Semiconductor pressure-reducing controller connected in parallel with - wiring system using electromagnetic contactor

摘要

The present invention relates to a contact- And to provide a semiconductor type reduced pressure controller which can be installed in parallel with a motor drive circuit of a wiring system.;In order to achieve this, A semiconductor short-circuiting device is installed in the primary power supply side of the motor in parallel with the motor drive circuit composed of a wiring type electromagnetic contactor, and a semiconductor short-circuiting device capable of supplying in-phase power to the secondary terminal side of the motor is provided. It is an object of the present invention of such a pressure reducing controller that it takes a long time to complete recovery when a semiconductor decompression controller in operation occurs, thereby causing a great loss in the production process. Therefore, in order to prevent such a long-If the semiconductor pressure reducing controller is in trouble, The motor is switched to the wiring type motor drive circuit and the effect of suppressing the occurrence of the overcurrent when the motor is re-circulated is obtained.