munzir
Full Member level 6
Problem with the speed of the main motor of the printing machine ?
Its an old printing machine it doesn't have the electronic controlling system ..... No electronics involve in it .........
The speed of the main motor (machine) is set manually with the pot (multi-turn pot of 10 K ohm resistance ) ......... and the output of the pot is directly connected to the inverter Mitsubishi Freqrol A 500 .........
The problem is that the speed of the main motor automatically decrease & sometimes automatically decreases (as compared to the set speed) ........ I have already checked & changed the pot but with no effect ........
The frequency on the inverter's panel keeps on increasing & decreasing for e.g : set at about 59 m/min and on the inverter's panel frequency keeps on changing between the range 27.32 to 27.47 Hz ......
What might be the cause of the problem ?
How to cure for this problem ?
thanks
Its an old printing machine it doesn't have the electronic controlling system ..... No electronics involve in it .........
The speed of the main motor (machine) is set manually with the pot (multi-turn pot of 10 K ohm resistance ) ......... and the output of the pot is directly connected to the inverter Mitsubishi Freqrol A 500 .........
The problem is that the speed of the main motor automatically decrease & sometimes automatically decreases (as compared to the set speed) ........ I have already checked & changed the pot but with no effect ........
The frequency on the inverter's panel keeps on increasing & decreasing for e.g : set at about 59 m/min and on the inverter's panel frequency keeps on changing between the range 27.32 to 27.47 Hz ......
What might be the cause of the problem ?
How to cure for this problem ?
thanks