The OMRON VFD 3G3RX-A2550 is a high-performance general-purpose frequency converter suitable for a variety of industrial automation scenarios. It’s rated voltage is three-phase AC200V, and the maximum applicable motor capacity is 55kW. This OMRON VFD has a powerful driving function, is easy to program, focuses on environmental protection, and can be widely used for driving and control of equipment such as conveyors, fans, and pumps. Additionally, the 3G3RX-A2550 is compatible with OMRON Connect devices, enabling seamless integration into IoT-enabled systems for real-time monitoring, data collection, and remote control. The OMRON brand continues to provide innovative solutions that enhance productivity, precision, and connectivity in industrial environments.

Product Details Product Specifications
Rated Voltage: Three - phase AC200V
Maximum Applicable Motor Capacity: 55kW
Output Frequency Range: 0.00 to 590.00Hz
Control Mode: Supports open - loop and closed - loop vector control
Protection Class: IP20
Environmental Adaptability: Operating temperature - 10℃ to 40℃ (low load)
Product Features
High Starting Torque: Can output up to 200% starting torque at low frequency.
Energy - saving Function: Further energy - saving through PM motor auto - tuning function.
Safety Function: Supports Safety Torque Off (STO) function, meeting international safety standards.
Long - life Design: Uses long - life consumable components such as capacitors and fans to extend equipment life.
Application Scenarios
Conveyor Drive: In logistics, food processing and other industries, used to control the start, stop and speed adjustment of conveyors.
Fan and Pump Control: In HVAC, water treatment and other fields, used to adjust the speed of fans and pumps to achieve energy - saving and consumption - reduction.
Machine Tooling Equipment: Such as lathes, drilling machines, etc., by precisely controlling the motor speed, improve processing accuracy and product quality.
Usage Instructions Installation and Wiring
Installation Environment: Choose an environment free of dust, corrosive gases, and strong electromagnetic interference, and ensure good heat dissipation of the equipment.
Wiring Requirements: Wire strictly according to the wiring diagram in the product manual, ensuring the correct connection of power lines, signal lines, and motor lines. Additionally, integrate Omron Connect devices as specified in the manual to enable seamless communication and monitoring between the system components. Ensure all Omron Connect devices are properly configured and connected to the network for optimal performance.
Grounding Protection: Omron brand Ensures good grounding of the equipment, in accordance with national and local electrical safety regulations.
Parameter Settings
Basic Parameter Settings: Including motor parameters, control mode, frequency range, etc., set reasonably according to actual application requirements.
Advanced Function Configuration: Such as PID control, multi - speed control, etc., configure according to specific application scenarios to achieve more complex control functions.
Maintenance and Inspection
Regular Inspection: Check whether the appearance of the OMRON vfd is damaged, whether the heat sink is dusty, and whether the fan is running normally.
Parameter Verification: Regularly verify the parameter settings of the frequency converter to ensure they are consistent with actual application requirements.
Fault Diagnosis: When the equipment fails, check the fault code in time and troubleshoot and handle it according to the fault diagnosis guide in the instruction manual. Precautions
Environmental Conditions: Avoid using the product in high - temperature, high - humidity, strong electromagnetic interference and other environments to avoid affecting its performance and life.
Power Supply Requirements: Omron brand ensures stable power supply voltage and avoid voltage fluctuations that may damage the OMRON vfd.
Safe Operation: Avoid contact with live parts during equipment operation to ensure the safety of operators.
Frequently Asked Questions FAQ
How to perform motor self - tuning on the frequency converter?
Motor self - tuning is an important step to ensure the matching of the frequency converter and the motor, which can improve control accuracy and system stability. Before self - tuning, set the nameplate parameters of the motor, including motor power, rated voltage, rated current, etc.
During the self - tuning process, the frequency converter will inject current into the motor, so it is necessary to ensure that the motor and the frequency converter are correctly connected, and the frequency converter is in a ready - to - use state. At the same time, ensure that the motor is in a stationary state to avoid damaging the motor during the self - tuning process.
After completing the self - tuning, the frequency converter will automatically adjust the control parameters according to the actual parameters of the motor to achieve the best running effect. This helps to improve the system's response speed and control accuracy, meeting the application requirements of high - precision control.
How to configure the communication interface?
This frequency converter is equipped with Modbus - RTU protocol and supports RS485 communication interface. Users can configure the communication interface according to their actual needs.
