KROHNE IFC 300 Converter EN - Manual (Page 137)

OPERATION
6
137
IFC 300
www.krohne.com 08/2010 - 4000069803 - MA IFC 300 R04 en
Measurements out of specification
F over range A The current or the corresponding measured
value is limited by a filter setting.
Check with Fct. C2.1 hardware or sticker in
terminal compartment, which output is
connected to the terminal.
If current output: extend Fct. C2.x.6 range
and Fct. C2.x.8 limitation.
If frequency output: extend values in
Fct. C2.x.5 and Fct. C2.x.7.
F over range B
F over range C
F over range A The pulse rate or the corresponding
measured value is limited by a filter setting.
Or the demanded pulse rate is too high.
F over range B
F over range C
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
F wiring A Open or short circuit of control input A/B.
Only available if used as an active NAMUR
input.
-
F wiring B
F wiring A The current at the current input is less than
0.5 mA or greater than the limit switch of
23 mA.
-
F wiring B
Messages on the display Description Actions
Status: S _ _ _ _ _ Out of specification, measurement
continues, accuracy possibly less. Maintenance required.
S uncertain measurement Device maintenance necessary; measured
values only conditionally usable.
Group message, when errors as described
below or other influences occur.
S pipe not full Only for measuring sensors with 3 or 4
electrodes. Full pipe electrode has no
contact with medium. Measured values are
still supplied, but they are too high.
Measuring pipe not filled, function
dependent on Fct. C1.3.5. Check
installation. Or electrodes completely
insulated e.g. by oil film. Clean!
S empty pipe 1 or 2 measuring electrodes are not in
contact with the medium; measured value is
set to zero. Measurement continues.
Filling level of EMF less than 50% or
electrodes completely insulated. If "0" to be
indicated when pipe is empty, activate in
Fct. C1.3.1 "cond.+empty pipe [F]".
The two empty pipe messages cannot appear at the same time. The difference lies in
whether the measured value is also set to zero upon the detection of an empty pipe. The
sensor electronics will use one or the other function (setting to zero or further
measurement) depending on a selection made by the user.
S linearity Measured values at both field current levels
are not equal. Measured values are still
supplied.
Very strong external magnetic fields, or
defect in sensor's magnetic circuit or in
signal processing.
S flow profile Measured value is not zero in the case of a
non-homogenous magnetic field. Measured
values are still supplied.
Unimpeded inlet and outlet runs of the
measuring sensor are too short, pipe not
full, measuring tube liner damaged.
Messages on the display Description Actions
Status: F _ _ _ _ _ Application fault, device OK, but
measured values affected. Application test or operator action
necessary.