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NDC Reverse Engineer Schindler VF20 BR Variodyn Lift Inverters

NDC have been actively involved with a reverse engineering project covering Schindler's VF20 BR Variodyn AC Lift drives.

These drives present a difficult challenge for lift companies and repairers alike as the common problems which occur on these are serious and have, up to now, rendered the unit beyond repair. This in itself has caused issues because although the drive is a Vacon variant, it is far from a case of replacing the unit with another Vacon drive. The Schindler software is the issue with these drives and also it is extremely costly to replace them, usually in the region of £4,000. 

The solution is now available thanks to the extensive research that NDC have put in over the last few months. We can now fully repair these units even when they have sustained serious damage, thus cancelling out the need to replace the unit and pursue the difficult task of re-programming the unit.

It is now a simple case of repairing the existing drive and re-installing the unit allowing the lift in question to be quickly returned to service.

The accompanying picture shows the control panel for identification purposes and also the Skiip IGBT module indicating the kind of damage it sustains when faulty. Also in the picture is the drive PCB which also sustains serious damage during the common failures.

There are many Schindler VF20 BR Variodyn lift drives in service around the UK. Contact your nearest NDC Service Centre to discuss the attractive repair option now available via NDC.

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