When configuring the communication interface, ensure the correct connection of the communication line, including any Omron Connect devices integrated into the system. Use shielded cables for connection and ensure good grounding of the cable shield to reduce electromagnetic interference. Properly connect and configure the Omron Connect devices to maintain reliable communication and optimal performance within the network.
According to the requirements of the communication protocol, set the communication address, baud rate, data bits, stop bits and other parameters of the frequency converter. At the same time, ensure that the communication parameters of the upper - level machine are consistent to achieve reliable communication connection.
How to choose the power range of the frequency converter?
When choosing the power range of the frequency converter, it is necessary to determine according to the actual load condition of the motor. If the load is light, a frequency converter matching the rated power of the motor can be selected; if the load is heavy or there is a large starting torque requirement, a frequency converter with a slightly larger power should be selected.
When choosing the power range, the safety factor of the system should also be considered. It is usually recommended to select a frequency converter slightly larger than the rated power of the motor to cope with load fluctuations and emergencies.
The 3G3RX - A2550 frequency converter is suitable for motors up to 55kW, and users should choose the appropriate power range according to their actual application requirements.
What is the cooling method?
This frequency converter uses forced air cooling for heat dissipation, with built - in cooling fans.
When installing the frequency converter, ensure there is enough space around it for air circulation. Avoid installing the frequency converter in a sealed or poorly ventilated environment to prevent affecting the cooling effect.
Regularly clean the dust on the fans and heat sinks to effectively prevent equipment overheating due to poor heat dissipation. At the same time, check the operation of the fans to ensure they are working properly.
How to avoid electromagnetic interference?
The frequency converter is equipped with an EMC filter that meets relevant electromagnetic compatibility standards and can effectively suppress electromagnetic interference.
When wiring, try to avoid placing signal lines close to power lines to reduce electromagnetic interference. At the same time, use shielded cables for signal line connections and ensure good grounding of the shield.
Ensure good grounding of the equipment and comply with national and local electrical safety regulations.
What are the protection functions?
This frequency converter has a variety of protection functions such as overload protection, over - temperature protection, over - voltage and under - voltage protection.
When the motor load exceeds the rated value, the frequency converter will automatically reduce the frequency or stop running to protect the motor and the frequency converter.
The frequency converter is equipped with a temperature sensor. When the temperature exceeds the set value, it will automatically shut down to prevent damage caused by overheating.
How to perform regular maintenance?
Regularly check whether the appearance of the frequency converter is damaged or abnormal, such as whether the casing is cracked or whether the screws are loose.
Clean the dust on the fans and heat sinks to ensure the normal operation of the cooling system. Check the operation of the fans and replace them in time if there are any abnormalities.
Check whether the connections of the power supply and signal lines are firm and ensure good contact. At the same time, check whether the operation of the motor is normal and deal with any abnormal situations in time.
What should be noted during installation?
The installation should be carried out in an environment with good ventilation, free of dust and corrosive gases. Avoid installing the frequency converter in high - temperature, high - humidity or strong electromagnetic interference environments.
Ensure that the frequency converter is installed vertically to facilitate heat dissipation. When installing, use the appropriate fixing method to avoid vibration affecting the equipment.
When connecting the power supply, ensure that the specifications of the power line meet the requirements and pay attention to the correctness of the phase sequence. At the same time, ensure good grounding of the equipment.
How to choose the control mode?
For applications requiring high - precision speed control, choose the sensorless vector control mode; for general constant - speed control applications, choose the V/F control mode.
The sensorless vector control mode can achieve high - precision speed and torque control and is suitable for occasions with high requirements for control accuracy; the V/F control mode is simple and easy to use and is suitable for general constant - speed control.
After selecting the control mode, make corresponding parameter settings according to specific application requirements to achieve the best control effect.
How to set the frequency setting channel of the frequency converter?
The frequency setting of the frequency converter can be made through the frequency converter panel, external analog signal or digital signal, etc. Users can choose the appropriate frequency setting method according to their actual application requirements.
When setting the frequency setting channel, ensure the stability and accuracy of the signal source. For example, when using an external analog signal for frequency setting, ensure the stability and anti - interference ability of the signal.
Make corresponding parameter settings according to the selected frequency setting method. For example, for external analog signal setting, set the input range of the signal and the corresponding frequency range.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a one-stop integrated service provider of intelligent manufacturing, belongs to the Gong Doctor Group, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1). Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3). At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.