Soft starter with detachable interface

Abstract

The invention provides a soft starter with a detachable interface. The soft starter comprises a main board controller controlled by a single chip microcomputer. The main board controller comprises a three-phase phase input module, an ADC input module, a power supply module, a three-phase output drive module and a relay output module. The soft starter is characterized in that the main board controller further comprises an extension port of the single chip microcomputer, the extension port is at least in extended communication connection with an IO port module, an ADC port module and a DAC port module, and the IO port module, the ADC port module and the DAC port module and the main board controller are in detachable connection. Compared with a traditional soft starter, the soft starter simplifies circuit design of the main board controller and reduces sizes of hardware structures of the whole soft starter. By means of the simplified circuit design, the use quantity of electronic components is reduced, cost is reduced, flexible and variable choices are available according to requirements of different clients, and the aim that the soft starter meets the requirements of different clients is achieved.

Description

technical field

[0001] The invention relates to a soft starter used in conjunction with a motor, in particular to a soft starter designed with an interface module and a main board controller separated, belonging to electrical control equipment. Background technique

[0002] The motor soft starter is a motor control device that integrates motor soft start, soft stop, light load energy saving and multiple protection functions. The motor soft starter uses the power device as a voltage regulator, and connects it between the power supply box and the motor through the terminal. When using the motor soft starter, the output voltage of the power device increases gradually, and the motor gradually accelerates. Conduction, so that the motor works under the rated voltage, and realizes the smooth start function. When the motor reaches the rated speed, the starting process is over, and the soft starter automatically replaces the power device that has completed the starting task with a b...

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