DIGITAL MOTOR CONTROL CENTER UNIT USING CONTACT-POINTLESS DEVICE

摘要

PURPOSE: the unit of digital motor control centre, which provides, prevents surge current and power device/interruption for generating is to motor and in order to shorten installation and be kept for the required time, and it is cheap to produce absolute atmosphere. CONSTITUTION: a kind of digital motor control centre unit includes contact points and brushes tension gauge driver (52,54) contact driver (52,54) and controller (70). The power that the contact points and brushes tension gauge driver (52,54) initially enters gradually increases, until reach normal motor driving voltage the predetermined time and be applied to outside. The contact driver (52,54) reaches opening state normal voltage after contact points and brushes tension gauge is driven, and applies cut-in voltage to outside. Controller (70) determination applies power to outside, and whether the contact continuously normal by the driver according to input.