ELECTRONICS
Würth Elektronik
developed the central
electrical unit for the
Terra Felis 3, the most
modern beet cleaner
loader in the world
iVT International Off-Highway 2020 87
interrelationships of the many consumers on the
circuit board.
The following tasks are performed by the
central electrical unit:
• Complete signal distribution
• Power/relay circuitry
• Machine function safeguards
• Complete load distribution
• Turn signal control system
• Follow-up control via multifunction
time relay
• Acoustic function signaling via a buzzer
In addition, the central electrical unit in the
vehicle serves as an interface to control units,
supplies power for lighting functions and
provides diagnostic data via D-sub connectors.
Every gram counts
The advantages of the new central electrical
unit include being more compact and clearer,
easier to install, quicker to operate,and easier
to maintain. “Of utmost importance, however, is
that it saves cables and reduces weight – and thus
saves raw materials (e.g. copper) and energy,”
says Siegfried Hort. The ground – and soil – is
the basis of all agricultural production and it
many ways it can be thought of as the customer’s
capital. This makes it all the more important to
maintain the soil structure – and soil protection
begins with weight. It is not without reason that
lightweight construction is a central aspect of
Holmer’s vehicle concepts, and it is
systematically implemented in all vehicles. This
in turn is impressively demonstrated by the
Holmer sugar beet harvesters: they are three tons
lighter than other harvesters on the market.
With over 35,000 components, every gram that
can be saved counts. The significantly lower
weight served as a strong argument in favor
of the new central electrical unit designed and
built by Würth.
The special feature of the solution developed
by the company is that the power distribution
and fuse protection as well as all possible bus
functions are compactly combined on one
printed circuit board (PCB). The central electrical
unit developed for Holmer also stands out with
its high reliability and simplified troubleshooting.
“You start to worry that you’ll be out of work