Setpoint gradient
KS 90-1 application
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Description
Numerous Aplikacje involve gentle
heating of material (plastic components,
films, steel, sintered and ceramic parts,
etc.) by various means, e.g. tempering or
annealing furnaces, sintering furnaces,
and calenders.Sudden temperature variations
(e.g. due to power-up after a disturbance)
or setpoint change can lead to the
loss of an entire batch of valuable
heat-treated products.
Therefore, control of the temperature
setpoint must be easily adaptable to the
changed conditions. A basic requirement
for this is an integral programmer function
in the controller, which allows free
setpoint adaptation.
Without reliable adherence to the necessary
heating requirements, there is always
a remaining risk of malfunction,
e.g. due to human error (incorrect settings),
unforeseeable disturbances such
as mains failure, heater failure, and faults
in equipment or wiring.
In these cases, the KS 90-1 programmer
is able to ensure that a setpoint ramp is
activated automatically as soon as the
control deviation exceeds a preset bandwidth.
The programmer takes over at the
actual process value, and gently brings
the temperature back to the correct setpoint.
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detailed Documentation |
Copyright © 2005 PMA Prozeß- und Maschinen-Automation GmbH