Reasons For Partial Failure Of Solid State Relay Coils

1. The reason why the coil often disconnects: whether ultrasonic waves are used to clean the solid-state relay, or an overvoltage is added to the coil, which may cause the coil to disconnect.
2. The cause of the failure of insufficient power provided by the coil: First, the voltage of the solid-state relay coil needs to be confirmed. If the voltage supplying the coil is less than the operating voltage, the contact will not operate.
3. The cause of the fault of reversed polarity of the coil: Check whether the diode inside the relay has reversed polarity, which will cause the contact to not operate.
4. The reason for the error in AC and DC power supply of the coil: If a DC voltage is added to the solid-state relay coil of the AC coil, the coil will heat up, which is likely to cause burnout. Similarly, if the relay of the DC coil is If AC voltage is added to the coil, the movable iron piece will vibrate repeatedly and cannot work properly.
5. If the coil part is energized for a long time, it will cause the coil to heat up and the insulation to deteriorate, causing the solid-state relay to malfunction.