7 ND90 71 en
35
7.4
Warnings
POSITION CALIBRATION FAILED
Travel calibration failed. Check the
configuration parameters and
controller mounting. Check that
the controller shaft is correctly
aligned.
POSITION CHANGE TOO SMALL
Given samples in Linearization are
closer than 5 % to each other, i.e.
there's not enough change
between two consequent samples.
LINEARIZATION FAILED
3P/9P linearisation failed.
FACTORY SETTINGS RESTORE FAIL
Factory settings restoring failed.
TOO SMALL VALVE MOVEMENT
Position sensor range failed during
calibration. Valve controller shaft
failed to rotate minimum 45
degrees. Check the configuration
parameters and controller
mounting. Check that the
controller shaft is correctly aligned.
POSITIONER SHAFT MOVEMENT
OUT OF RANGE
Pointer out of mark on housing, see
Figure 6.
CALIBRATION TIMEOUT
Calibration timeout occurred.
Check configuration and
installation.
CALIBRATION START FAILED
The calibration starting conditions
are not met. Check the supply
pressure.
TOO SMALL SPOOL VALVE
MOVEMENT
Spool sensor range failed during
position calibration. Check the
configuration parameters. Check
the prestage and spool valve unit.
POOR VALVE PACKAGE
CONTROLLABILITY
Position calibration takes too long
time due to weak controllability.
CHECK ASSEMBLY RELATED
PARAMETERS
Check assembly and assembly
related parameters and start
calibration again.
CALIBRATION FAIL - SUPPLY
PRESSURE OUT OF RANGE
Supply pressure out of range
during position calibration.
CALIBRATION FAIL - SENSOR
FAILURE
Sensor failure (valve position/spool
position) is detected during
position calibration.
CALIBRATION FAIL - POSITION OUT
OF RANGE
Valve position out of range is
detected during position
calibration.
Display message
Description
TOTAL OPERATION TIME WARNING
Operating time exceeded limit.
VALVE FULL STROKES WARNING
Valve stroke counter limit reached.
VALVE REVERSALS WARNING
Valve reversals counter limit
reached.
ACTUATOR FULL STROKES
WARNING
Actuator stroke counter limit
reached.
ACTUATOR REVERSALS WARNING
Actuator reversals counter limit
reached.
SPOOL FULL STROKES WARNING
Spool stroke counter limit reached.
SPOOL REVERSALS WARNING
Spool reversals counter limit
reached.
STEADY STATE DEVIATION
WARNING
Warning that steady state
deviation has increased.
DYNAMIC STATE DEVIATION
WARNING
Warning that dynamic state
deviation has increased (ND9000
only).
STICTION LOW WARNING
Warning that stiction has exceeded
the low limit (ND9000 only).
STICTION HIGH WARNING
Warning that stiction has exceeded
the high limit (ND9000 only).
LOAD FOR OPENING TOO LOW
Warning that load for opening has
exceeded the low limit (ND9000
only).
LOAD FOR OPENING TOO HIGH
Warning that load for opening has
exceeded the high limit (ND9000
only).
SUPPLY PRESSURE OUT OF LIMITS
Supply pressure has exceeded the
specified operating conditions.
TEMPERATURE OUT OF LIMITS
Temperature has exceeded the
specified operating conditions.
HUNTING DETECTION WARNING
Valve hunting detected. Change
performance level to less
aggressive to stabilize valve. Check
that the spool valve capacity is
suitable for the actuator.
REDUCED PERFORMANCE
ACTIVATED
Valve controller performance is
reduced due to defective spool
valve sensor or defective pressure
sensor.
TOO LOW SUPPLY PRESS FOR 1-
ACT ACTUATOR
Too low supply pressure level for 1-
acting actuator.
VALVE REVERSALS TREND
WARNING
Warning that valve reversals per
day has exceeded the limit.
SETPOINT REVERSALS TREND
WARNING
Warning that setpoint reversals per
day has exceeded the limit.
VALVE TRAVEL TREND WARNING
Warning that valve travel per day
has exceeded the limit.
VALVE REVERSALS WH STABLE SETP
WARNING
Warning that valve reversals while
setpoint is stable, per day, has
exceeded the limit