coating machine is a kind of equipment for coating hardware, watches, glasses, etc. under a high vacuum degree. The early vacuum coating machines all used pure relay circuits, and the peripheral circuits were complicated and troublesome to maintain. Now they use Kewei EP series PLC. In addition, the analog output module controls the inverter, which not only simplifies the electrical circuit, but also realizes the automatic control of the coating machine, which is convenient and fast.

System structure of vacuum coating machine

1. One EP-20M20R (485 host), one FEX-4DA (485 expansion module, 0-10 output drives the inverter to work), to realize the control process of mechanical start and stop, alarm, manual evaporation and automatic single group or continuous evaporation .

2. The man-machine interface is connected with the RS0 port of the main station PLC through RS232, and all manual operations, parameter settings, and alarm prompts are realized through the man-machine interface.

Vacuum coating machine control requirements

1) Single evaporation, single evaporation can be performed according to the set parameters, and the evaporation voltage and evaporation time can be displayed;

2) Continuous evaporation, two consecutive evaporations can be performed according to the set parameters, and the evaporation voltage and evaporation time can be displayed;

3) Set the stop time, and stop the evaporation work after the set time;

4) Manual and automatic control switching;

5) Alarm for abnormal situations to realize the safety protection of equipment;

6) Technical protection, life protection of mechanical equipment;

 

eatures of vacuum coating machine system

1. Manual evaporation: single manual evaporation and continuous manual evaporation can be performed;

2. Automatic evaporation: single automatic evaporation and continuous automatic evaporation can be performed;

3. with or without bombardment options;

4. Evaporation process reset operation;

5. Automatically stop after the set stop time;

6. Automatic protection of mechanical life;

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