KROHNE ifc 300 Handbook page 49

Display messages
Status: A _ _ _ _
(_ _ _ _ = see texts below
Application error
Empty pipe
Flow rate too high
(not when pipe empty)
Field frequency too high
(not when coil has open
circuit)
DC Offset
(not when pipe empty)
Open circuit A
Open circuit B
Open circuit C
Over range A
Over range B
Over range C
Over range D
Active settings
Factory settings
Backup 1 / 2 settings
Status: U _ _ _ _
(_ _ _ _ see texts below)
uncertain measurement
Pipe not full
(applies only to primary heads
with 3 or 4 electrodes, Option)
03 / 2005
Description
= application-sensitive fault, device OK,
measured values affected
Application fault, device OK.
Use measured values with caution
1 or 2 measuring electrodes are not in contact
with the medium: flow indication = 0.
Monitoring / message only if
"cond.+empty pipe [A]"
under Fct. C 1.3.01 Empty Pipe is activated
Overrange,
Filter setting limits the measured values
Field current has not settled,
measured flow value inaccurate
ADC overdriven by DC input level,
flow measured value = 0
Load of current output A too high
Load of current output B too high
Load of current output C too high
Measured value at terminals A limited by filter
setting
Measured value at terminals B limited by filter
setting
Measured value at terminals C limited by filter
setting
Measured value at terminals D limited by filter
setting
Fault detected during CRC check of active
settings
Fault detected during CRC check of factory
settings
Fault detected during CRC check
of Backup 1 / 2 settings
= uncertain flow measurement, measure-
ment continues, accuracy possibly less
uncertain flow measurement,
measurement continues with less accuracy
Full-pipe electrode (Option) is not in contact with
the medium.
Monitoring / message only plausible when the lowest
appropriate electrical conductivity is set under
Fct. C 1.3.03 Full Pipe = "on" and under
Fct. C 1.3.04 Limit Full Pipe
IFC 300
Possible causes, remedial
action
Application test or operator
action necessary !
Group message, when errors as
below or other application errors
occur.
Pipe not filled, function
dependent on Fct. C 1.3.01.
Check installation.
Or electrodes completely insulated
by e.g. oil film. Clean!
Limitation Fct. C 1.2.01:
Increase values
If Fct. C 1.1.14 Settling Time is set
to "Manual", increase value in Fct.
C 1.1.15.
If "Standard" is set, set field
frequency in Fct. C 1.1.13 acc. to
sensor nameplate.
For IFC 300 F and W: check
connection of signal cable
Current not correct,
mA output cable has open circuit
or load too high.
Check cable, reduce load (should
be < 1000 Ohm)!
Check with Fct. C 2.1 Hardware or
sticker in terminal compartment,
which output is connected to the
terminal.
If current output:
Extend Fct. C 2.x.06 Measuring
Range and
Fct. C 2.x.08 Limitation
If frequency output:
extend values under Fct. C 2.x.05
and Fct. C 2.x.07.
Upload Backup 1 or Backup 2
settings, check and adjust if
necessary.
Store active settings in
Backup 1 / 2.
Maintenance necessary!
Group message, when faults as
below or other influences occur.
Measuring tube not completely
filled, error dependent on fill level.
If necessary, change wiring!
Or:
Electrodes completely insulated
e.g. by oil film. Clean!
49