Vacon has developed an ATEX-certified thermistor input which is fully integrated in the drive. Certified and compliant with the European ATEX directive 94/9/EC, the integrated thermistor input is designed for the temperature supervision of motors that are placed in potentially hazardous areas. However, the drives as such cannot be placed in a hazardous area. This feature simplifies the use of drives together with Ex motors, ie motors that are designed and certified for use in potentially explosive environments. If overtemperature is detected, the drive stops feeding energy to the motor and thus further heating of the motor is avoided. As no external components are needed, the cabling is kept to a minimum. This improves reliability and saves both space and costs.

Explosive atmospheres where supervision of motor temperatures is required are widely found in the chemical, petrochemical and oil drilling industries, etc

Enter 80A or 'tick' at www.engineerlive.com/ede

Vacon Plc is based in Vaasa, Finland. www.vacon.com