AO2000-LS25 Laser Analyzer

TRecently, in the project, we encountered communication between PLC and Tianchuan Electric Frequency Converter Modbus through Modbus to Profinet (Profinet to Modbus) gateway. In this case, we need to connect the PLC and Tianchuan Electric Frequency Converter to achieve data transmission and control. This case is a configuration case where a Modbus to Profinet (Profinet to modbus) gateway is used to connect the Tianchuan Electric T600 series frequency converter to the PLC. The equipment used is the Siemens S7-1200 PLC, the Kaijiang Intelligent Modbus to Profinet (Profinet to modbus) gateway, and the Tianchuan Electric T600 series frequency converter.The device also includes diagnostic interfaces, M12 connectors for sensors and actuators, and a protocol based encoder interface with NORDAC ON+attachment, which has good anti-interference protection.

The principle of a leakage protector is that the zero sequence current is zero. When using a frequency converter, the zero sequence current cannot be zero.

The output side of the frequency converter is a PWM wave, and there is a capacitance effect of a long cable between the motor cable and the ground. When using a cable with a shielding layer, the capacitance effect is more obvious. During the operation of the frequency converter, the capacitor is being charged and discharged, and current flows into the ground through the capacitor, which then flows back to the frequency converter from the grounding wire on the incoming side, forming a current circuit. If a leakage protector is used on the incoming side, it will act and cut off the system operation.

SO, don't equip your frequency converter with a leakage protector. If you want to ensure safety, just do a good job of grounding the equipment.

Today we will explain an important concept of frequency converters: frequency sources, and some brands may refer to them as given channels. In fact, what we are talking about is the same thing. Previously, as long as a running command was given to the frequency converter, it was already running. However, if the frequency was not given and the frequency was set to 0 at this time, even if the frequency converter was already running, the motor would not rotate due to the output frequency of the frequency converter being 0. Therefore, in general, both the command source and frequency source need to be given simultaneously. The command source is responsible for starting and the frequency source is responsible for controlling the speed, Only in this way can a frequency converter be used to control the motor for speed regulation.

Contact information: 15359293870

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Contact person: KELLY

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4 digital inputs, 1 analog input, and 1 relay output.

Product specifications:

Starting torque: 180% at 3 Hz, 200% at 5 Hz (vector)

Carrier frequency: 1-15 KHz

Control method: SVPWM, V/F control, magnetic flux vector control

Output frequency: 0-650.00 Hz

Starting torque: 180% at 3 Hz, 200% at 5 Hz (flux vector)

Protection function: output short circuit, overcurrent/voltage, low voltage, motor overheating, IGBT overheating, grounding/leakage, communication abnormality protection

Cooling method: 0.4KW product natural cooling, other air cooling

Display functions: output frequency, output current, output voltage, output power, alarm recording (up to 12 sets), etc

LED light: frequency monitoring, voltage monitoring, current monitoring, motor operation indication, control mode indication, external operation panel indication

Surrounding temperature: -10~+50 ℃ (unfrozen)

Surrounding humidity: below 90% Rh (without condensation)

Storage temperature: -20~+65 ℃

Protection level: IP20

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