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MAINTENANCE AND ERROR CORRECTION ON THE PROCESS CONTROLLER
Error messages on execution of the function
P.Q'LIN
Display Causes of error Remedy
Q.ERR 1
No compressed air connected Connect compressed air
No change in process value Check process, switch on pump or open
shut-off valve if necessary
Q.ERR 2
Current fixed point of the valve stroke
was not reached because
•
Pressure supply failre
•
Check pressure supply
during
P.Q’LIN
•
No
AUTOTUNE
was executed
•
execute
AUTOTUNE
Display Cause of error Remedy
L.ERR 1
No admission pressure at the Switch on compressor before start of
controller unit (> 50 mbar). leakage measurement.
L.ERR 2
Control does not fully close. Execute AUTOTUNE.
L.ERR 3
No leakage detectable: The leakage characteristic must be
the difference between admission deactivated since the precision of air
pressure and conveying pressure is flow control cannot be raised.
so low, even at slight valve opening,
that no air leak can be measured.
Whilst the valve is open the delivery Make sure that the conveying pipe is
pressure is not increased, which closed and the blocking air is open.
means that no restart points for the
characteristic can be recorded.
Error message on execution of the function LEAK MEAS
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