Abstract
The implementation of a monitoring and control of a variable frequency drive (VFD) fed three phase induction motor (IM) using programmable logic controller (PLC) technology for a powder compacting hydraulic press (HP) machine is described. The PLC co-ordinate the operational parameters such as ram down, ram dawdling, ram clasp and ram up in HP machine, during the operation. Typical techniques for three phases IM are commonly provided by mechanical and electrical equipments, but it has many limitations of stator insulation failures and reduces the life and efficiency of the system. In this proposed method, new control method based on the PLC has been introduced. The HP machine Solenoid valves are controlled using PLC as per the operation cycle. The efficiency of a PLC control is increased at variable speeds and thus increases the power consumption. Thus, the PLC proves as a resourceful and effective tool for controlling industrial electric drives.
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