DRIVES
carried out using chain-driven scrapers
under a conveyor, which removes any
debris that sticks to the logs. If a problem
occurs — such as a log falling off the
conveyor — the chain is protected by
Emotron M20 shaft power monitors,
which stop the scrapers immediately
once chain tension is raised.
50
The debarking process is controlled by
an Emotron FDU variable speed drive,
which ensures the logs are fed at an even
speed. This is powered by four 22kW
motors jointly controlled by an FDU
1332kW variable speed drive. The ground
bark is used to fuel the plant’s timber
driers as well as for heating purposes.
So whether they are used to polish
top-class watch parts, move water around
more efficiently or begin the process of
cleaning and preparing freshly-felled
logs, motors and drives can save money
and improve processes. And with new
engineering projects around the world
requiring high levels of automation, the
future looks rosy for low-power drive and
motor manufacturers.
the EnGIneeR 1–14 SEPTEMBER 2008
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