How to detect the type of Omron relay

Create Date: 2024-8-30 12:03:23|Source: Omron/Omron

1. Measuring contact resistor

Use the resistor file of the universal meter to measure the normally closed contact and the moving point resistor, and its resistance should be 0; The resistance of the normally open contact and the moving point is infinite. This makes it possible to distinguish which is a normally closed contact and which is normally open.

2. Test the coil resistance

The resistance of the solenoid coil of the Omron relay can be measured in the R×12Ω range of the universal meter, and then the solenoid coil can be distinguished whether there is an open circuit problem.

3. Measure the pick-up working voltage and the amount of pick-up current

Call the adjustable regulated power supply and the galvanometer, type two sets of working voltages to the Omron relay, and serial the galvanometer in the control loop of the power supply system for detection. Gradually, increase the working voltage of the switching power supply, and record the working voltage and the amount of current when you hear the sound of Omron relay settling. It can be found, and you can try several times to find the mean.

4. Measure the released working voltage and the amount of current released

When the Omron relay produces a pick-up, then slowly reduce the working voltage of the power supply system, when the Omron relay is released again, the working voltage and current amount are recorded, and the working voltage and current amount are recorded at this time, so as to try to get the average release of the working voltage and the amount of current released several times. Under normal circumstances, the working voltage of Omron relay is about 12-60% of the pick-up working voltage, if the released working voltage is very small (less than 1/12 of the pick-up working voltage), everything can not be used normally, which will lead to a threat to the reliability of the power supply circuit.

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