163
Type 8692, 8693
english
Servicing and Troubleshoot-
ing the Process Controller
2.1.2 Error Messages while the X.TUNE Function is Running
Display Causes of error Remedial action
X.TUNE locked
The X.TUNE function is blocked Input access code
X.TUNE
ERROR 1
No compressed air connected Connect compressed air
X.TUNE
ERROR 2
Compressed air failed during Autotune Check compressed 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 compressed 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.
2.1.3 Error Messages while the P.Q'LIN Function is Running
Display Causes of error Remedial action
P.Q LIN
ERROR 1
No supply pressure connected
No change to process variable
Connect supply pressure
Check process and, if required, switch on pump or
open the shut-off valve
P.Q LIN
ERROR 2
Current node of the valve stroke was not
reached, as
supply pressure failed during • P.Q’LIN
Autotune was not run•
Check supply pressure
Run Autotune
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