Drive range expanded

Variable speed drive range for electric motors expanded with 15 larger sizes to take it from 0.7kW up to 530kW.

Mitsubishi Electric has expanded its F700 series of variable speed drives for electric motors with 15 larger sizes up to 530kW.

At the launch last year, the range ran from 0.7 to 55kW, the most popular sizes for OEM and end-user applications.

The full range now covers drives in fields as diverse as manufacturing, HVAC, utilities, wind tunnels and commercial kitchen appliances.

The FR-F700 has excitation control and torque patterns to improve drive performance and efficiency to the load.

It can automatically optimise energy usage for each load profile.

For instance some materials, such as batter, can change their viscosity when being mixed and the F700 can detect this and constantly reoptimise its settings to follow the changing conditions.

Other features include ease of commissioning, predictive maintenance monitor, high level connectivity to control systems and tripless reliability.

A flux vector option is available for applications requiring high levels of dynamic control.

Energy savings can be monitored via the front panel, which can display the power, percentage or cumulative energy saving in kW/hr or local currency.

This information, along with other performance measures, can be downloaded via the communication network to a central location.

The removable terminal block means that if a unit has to be exchanged, say during a system reconfiguration project, rewiring is not necessary.

Instead, the terminal block is removed from the old drive and inserted into the new one.

The terminal block is compatible with Mitsubishi' s previous generation inverters, the 500 series.

The on-board EMC filter ensures compliance with European EMC legislation for industrial environments.

The cooling fan uses larger than normal bearings for an operating life expectancy longer than 10 years.

This can be improved if the fan is switched off when not required.

The F700 monitors its own key components, such as capacitors and protection circuits, and flags up if or when they are coming towards the end of their operational life.

A timer highlights when specified maintenance procedures are due, reducing unplanned downtime.

An RS485 communication port is fitted as standard and connection to all the major networks and protocols is covered, including CC-Link, Devicenet, Profibus, Modbus and, for HVAC and building automation, Lonworks.

A USB interface will soon be available.

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