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Answer Posted / gulshan
VFD Variable Frequency drive. Frequency change also will be
change speed . analog input supply 4- 20 ma through plc to
be change speed and out commend 4-20 ma swing in your scada
on your pc.start stop comment through digital comment.start
to out side the field.
But we can also control the motor with VFD with a
POtentiometer. We can use the poentiometer instead of PLC.
It also can vary the Frequency
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