User guide

47
Error messages
Typ 8750
Error messages while the X.TUNE function is running
Display Cause Remedial action
X.TUNE
ERROR 1
No compressed air
connected.
Connect com-
pressed air.
X.TUNE
ERROR 2
Compressed air failure while
X.TUNE is running
Check com-
pressed air
supply.
X.TUNE
ERROR 3
Actuator or control system
deaeration side leaking
Not possible,
device defective.
X.TUNE
ERROR 4
Control system aeration side
leaking.
Not possible,
device defective.
X.TUNE
ERROR 6
The end positions for
POS-MIN and POS-MAX are
too close together.
Check com-
pressed air
supply.
X.TUNE
ERROR 7
Incorrect assignment
POS-MIN and POS-MAX.
To determine
POS-MIN and
POS-MAX, move
the actuator in
the direction
indicated on the
display.
Tab. 32: Error messages during X.TUNE
Error messages while the P.Q‘LIN / P.TUNE function is running
Display Cause Remedial action
P.Q LIN
ERROR 1
No compressed air connected.
No change to process
variable.
Connect compressed
air.
Check process and,
if required, switch on
pump or open the
shut-off valve.
Check process
sensor.
P.Q LIN
ERROR 2
Current node of the valve
stroke was not reached, as
• compressed air supply failed
during P.Q’LIN.
• X.TUNE was not executed.
Check compressed
air supply.
Execute X.TUNE.
Tab. 33: Error messages during P.Q‘LIN / P.TUNE
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