Although this is not a common problem of AC contactors, the failure of AC contactors to engage will affect the efficiency of operation and even damage the production equipment.
What if the solenoid coil causes a pick-up problem? Delixi Electric teaches you to test, assuming that the test results are the existence of additional voltage, but the additional voltage and the parameters of the electromagnetic coil have a certain distance, usually means that the electromagnetic coil may present a problem, assuming that the additional voltage exists, and the same as the low-voltage AC contactor parameter specification, most of the problems caused by the electromagnetic coil, perhaps the need to replace the electromagnetic coil to be able to deal with the suction problem.
What should I do if the control loop causes a suction problem? Under normal circumstances, when looking for a problem with the low-voltage AC contactor equipment, the corresponding tools need to be prepared, and the homework that needs to be done is to test both sides of the electromagnetic coil, if the test result is that there is no additional voltage, it means that the cause of the problem is closely related to the control loop, and you can check whether the control loop is faulty. Defects in the control circuit and solenoid coil usually lead to the engagement of the low-voltage communication contactor, so it is important to always check the equipment components and perform excellent maintenance work on the low-voltage communication contactor.
To sum up, assuming that the Delixi communication contactor presents a situation that cannot be sucked, it is comprehensively investigated from the following conditions:
1. The contactor coil is broken
2. Check whether the power supply voltage reaches more than 85% of the additional voltage, which is the minimum requirement for the contactor coil suction voltage
3. Check whether the applicable voltage level of the contactor coil corresponds to the power supply, and see whether the voltage is 220V or 380V
4. Check whether the power supply is communication or DC
5. Check whether the power switch is turned on and whether the starting circuit is open
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