Metso Switchguard SG9000H, Installation Maintenance And Operating Instructions

Page: 21 / 48

7 SG9H 70 en 21
6.3 Errors
6.4 Warnings
6.5 Notifications
7 TROUBLE SHOOTING
Mechanical/electrical defects
1. A change in the valve position setpoint will not affect the
position of the actuator

Supply pressure too low

Spool valve sticks

Incorrect configuration parameters

Actuator and/or valve jammed

Signal wires incorrectly connected, no value on dis-
play

Circuit boards are defective

Calibration has not been carried out

Device is in manual mode

Prestage is defective

Device is in fail-safe mode

Spool mounted backwards into spool valve
2. Inaccurate positioning

Spool valve dirty

Too high actuator load

Supply pressure too low

Spool or pressure sensors are defective

Actuator leakage
3. Overshooting or positioning too slow

Spool valve dirty

Supply air tube too small or supply air filter dirty

Valve sticks

Check leakages in tubes between controller and
actuator

Check leakages in mechanical stop screws

Check correctness of MAXS parameter. Change it
from "slow" to "fast" or "moderate".
4. Error during valve travel calibration

Valve controller is in
MAN
mode

Check the coupling alignment with the pointer, see
Fig. 3

The parameter setting
PFA
incorrectly selected

The actuator or valve did not move or was stuck dur-
ing calibration

Supply pressure too low

Spool valve dirty
Display message Description
CALIBRATION FAILED Calibration process has failed.
CALIBRATION START FAILED Calibration process could not be
started.
CALIBRATION TIMEOUT Calibration process has taken too
long time.
FACTORY SETTINGS CREATE FAIL Factory settings creation failed.
FACTORY SETTINGS RESTORE FAIL Factory settings restoration failed,
i.e. current parameter set could not
be loaded with factory settings.
INTERNAL BOOT RESET Software has lost the control and
internal watchdog generated reset.
POSITION SENSOR FAILURE Position sensor defect has been
detected.
POSITION SENSOR RANGE ERROR Too narrow position sensor range
was detected in position
calibration process.
PRESSURE SENSOR 1 FAILURE Pressure sensor #1 defect has been
detected.
PRESSURE SENSOR 2 FAILURE Pressure sensor #2 defect has been
detected.
PRESSURE SENSOR 3 FAILURE Pressure sensor #3 defect has been
detected.
PRESTAGE CUT ERROR Prestage coil cut has been
detected.
PRESTAGE SHORTCUT ERROR Prestage coil shortcut has been
detected.
PT COMMUNICATION ERROR Communication with position
transmitter was lost.
STATISTICS DATABASE ERROR Error occurred when writing
statistics to database.
TEMPERATURE SENSOR FAILURE Temperature sensor defect has
been detected.
Display message Description
ACTUATOR FULL STROKES
WARNING Actuator full stroke counter has
exceeded the warning limit.
CLOSE STROKE DEVIATION
WARNING Valve close stroke deviation time
trend has exceeded the warning
limit.
OPEN STROKE DEVIATION
WARNING Valve open stroke deviation time
trend has exceeded the warning
limit.
REDUCED PERFORMANCE
ACTIVATED Controller can not perform
boosting due to pressure sensor
failure. Also, position sensor failure
cause device to act like any normal
solenoid device: position can not
be controlled.
SPOOL REACTION TIME CLOSE
WARNING Spool valve reaction time close
trend has exceeded the warning
limit.
SPOOL REACTION TIME OPEN
WARNING Spool valve reaction time open
trend has exceeded the warning
limit.
SUPPLY PRESSURE OUT OF LIMITS Supply pressure is out of warning
limits.
SUPPLY PRESSURE TREND
WARNING Supply pressure trend value has
exceeded the warning limits.
TEMPERATURE OUT OF LIMITS Temperature is out of warning
limits.
TEMPERATURE TREND WARNING Temperature trend value has
exceeded the warning limits.
TOTAL OPERATION TIME WARNING Total operating time has exceeded
the warning limit.
VALVE FULL STROKES WARNING Valve full stroke count has
exceeded the warning limit.
VALVE REACTION TIME CLOSE
WARNING Valve reaction time close trend has
exceeded the warning limit.
VALVE REACTION TIME OPEN
WARNING Valve reaction time open trend has
exceeded the warning limit.
Display message Description
CALIBRATION CANCELLED Calibration process has been
cancelled.
CALIBRATION SUCCESSFUL Calibration process has ended
successfully.
EXTERNAL RESET Device has been booted, i.e.
power-up reset.
FACTORY DEFAULTS ACTIVATED Device parameters were changed
to factory settings.
REDUCED PERFORMANCE
DEACTIVATED Recovery for reduced performance
activation.