PWM soleniods: failure due to abuse
 |
 |
1. Over-voltage. 12 volts applied to this 3 ohm coil for less than 1 minute.170 c =360 F. Yes, that is smoke you can see in the enlargement.
2. Electrical Failure. The coil from a PWM solenoid you can see in the enlargement had a nicked magnet wire and low resistance. Under power it shorted out, got really hot!
Click on an illustration to see an enlargement.
© Scott Kirkendall
Other related articles:
On-off solenoids: Failure due to contaminationOn-off solenoids: Failure due to wear
On-off solenoids: Failure due to abuse
On-off solenoids: Failure due to heat
On-off solenoids: Failure due to electrical causes
PWM solenoids: Failure due to contamination
PWM solenoids: Failure due to wear
PWM solenoids: Failure due to heat
Proportional solenoids: Failure due to contamination
Proportional solenoids: Failure due to wear
Proportional solenoids: Failure due to abuse
Proportionalsolenoids: Failure due to heat
Replace and reuse rules
Failure review chart