Measurement of positive and negative poles of DC solenoid valve
Thread Content
How does everyone measure it? Thank you
There are markings on the solenoid valves, right? DC valves are marked with +- while AC valves are marked with LN
Collect more identification methods; diodes are connected in parallel inside the coil of DC solenoid valves. If the polarity of the solenoid is reversed, it can damage the power supply, so it is necessary to identify this issue. I’m interested in knowing how others go about identifying it
Since there’s a diode, can’t we just use the diode function on a multimeter to determine it?
With the coils connected in parallel, it seems impossible to measure
Follow the markings where they are present; if none, connect arbitrarily
DC solenoid valves do not have positive or negative poles.
Try the resistance setting on a multimeter; the resistance in the forward direction might be low. I can’t remember whether the resistance setting can drive the diode.
The positive and negative poles only affect the LED indicator light. If your solenoid valve doesn’t have a light, connect it randomly. Lamps can also be connected randomly. If the wrong light is connected, it won’t light up. Then you just swap them around.