EXCLUSIVE FORUM FOR MACHINE DISMANTLERS AND REPAIR PEOPLE > Dolton IL
> Heavy Machinery
> Electrical
> AC Single Phase
> New mitsubishi fr-A740-00440-na inverter drive 30HP
New mitsubishi fr-A740-00440-na inverter drive 30HP
The new FR-A700 frequency inverters combine innovative functions and reliable technology with maximum power, economy and flexibility. The FR-A700 is particularly well suited for demanding applications like cranes and lifting gear, high-bay warehousing systems, extruders, centrifuges and winding machines.
Model FR-A740-00440-NA Serial L77U42
30 hp 44 amps Voltage: 380-480V 50/60hz
Weight: 28.6 lbs Height 15.8 (400) Width 9.8 (250) Depth7.5 (190)
20% torque/continuous (brake transistor included)
Rated Input AC Voltage - Frequency: 3ph 380-480V 50/60hz
Permissible AC Voltage Fluctuation: 323-528V 50/60hz
Permissible Frequency Fluctuation: +/-5%
Protective Structure: Enclosed Type-UL Type 1
Cooling System: Forced Air Cooling
What can you expect from Mitsubishi FR-A700?
Precision without encoders Even without encoders the FR-A700 continuously calculates the optimum magnetic flux for every operating state. This now makes it possible to use inverters for many applications that were previously the exclusive domain of DC or closed-loop vector drives.
Ultra-precise speed and torque When operated with an encoder, the FR-A700 drives impress with ultra-precise speeds across the entire control range (precision 0.01 %) and extremely exact torque control ( 10 % precision and 5 % repeatability).
Autotuning This new generation of inverters has an autotuning function that can obtain all the necessary specifications from the motor in less than a minute, even when the motor is not running.
Network capabilities It comes with both a USB port and a connection for Modbus-RTU as standard equipment. Support is also available for Profibus, CC-Link, CANopen and the SSCNET III motion control network.
Self-diagnostics prevent downtime This inverter actively monitors its own functions. For example, a pre-alarm is triggered automatically if the fan performance drops to 40 %.
Long service life guaranteed Mitsubishi Electric frequency inverter drives are known for their long service life, however the FR-A700 sets even higher standards in this area. Its key components are designed for a life of over 10 years.
Comprehensive PLC expertise The integrated PLC functions of the FR-A700 series enable precise configuration for individual application needs. In addition to this, the inverter can even control simple applications itself without any support from other controllers.
User-friendly operation Setup is performed with the FR Configurator program, which can also download, store and document application data. Oscilloscope and machine analysis functions help the user to optimise the drive system. Data and settings from the predecessor series can be imported directly and converted for use in the new models.
Four overload ranges The FR-A700 fully supports four overload ranges, which makes it very easy to select the right inverter for every application.
Mitsubishi Electric s RSV technology gives you class-leading
power, control and flexibility.
What makes RSV (Real Sensorless Vector) special?
Mitsubishi s Real Sensorless Vector or RSV motor control system provides unequalled dynamic performance, ensuring a wider speed range, smoother operation and lower motor currents than ever before. RSV starts with a highly accurate motor map , obtained during an auto-tune procedure which applies alternating voltage to the motor and determines critical motor characteristics. At the heart of RSV is the Adaptive Flux Observer system which compares actual motor behavior during operation with the theoretical model. Instead of a response to a change in load or speed being fixed, any variations between the theoretical and the actual motor response measured in operation are analyzed by the Flux Observer, which constantly refines the motor map as speed and load conditions change. Speed Control with or without torque limit 200:1 range, driving or overhauling* Open Loop Torque Control including torque at zero speed * Regenerative or dynamic braking accessory may be needed depending on drive type and application.
A700 programmability provides true intelligence inside the drive a simple solution for complex applications
A700 uses servo-drive technology to compensate automatically for changes in load inertia
Keeps the motor under control even if supply power is lost
Allows simple connection to new FR-Configurator software for quick and easy commissioning
Mitsubishi Electric s new RSV algorithm gives 200:1 speed range open loop.
300 rads/sec response time means lightning fast response to sudden load changes
On-line auto-tune feature compensates for motor temperature changes
Pulse train input for accurate speed control
Sink/Source logic selectable
Removable Control Terminal Block for easy maintenance
