Error messages
138 FEX300,
FEX500
OI/FEX300/FEX500-EN
9.2
Error states and alarms
9.2.1 Errors
Error no. /
Range
Text on the LCD display
Cause
Remedy
F254.038
Electronics
unit
RAM Error in Transmitter
Contact
ABB Service
Error in the transmitter electronics unit. Replace the electronics unit or contact
ABB Service.
F253.037
Electronics
unit
ROM Error in Transmitter
Contact
ABB Service
Error in the transmitter electronics unit. Replace the electronics unit or contact
ABB Service.
F252.017
Sensor
No Sensor Memory
Check wiring
Check switch SW3
Incorrectly wired terminals D1 and D2.
Short circuit or break in wires D1, D2.
Jumper SW3 is not correctly plugged
into the backplane.
Old flowmeter sensor connected
without SensorMemory.
Check the wiring for terminals D1, D2.
If an old flowmeter sensor (e.g., model
DE41F) is connected without
SensorMemory, plug the jumper into
the backplane in the "ON" position.
F251.040
Electronics
unit
Self Check Alarm
The SIL monitoring function has
detected a transmitter error.
Replace transmitter or
F250.016
Electronics
unit
Tx. memory fault detected
Contact
ABB Service
Error in the transmitter electronics unit. Replace the electronics unit or contact
ABB Service.
F248.036
Sensor
Incompatible snsTx+
snr are not the same series
Calibration mode is not compatible.
Contact ABB Service.
F246.031
Electronics
unit
Defect digital potentiometer
Transmitter Hardware fault
ABB Service
Internal digital potentiometer for
common mode rejection is defective.
Replace the electronics unit or contact
ABB Service.
F245.047
Electronics
unit
Stack NV Corrupt
Contact
ABB Service
The internal stack memory for
PROFIBUS PA / FOUNDATION
Fieldbus is defective.
Replace the electronics unit or contact
ABB Service.
F244.031
Electronics
unit
Internal supply voltage error
Contact
ABB Service
Failure of transmitter internal power
supply.
Replace the electronics unit or contact
ABB Service.
F236.024
Operation
DC to High
Lot of NV-Resets
Refer to instr. Manual
Multi-phase fluids that produce a very
high level of noise.
Stones or solids that produce a very
high level of noise.
Galvanic voltages at the measuring
electrodes.
Conductivity of fluid is not evenly
distributed (e.g., directly after injection
points).
Contact ABB Service.
F232.022
Electronics
unit
Driver Error
Uref = 0
Check wiring for
open circuit
Check fuse
Incorrect wiring (terminals M1, M2) or
wire break/short circuit.
Defective fuse in the coil circuit or
moisture in the terminal box.
Check that the wiring (terminals M1,
M2) is connected properly, check for
wire breaks and short circuits.
Check the coil circuit fuse.
Check the connection box for moisture.
F228.020
Electronics
unit
Error in
Coil circuit
Check wiring for
short circuit
Incorrect wiring (terminals M1, M2) or
wire break/short circuit.
Fuse in the coil circuit is defective.
Check that the wiring (terminals M1,
M2) is connected properly, check for
wire breaks and short circuits.
Check the coil circuit fuse.
Continued on next page.
Summary of Contents for FEX300
Page 169: ...Appendix OI FEX300 FEX500 EN FEX300 FEX500 169...
Page 170: ...Appendix 170 FEX300 FEX500 OI FEX300 FEX500 EN...
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