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15.1.9
Calibrating temperature
Calibrating the controller diaLog DACb
8.
Apply the result of the calibration by pressing
ð The controller shows the calibration menu again and
operates with the results of the calibration.
Incorrect calibration
An error message appears if the result of
the calibration lies outside the specified
tolerance limits. In this case, the current
calibration is not carried over.
Check the prerequisites for calibration
and eliminate the error. Then repeat cali‐
bration.
Measuring and control behaviour of the controller
during calibration
During calibration the actuating outputs are deacti‐
vated. Exception: a basic load or a manual control
variable has been set. This remains active. The
measured value output [standard signal output mA]
is frozen, corresponding to its settings in the mA
output menu.
When calibration/testing has been completed suc‐
cessfully, all of the error checks relating to the
measured value are restarted. The controller saves
all the determined data for zero point and slope
upon a successful calibration.
You may need a manual measuring instrument for the temperature
measured variable. This manual instrument should measure and
display sufficiently accurately to guarantee successful calibration.
1.
Press
in the continuous display.
2.
Then press
3.
Follow the instructions in the controller display and perform
calibration
4.
Then press
5.
Then press
to adjust the value or press
calibration
6.
Import the result of the calibration into the controller memory
by pressing
ð The controller shows the continuous display again and
operates with the results of the calibration.
Incorrect calibration
An error message appears if the result of
the calibration lies outside the specified
tolerance limits. In this case the current
calibration is not carried over.
Check the prerequisites for calibration
and eliminate the error. Then repeat cali‐
bration.
.
to continue with
111
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