ELECTRONICS
88
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sometime,” comments an electrician in
production at Holmer. And in truth, contact
problems at the connectors, like incorrectly
plugging relays and fuses, have now become a
thing of the past. The central electrical unit is
subjected to a 100% short-circuit and connection
test and mounted before delivery, which means
that it is directly prepared in Holmer’s production
facilities for plug-and-play installation. Fuse
failure detection, voltage visualization and fast
diagnostics via measuring sockets – all this has
made the electrical system of Holmer machines
easier for the technician to handle. The electrical
unit of the machines is no longer an issue for
the end user.
From industrial to automotive solutions
The Terra Felis series has proven its mettle in
worldwide use and set standards for gentle and
efficient beet loading for over 10 years now. In
2017, the company launched the Terra Felis 3, the
most technologically advanced beet cleaner
loader in the world. Terra Felis, the self-propelled
beet cleaner loader, is a complex machine with
hydrostatic drive. The patented VarioPick pickup
device for the beets with its variable cleaning
path, which can be controlled via the speed of the
rollers, and the other cleaning paths require drive
units. The transfer arm with sensor for fully
automatic, uniform filling of the removal vehicles
and the counterweight arm must be controlled
and operated, and the driver’s cab is also movable
and can be raised for improved visibility. In
addition, there are various convenient cab
functions and the ergonomic control system with
comprehensive monitoring of all components.
Given the multitude and complexity of the
control tasks, it comes as no surprise that the
electrical systems of previous beet cleaner loaders
were housed in two full-grown, hand-wired
industrial switch cabinets. In the new model, the
change from industrial technology with a switch
cabinet to streamlined automotive technology
not only brings significant cost advantages, but
also improved aftersales service thanks to the
worldwide availability of spare parts. Holmer is
presenting the new and improved beet cleaner
loader just in time for Agritechnica, the world’s
largest trade fair for agricultural machinery in
Hanover, Germany. The Terra Felis 3 evo also
features a central electrical unit from Würth
Elektronik ICS.
“More functionality with less weight – this
would be one of our principles in the design of
agricultural machinery,” says Hort. “And that is
exactly what Würth Elektronik ICS has supplied
us with. The cooperation was characterized by
exemplary project management, from planning
design to development, prototype delivery, tests
and adjustments, right through to series
production. That’s why we already have the next
tasks for our partner when it comes to innovative
vehicle electrical systems.” iVT
Author: Stefan Hartmann, sales manager, Würth Elektronik ICS
Before (ABOVE) and after (RIGHT)
– the new central electrical
unit is more compact, easier to
install, quicker to operate and
easier to maintain
/pivt