Mitsubishi FR-E700 inverters simplify planned maintenance

Frequency inverter drives from Mitsubishi Electric UK are famous for their reliability and longevity. The FR-E700 SC is designed for a service life of over 10 years due to a range of improvements.  Advanced self diagnostics built into the drives automatically trigger alarms when performance drops.

Amongst other things, this is made possible by high-performance heat-resistant capacitors, cooling fans with sealed bearings and special lubricating greases. The flows of cooling air only come into contact with the heat sinks, not with the electronic components, ensuring that no dust or dirt can collect on the components.

The circuit boards are very well protected against aggressive environments with single or double coatings of varnish – another feature that ensures a longer service life. FR-E700 SC units can now be installed directly next to one another. Heat dissipation has been optimised by designing the heat sinks so that they can now be installed outside the switchgear cabinet.

Faster servicing

The fans are designed as compact units that can be replaced in less than 10 seconds for cleaning or in the event of failure. Even replacing the entire inverter is a quick and simple operation – there is no wiring work at all because the terminal block is removable.

Self-diagnostics for reliable operation

These inverter drives actively monitor themselves to make sure they are working properly. For example, if the fan performance drops to 40  or lower a pre-alarm is triggered automatically. An internal measurement program monitors the ageing of the main circuit capacitors and an operating hours counter enables the operator to plan the best time for servicing well in advance. Protection and overload functions like the phase failure monitoring system for both the input and output circuits ensure trouble-free operation.

Mitsubishi’s FR-E700 is available from stock at discounted prices here