Carding Machine Case - Goodrive200A Series Inverter

Goodrive200A has improved the over-temperature threshold and temperature pre-alarm function to make it more suitable for textile industry,

The carding machine works by opening individual fibers and eliminating impurities of the cotton rolls or the chemical fiber fed by the hopper or the former working process, thus straightening the curly cotton rolls while removing the neps, impurities and short fibers left by the blowing process, and then store the integrated slivers into the cotton cylinder to be used in the drawing process.

Control requirement

This document takes field requirements for the application of INVT inverter as an example, as shown in fig 2. The system requires one 4 kW inverter to control doffer speed and one 0.75 kW inverter to control the feeding of roller. The requirements on the inverter and control performance are listed below:

● Low-frequency and large-torque output, as cylinder inertia is too large, it requires large torque during low-speed startup;

● Quick stabilization at stop;

● Analog output speed regulation, linearize the analog output to the max. extent;

● Stable output voltage and small starting current;

● Good adaptability to the environment, especially to the high temperature and fiber-intensive environment of textile industry;

● Realize compatibility with part of the communication programs by modifying PLC program.

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The market share of Koyo PLC is much less than Simens and Mitsubishi, however, it did capture a certain amount of market share in textile industry. Currently, such devices need to be remodeled as most of the old PLC and communication adopt Modbus-ASCII mode, therefore, Goodrive200A provides some convenience in this respect, and it has improved the over-temperature threshold and temperature pre-alarm function to make it more suitable for textile industry, especially the remodeling market. This inverter is armed with multiple kinds of protections and fault output functions eg short circuit, overload, overvoltage, phase loss and stall protection to ensure the system can run safely and efficiently.

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