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Product Description
The Mitsubishi FR-A740-3.7K-CHT inverter, from the FREQROL FR series, is a 3.7 kW, 400V-class (380-480 VAC) 3-phase motor control solution. It delivers up to 9 Amps output current, supports 50/60 Hz input, and offers a 6.9 kVA rated output capacity (9 kVA power supply capacity). Its IP20-rated, forced-air-cooled design weighs 3.8 kg, providing reliable performance in environments with limited dust and moisture.
Is Your Device Showing These Signs?
The Mitsubishi FR-A740-3.7K-CHT frequently experiences failures related to the electrolytic capacitors on the main control board, causing over-voltage faults and communication errors on the RS485 Modbus network. IGBT degradation leads to overcurrent trips and ground faults, requiring replacement of the power module. Cooling fan failures cause overheating, triggering thermal overload protection and derating performance. Parameter corruption in the EEPROM necessitates reprogramming and drive recalibration. Inadequate line reactors or improper grounding result in nuisance tripping and electromagnetic interference, affecting the drive's operation and nearby equipment.
Technical specifications
The Mitsubishi FR-A740-3.7K-CHT inverter is a 3.7 kW, 400V-class 3-phase motor controller with 9 Amps output, 50/60 Hz input, and 6.9 kVA rated output. It features an IP20-rated, forced-air-cooled design and weighs 3.8 kg.
Our Repair Process for the
FR-A740-3.7K-CHT
Our repair process for the Mitsubishi FR-A740-3.7K-CHT begins with a comprehensive diagnostic evaluation to pinpoint the failure. Electrolytic capacitors on the main control board are replaced to resolve over-voltage faults and communication errors. IGBT degradation is addressed through power module replacement, correcting overcurrent trips and ground faults. Cooling fan failures are rectified with fan replacement to prevent overheating and thermal overloads. Parameter corruption in the EEPROM requires reprogramming and drive recalibration to restore proper function. Inadequate line reactors or improper grounding issues are resolved through the installation of appropriate reactors and verification of grounding integrity, mitigating nuisance tripping and electromagnetic interference.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY