Motor speed sensor for demanding applications
Motor speed is usually measured by an internal sensor bearing or an optical encoder with fixed pulse counts, whereby a separate sensor or code disc (code wheel) is required for each pulse count. This has a negative effect on flexibility and storage.
When sensor bearings are used, the electronic unit is frequently not rugged enough and so is susceptible to external causes of malfunction. In addition, the time involved in servicing internal sensors and consequent loss of availability in the event of a sensor malfunction brings considerable expense.
To tackle this problem, Contelec has launched an innovative sensor concept. This makes use of a slim external sensor to measure the speed of the main shaft without any physical contact between the magnetic actuator and sensor unit.
The sensor unit is attached to the reverse of the motor or to the fan housing and aligned. Preconfigured sensors can be supplied.
Contact: Variohm EuroSensor
