KROHNE MFC 300 EN - Manual (Page 115)

OPERATION
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MFC 300
www.krohne.com 02/2012 - 4000498602 - MA MFC 300 R03 en
Measurements out of specification
F SE Comms. Failure Communication error with sensor
electronics (SE). No measurement data
available.
Check wiring and grounding. Replace
electronics.
F Active Settings Error during the CRC check of the active
settings.
Upload backup 1 or backup 2 settings, check
and adjust if necessary.
F Factory Settings Error during the CRC check of the factory
settings.
F Backup 1 Settings Error during the CRC check of the backup 1
or 2 settings.
Save active settings in backup 1 or 2.
F Backup 2 Settings
Messages on the display Description Actions
Status: S _ _ _ _ _ Out of specification, measurement
continues, accuracy possibly less. Maintenance required.
S Out Of Specification Device maintenance necessary; measured
values only conditionally usable.
Group message, when errors as described
below or other influences occur.
S Overflow Totaliser 1 This is totaliser 1 or FB2 (with Profibus).
Totaliser has overrun and started again at
zero.
Check totaliser format.
S Overflow Totaliser 2 This is totaliser 2 or FB3 (with Profibus).
Totaliser has overrun and started again at
zero.
S Overflow Totaliser 3 This is totaliser 3 or FB4 (with Profibus). Not
available without IO2. Totaliser has overrun
and started again at zero.
S Backplane Invalid The data record on the backplane is invalid.
The CRC check has revealed a fault.
No data can be loaded from the backplane
when replacing electronics. Save the data to
the backplane again (Service).
S SE PCB Temperature Temperature on SE PCB is exceeding
maximum limit.
Check process and ambient temperature.
Check wiring. Exchange the sensor
electronics (SE).
S Startup The device is in startup mode. If the system
cannot start from start-up mode or came
into the startup mode from the
measurement function, the message "F
application error" also appears.
Check process conditions (air). Check device
settings C1.7.1...C1.7.3. Check sensor
resistances.
S Power Fail For custody transfer applications. Indicates
a failure of power supply. No measurement
is possible during power failure.
S Tube Temperature Process temperature is outside limits of
sensor. Failure of sensor may occur if
prolonged.
Check settings C1.7.4 and C1.7.5. Reduce
process temperature.
S Density Process density is over range. Check process conditions.
S Sensor Signal Error DC component of measuring sensor signal
is too high.
Check sensor resistances. Replace sensor.
S Res. Circ. Defective Pt500 sensor is defective. Temperature
measurement and compensation is
unreliable.
Check sensor resistances. Replace sensor.
S Sensor Levels Tube vibration amplitude too low. Check the process conditions (air).
Messages on the display Description Actions
Status: F _ _ _ _ _ Application fault, device OK, but
measured values affected. Application test or operator action
necessary.
.book Page 115 Monday, February 6, 2012 11:01 AM