|Motor management policy and motor register
Motors are the largest energy user in most plastics processing and motor management is a necessity for modern plastics processing. Sites should create a simple Motor Management policy and decision matrix for the purchase and maintenance of all electric motors that covers:
Minimise the demand
Minimising the demand is the first step to managing any service and should be completed before optimizing the supply. It is not economic to optimize the supply based on excessive demand.
Turn it off
Turning motors off is one of the most effective methods of reducing energy usage. This can be done with timers, condition sensors, sequenced operation or by linking downstream equipment to the main processing machine.
Reduce the load
Reducing the load at source can be done by cleaning the systems or lowering pressures. The transmission systems (belt drives or gearboxes) should also be examined, e.g. toothed belts are 2-3% more efficient than standard V-belts.
Select the correct size motor
Operating motors at the maximum efficiency means getting the size right. Many motors are too large for the actual application and using a large motor for a small load increases energy use.
Optimise the supply
Improve motor efficiency
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