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Mitsubishi FREQROL FR-A7 FR-A740-00310-EC

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FR-A740-00310-EC

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The Mitsubishi FR-A740-00310-EC is a variable-speed drive. Its power rating is 3.7 kW, equivalent to 5 horsepower, and it operates on a 3-phase input voltage of 380-480 V AC.

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Technical specifications for FR-A740-00310-EC

ManufacturerMitsubishi
Product TypeVariable Speed Drive (VSD/VFD)
Product LineFREQROL FR-A7
Part NumberFR-A740-00310-EC
Weight7.50 lbs (3.40 kg)
Power Rating3.7 kW / 5 HP
Input Voltage380-480 V AC (3-phase)
Input Current31 A
Output Frequency0.2-400 Hz
Control MethodVector control (for high torque, wide speed range)
Cooling MethodForced air cooling
Overload Capacity120% of rated output current for 60 seconds/ 150% of rated output current for 3 seconds
EfficiencyHigh efficiency at rated power (typically 95% or above)
Operating Temperature Range0°C to 50°C
Storage Temperature Range-20°C to 65°C
Mounting OrientationVertical or horizontal
DisplayLED or LCD display for monitoring parameters (input, output, fault codes)
Communication ProtocolModbus RTU
Protection FeaturesOvervoltage, undervoltage, overcurrent, short circuit, and overtemperature protection
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Mitsubishi's FR-A740-00310-EC is a variable speed drive (VSD/VFD) designed for precision motor control applications. It operates within a 3-phase input voltage range of 380 to 480 V AC and pulls an input current of 31 A. This unit delivers an output frequency adjustable between 0.2 and 400 Hz, making it suitable for various motor speed requirements.

This drive uses vector control methodology to provide high torque capabilities throughout a wide speed range. The forced air cooling system maintains optimal operational temperatures, extending the drive’s performance. It can handle overloads, rated at 120% of output current for up to 60 seconds, and supports 150% for brief durations of 3 seconds. The device is designed for efficiency, typically achieving at least 95% when at rated power, illustrating its effectiveness in energy use.

The operating temperature for this drive lies between 0°C to 50°C, with storage capabilities from -20°C to 65°C. Users can mount the drive vertically or horizontally to accommodate different installation requirements. It features an LED or LCD for easy parameter monitoring, providing real-time input, output, and feedback on fault conditions. Additionally, it utilizes the Modbus RTU communication protocol, enhancing its compatibility with other devices. The unit is safeguarded by several protection features, including overvoltage, undervoltage, overcurrent, short circuit, and overtemperature protections, ensuring reliable performance in diverse operating conditions.