Control of electric valves
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Does a 220V electric valve require an AC contactor for control? Can it be controlled directly using the contacts of the intermediate relay? Control chart: Is the start and stop of the electric valve controlled by the normally open and normally closed contacts of an intermediate relay? Is this okay? What are the advantages and disadvantages?
Sure, that’s how it’s controlled anyway
Is the contact capacity of the relay sufficient (selected based on the motor power)?； Using relay control directly – will this lead to an expansion of the scope of the fault in case of a problem? Consider the components and control methods used in the control loop from these two aspects.