EJE, EJK, EJL

The PI system uses the parameter identification process to measure characteristic motor parameters such as resistance, magnetic flux, core loss, friction-moment, etc. This method makes it possible to determine the motor characteristic curves without load-coupling, whereby there are considerable speed advantages compared to conventional methods. Through deviations from specific parameters conclusions can be made concerning manufacturing errors like false or short-circuited windings, false magnetization, too high bearing or brush friction, etc.

Fully automatic testing permits the EJL diagnostic system to include one or more of the following: Parameter identification, single or multi-channel objective noise testing and an air-borne sound test (optional). The easy change over for various motor types guarantees flexible application.
As with all PI/VAD systems, a powerful industrial PC is used for measured data processing and control of the testing sequence. Software modules tailored to the application allow a precise evaluation and help to ensure product quality.

The objective noise test provided by the diagnostic system can be used in many areas of industrial manufacturing and allows simple and cost-effective quality assurance. Within the framework of vibro-acoustic diagnosis the noise spectrum obtained from the test motor is analyzed to identify defective components through characteristic noise features. The VAD system is adaptive and can be calibrated to recognize quality-relevant noises or noise components on the basis of a reference noise pattern. No other method that can so effecttively test the constructional measures – for a quieter, vibration-free, more comfortable product.