GMC-I Messtechnik GmbH
R2500–37
Self-Tuning
Sequence
– The setpoint which is active when tuning is started remains valid and can no longer be changed.
– Activation or deactivation of setpoint 2 does not become effective.
– Selected setpoint ramps are not taken into consideration.
– If started at the operating point (actual value approximates the setpoint value), overshooting cannot be avoided.
– There are no time limitations for the sequence. Self-tuning may take quite a long time, depending upon the control system.
Abort
– Self-tuning can be aborted at any time with the
key (
automatic operating mode), or by switching off with the
key.
– If an error occurs during self-tuning, the controller no longer reads out an actuating signal. In this case, self-tuning must be aborted with the
key. Additional information regarding error messages upon request.
Self-tuning is enabled upon shipment from the factory (default setting). Starting the self-tuning function can be disabled in the configuration.
Self-tuning is used to optimize controller dynamics, i.e. the
Pb I
,
Pb II
,
tu
and
tc
parameters are set.
Preparation
– Complete configuration must be performed before self-tuning is started.
– The setpoint value is adjusted to the value which is required after self-tuning.
– Deactivate the program controller.
Start
– Self-tuning can only be started if it has been enabled (configuration:
tunE
=
EnA
).
– Briefly pressing
both keys simultaneously at the operating level triggers self-tuning. Self-tuning cannot be
started in the “actuator” or “limit transducer” mode.
–
tun1...tun9
blinks at the display at all levels during self-tuning.
– The controller is switched to the automatic operating mode after self-tuning has been successfully completed.
– In the case of 3-step controllers, cooling is activated if the upper limit value is exceeded in order to prevent overheating. Self-tuning then performs an oscillation
test around the setpoint.
Cur-
Cur-
Cur-
Start
Abort
Slow Blinking
or
Summary of Contents for R2500
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