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communication
solution
has
already been tried and tested in
many applications, including those
presented in the following examples:
Motor protection - reliable
detection of operating
statuses
In upgrading their sand and gravel
machine for the Lorüns crusher
and screening plant, Keckeis
from Rankweil, Austria, used the
SmartWire-DT intelligent wiring
systemwith the PKE electronic manual
motor starter from Eaton. When used
in combination with PKE manual
motor starters, advanced drive
monitoring is realized: the ongoing
motor current can be continuously
mapped and analyzed without cost-
intensive analogue I/O technology.
Using conventional motor control with
a manual motor starter and circuit
breaker, the switching statuses of the
two components (ON) are used as a
basis for making indirect assumptions
about operation or detecting a
shutdown. For real, reliable feedback,
a hardware solution is additionally
required, with a speed sensor, load
shedding relay etc. Furthermore, the
drive is switched off without advance
warning in the event of an overload
caused by the set current value being
exceeded, and a fault is signaled
in order to protect the motor from
damage. This leads to unplanned
interruptions to operation, impacting
time and cost considerations.
It is exactly at this point that the
great benefit of the intelligent
wiring and communication system
becomes apparent: by evaluating
the ongoing operating current at the
Lorüns crusher and screening plant,
SmartWire-DT makes it possible to
differentiate between the various
operating statuses: ‘motor switched
off’, ‘idling’, ‘operation’, ‘overload’
and ‘fault’. The individual load
thresholds and time behavior can be
freely programmed and individually
configured for each drive task. In
this way, the machine operator can
identify upcoming faults promptly and
intervene in the production process
in time, before it is interrupted
unnecessarily.
Process monitoring –
remote diagnostics
Acque del Basso Livenza S.p.A in
Italy operates one of the largest
wastewater treatment plants in
Portogruaro and the entire province
of Pordenone on a continuous, fully
automatic basis. Faults with motors
or pumps in the plant are reported
to remote technicians, who must
automated potato sorting plant - Schaltanlagenbau Gormanns
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