Editor's Pick: Featured Article
Cost Saving with VFD and its built-in PLC (SoftPLC)
By Elmir Rahimpour, Former Automation & Integration Specialist, WEG Canada
In conventional applications, pumps or fan should be run at full speed, then pressure or flow should be controlled with a control valves hence some energy will be wasted when you throttling control valves. One of the major usages of VFD is cost saving through energy saving.
But we want to look from different angle of cost saving which is capital saving through removing some instrumentation and control valves and utilize VFD with built-in PLC.
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