Mitsubishi FR-F

With the frequency inverter series FR-F700 Mitsubishi Electric expands its popular inverter program, which is characterized by a high energy saving potential. Especially in the lower speed range and in the acceleration and deceleration phase drastic energy savings are achieved. The FR-F700 is available in the power range from 0.75 to 630 kW.

Innovative building management has different requirements for the planned drive systems today. More than ever flexible and scalable drives are in demand. Especially the heating, ventilation and air conditioning industry (HVAC) provides further requirements to usability, network capacity and of course reliability. In addition, the drive has to work economically – meaning minimal operating costs with maximum energy-saving potential.

With the frequency inverters of the FR-F700 series a modern and intelligent drive is available that can be easily integrated into complex building automation solutions. Particularly the FR-F700 is suitable for pumps and fans and applications with reduced overload, such as air-conditioning systems in building services and industry and extraction fan and wastewater engineering, ground water and heat pumps.

FR-F700 – Now also in protection class IP54 (see below FR-F746)

In addition to protection class IP00 / IP20, the frequency inverter in the power range up to 55kW are also available with an IP54 rating (FR-F746 series). The new device series FR-F746 thus provides direct protection against splashing water and can therefore be easily installed outside the control cabinet. These devices are specifically tailored to the requirements of pumps and fans. The drives are very robust and ideally suited for building automation in industry, trade and in the heating, ventilation and air condition.

FR-FSU – Subassemblies for FR-F740 inverter

For the FR-F740 Series Mitsubishi Electric now offers subassemblies for the construction of free-standing units independent of the control cabinet. The sturdy, IP20 designed Floor Standing Units are pre-assembled, making it possible to integrate a DC reactor or an additional EMC filter. The FSU is available in various sizes , there is adapted to the different performance classes of the FR-F740 frequency inverters . It is delivered as a complete installation kit including screws, cables and terminal block.

Technical details:

  • Power range 0.75 kW up to 630 kW
  • Within power range 0.75 kW – 55 kW inverters can be delivered with protection IP54 (Typ: FR-F746)!
  • Input voltage three-phase 380-480 VAC (500VAC from 75 kW)
  • Consistent concept for connection and parameterization
  • Soft PWM for whisper-quiet drive
  • Compact design
  • Programming via jog-shuttle, keypad, PC
  • Energy saving mode with display of energy saved
  • Two programmable relais
  • Variable 5-point V/f characteristic
  • PWM switching frequency from 0.7 kHz up to 14,5 kHz adjustable (from FR-F710-01800-EC: up to 6 kHz)
  • Ambience temperature  -10 °C to +50 °C (IP 54 version: 40 °C)
  • Negative and positive (PLC-) logic for control
  • Continuation of operation at instantaneous power failure
  • Motor switching on direct mains operation
  • Catch a spinning motor
  • Two serial interfaces RS 485
  • PTC resistor input
  • 15 preset speeds
  • Active current limiter
  • Skipable frequency ranges
  • Control optimum excitation current
  • Traverse function
  • 2nd set of parameters for different loads
  • Comprehensive protective functions with fault diagnosis
  • Worldwide standards  CE, UL, cUL, CSA, Gost, CCC
  • Regeneration avoidance output frequency
  • Extended PID control with sleep function and multi-engine switchover
  • 8-lingual LCD programming unit available
  • EMC by integrated EMC filters
  • Longer service life by newly developed components
  • Integrated maintenance Timer
FRA

FR-F746 (FR-F740 in protection IP54)

The FR-F746 frequency inverters from Mitsubishi Electric complement the FR-F 740 series is a dust and splash-proof device version with an IP54 rating. The FR-F746 series has been specially developed for building automation and heating, ventilation and air conditioning. The dust- and splash-proof device version in IP 54 ensures the necessary robustness and allows the installation and use of the device under “tough” ambient conditions.

What can you expect from the FR-F746 series?

Input voltage range: 3~ 380 – 500 V
Power range: 0.75 – 55 kW
  • Dust – and splash water protection according to IP 54
  • Perfect for building automation and heating, ventilation, and air conditioning for pump and fan systems in commercial and industrial surroundings
  • Ease of use and parameterization by “Digital Dial” · Extensive control and data management incl. maintenance timer
  • Maximum energy savings through “OEC-Control” (Optimum Exitation Control)
  • LonWorks, Profibus DP, CC-Link, DeviceNet and RS485 interface
  • USB-Port (optional)
  • Integr. EMC filter (EN 55011A / second environment)

Typical applications for the FR-F746 include:

  • Supply and exhaust air equipment, commercial and industrial
  • Smoke extraction fans
  • Hot air generators
  • Wall air heaters
  • Heat pumps
  • Heating and drying ovens
  • Convection heaters etc.

or even, for example, in the:

  • Food and Beverage Industry
  • Printing and paper industry
  • Chemical Industry
  • Textile industry
  • Timber industry
Power range 0.75 – 55 kW
Protection IP54
Input voltage (50/60 Hz) 3-phase 380-500 V
Output frequency 0.5-400 Hz
Preset speeds 15
Proof against short circuit, overload and no-load o
Intelligent output current control o
Automatic energy safe o
Built in braking chopper, braking resistor optional o (no braking resistor)
Communication via RS422/RS485 interface Integrated
Radio interference suppression Filter (integrated and optional)
High, adjustable PWM switching frequency for whisper-quiet motor running o (+SoftPWM)
Network connectivity Profibus DP, DeviceNet, CCLink, Modbus RTU, LonWorks
PID controller o
positive/negative logic o
Control unit with copy function o

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