Answer Posted / sankar maiti
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.
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Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?
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