Vacon Oyj

Vacon Oy

Paavo Merilinna

Kimmo Rajakangas

Hans Carlsson

Thermistor monitoring arrangement of an alternating-current electric motor controlled by a power transformer, such as a frequency converter, for at least one thermistor monitoring the temperature of the motor, in which is a power transformer (), in which is a power stage () and a control unit (), controlling an alternating-current electric motor () provided with a thermistor (), and into which power transformer, such as a frequency converter, an input circuit connected to a thermistor located in the motor is integrated, to which input circuit a safety circuit (a so-called Safe Stop circuit) that prevents unexpected starting or ensures safe stopping of the frequency converter is connected.

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Vaasa, Finland

Paavo Merilinna