ABB FEX300 - Maintenance

Error messages
142 FEX300, FEX500 OI/FEX300/FEX500-EN
Error no. /
Range
Text on the LCD display Cause Remedy
S124.029
Operation
Electr.Impedance
too high
Coating?
Conductivity?
Empty Pipe?
This could be caused by insulating
deposits on the electrodes,
conductivity that is too low, or an
empty meter tube.
If the pipeline is empty, check whether
the empty pipe detection function is
activated.
In the "Diagnostics" menu, activate the
empty pipe detection function.
Check conductivity, check deposits on
the electrodes.
Increase the value for Elec. Imp. Max.
Alarm in the "Diagnostics - Alarm
Limits" menu.
S122.026
Operation
Short-ciruit E1
E2 with shield.
Galvanic voltages. Increase the value in the "Diagnostics -
Alarm Limits - Electr. V Max Alarm"
menu and decrease the value for
Electr. V Min Alarm.
S120.023
Operation
Electrode Noise too high
Switch on
Noise Reduction
The noise at the measuring electrodes
is above the limit value.
Check process.
S110.035
Operation
Sensor setup
Cal-Status
Set Cal-Status
to calibrated
Sensor is uncalibrated or Cal status is
not set to "calibrated".
Contact ABB Service.
S108.044
Operation
Pulse output is
cutted off
Check pulse out
configuration
Incorrect configuration. In the "Easy Set-up" menu, reduce the
"Pulses per unit" value.
9.2.4 Maintenance
Error no. /
Range
Text on the LCD display Cause Remedy
M099.027
Electronics
unit
NV Corrupt NV Memory, SensorMemory, FRAM
defective
Contact ABB Service.
M094.034
Electronics
unit
Current
out fault
Comms. to MSP
Check wiring!
20mA passive?
Check BR901!
20 mA loop open, wire break or no
power connected during operation as
passive 20 mA output, max.
permissible load exceeded or
hardware defective.
Check for incorrect wiring, wire break.
Check that the jumper to the 20 mA
active/passive switchover is connected
correctly to the backplane in the
transmitter housing.
Check whether the external power is
connected during operation as 20 mA
passive.
M090.014
Sensor
Errors
Sensor Comms
Bad EMC
environment
Check wiring
EMC environment or loose contact on
the D1 or D2 terminals, or incorrect
wiring, or short circuit, or moisture in
the terminal box.
Check for incorrect wiring (terminals
D1, D2), check terminal box.
M080.012
Operation
Display value is
<1600h at Qmax
Change eng.
Unitfor Totalizer
Display value <1,600 h for Qmax. Change the totalizer unit.