MR474E Frequency Inverter Electrical Training Equipment Vocational Training Equipment
1. Equipment introduction
1.1 Overview
Through relevant experiments, the inverter of this training device can help students become familiar with the use of various industrial control components, master their control principles and methods, and cultivate students' corresponding knowledge and skills. It is suitable for higher vocational schools, junior colleges, secondary vocational schools and technical schools. Teaching and skills training assessment in related majors.
Frequency converter (Variable-frequency Drive, VFD) is a power control device that applies microelectronics technology and frequency conversion technology to control the speed and other performance of AC motors by changing the frequency of the power supply when the motor is working.
The frequency converter hanging box is an electrical device mainly used to control the frequency conversion speed regulation of AC motors. It adjusts the speed of the motor by changing the frequency of the power supply, thereby achieving precise speed control and energy saving
The frequency converter is mainly composed of rectifier (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit, microprocessing unit, etc. The inverter relies on the switching of the internal IGBT to adjust the voltage and frequency of the output power supply, and provides the required power supply voltage according to the actual working environment and working needs of the motor, thereby achieving the purpose of adjusting the speed of the motor. In addition, the frequency converter also has some protection functions for the motor, such as overcurrent, overvoltage, overload protection, etc.
1.2 Features
1. The hanging box adopts a polyethylene frame structure, which is simple and elegant overall. An aluminum profile is installed at the bottom, which can be flexibly moved and the position can be adjusted individually according to the condition of the cross beam.
2. Equipped with Siemens frequency converter and fully equipped.
3. The combination of software and hardware can complete practical training content for a variety of subjects
4. The practical training hanging box has a good safety protection system.
2. Technical parameters
(1) Input power: three-phase 380V±10% 50Hz
(2) Overall dimensions: 260mm×200mm×300mm
(3) Overall machine capacity: about 2KVA
(4) Weight: about 2.5kg
(5) Ambient temperature -10℃～+40℃
(6) Relative humidity <85% (25℃)
3. Components list and detailed introduction
3.1 Main part
No. Name
1 Siemens frequency converter
2 K4 terminal port
3 2mm terminal opening
3.2 Accessories
No Name Qty
1 Blue 2mm terminal wire 4
2 Yellow 2mm terminal wire 4
3 Red 2mm terminal wire 2
4 Black 2mm terminal wire 2
5 Green 4mm safety electrical cable 2
6 Yellow 4mm safety electrical cable 2
7 Black 4mm safety electrical cable 1
8 Red 4mm safety electrical cable 2
9 Two-color 4mm safety electrical cable 1
4. Experiment list
Experiment 1 Frequency converter controls motor start and stop
Experiment 2 Frequency converter control motor start and stop experiment/external button combined with analog control
Experiment 3 Three-phase squirrel-cage asynchronous motor inverter control experiment/multi-speed control
Experiment 4 Three-phase squirrel-cage asynchronous motor star starting experiment through frequency converter speed regulation
