Motor protector data communication module

Abstract

The invention discloses a data communication module of a motor protector. The data communication module comprises a central processing unit, a storage unit, a power supply unit, a configurable module, a local application interface, field control interfaces and a connector assembly, wherein the field control interfaces comprise a status input interface, a status output interface, a data acquisition module and a data uploading interface; the connector assembly is used for signal connection; the data acquisition interface of the field control interfaces is arranged on the communication module for acquiring current, voltage, startup time, operation and fault data of a motor; the data uploading interface is arranged on the communication module for packing the acquired data according to the requirements set by the user and then uploading the packed data to an upper communication device for an upper acquisition system. The data communication module of the motor protector disclosed by the invention is used for judging whether data acquisition is carried out to the motor protector or not by monitoring the operation status of an MCC (Motor Control Center) switch cabinet motor protector, so that system does not waste redundant communication time.

Description

technical field [0001] The invention relates to a data communication module of a motor protector, which is an intelligent data acquisition device for a motor protector of an MCC switch cabinet. Background technique [0002] At present, my country's thermal power (or nuclear power, etc.) power plants, petrochemical, and steel industries are equipped with a large number of motors (motors). Many motor-supporting switch cabinets are equipped with motor protectors to pass the motor current and other signals through 4 -20mA signal is transmitted to the PLC or DCS system, but these signals basically do not require interlocking actions and are only used as a display of the motor running state, so many of these signals in the PLC / DCS system are only converted through the internal data of the control system; but they occupy the PLC A large number of channel resources of the / DCS system make the PLC / DCS system extremely large. [0003] Some users use the operation station (the operation...

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