The Characteristic and Failure Symptoms of Speed Sensor for Cummins Electronic Diesel Generator Sets

There are various sensors for electronic diesel generators, including pressure sensors, temperature sensors, and speed sensors. The speed sensor used in Cummins diesel generator sets employs magnetic sensing resistors as the sensing element and represents a new type of speed sensor. With magnetic sensing resistors as its core detection component and a new signal processing circuit to reduce noise, its performance is further enhanced.

Its characteristics are following:

1.       High flexibility

2.       High reliability

3.       Long-term service life

4.       long triggering distance

5.       Signal triggering uses ferromagnetic (soft) materials

6.       Can achieve the long-distance transmission

7.       Equipped with the impact resistance and shock resistance

The speed sensor monitors the flywheel speed of the diesel generator set to maintain a fixed 1500 or 1800 rpm, ensuring stable voltage and frequency output. Once the speed sensor fails, it will disrupt the startup and operation of the diesel generator set and prevent it from starting normally. Since most current speed sensors are of the magnetic pulse type, they generate a weak electrical signal, which can be detected using a multimeter or oscilloscope. The failure symptoms of the speed sensor for Cummins diesel generator sets are as follows:

1.       The generator runs unstably at idle speed.

2.       May experience momentary hesitation or stalling during operating.

3.       The load performance of diesel generators is degraded.

4.       The speed displayed on the gauge is inaccurate.

5.       Diesel generators’ fault light on.

These are the characteristics and common fault symptoms of the speed sensor for Cummins diesel generator sets, compiled by Dingbo Power. We remind you that various sensors on diesel generator sets are extremely critical. Any fault or abnormality should be taken seriously to avoid accidents.

If you have any problems of diesel generator sets, you can contact us at dingbo@dieselgeneratortech.com.