Diagnostic Messages - ABB Aztec AWT440 Commissioning Instructions

Diagnostic messages

The transmitter is programmed to display diagnostic messages
to provide information on servicing requirements and any other
conditions that develop during operation.
All diagnostic messages displayed on the transmitter are added
to the transmitter's Audit Log.
The following tables show icon types, diagnostic messages and
possible causes / suggested remedial action.
IMPORTANT (NOTE)
– The diagnostic icons in Table 3 conform to
NAMUR 107.
– For sensor-specific diagnostics messages, refer to
the sensor manual.
Icon Diagnostic message
ADC Failure
(S1, S2, S3, S4)
Excessive Power
Int Comms Error
NV Error Comm Bd
NV Error Main Bd
NV Error Proc Bd
NV Error
(S1, S2, S3, S4)
Table 4 Diagnostic messages (1 of 2)
CI/AWT440–EN Rev. A
Possible cause and suggested action
Sensor failure (temporary or permanent failure of analog to digital converter for sensor 1, 2, 3, 4).
Cycle power to the transmitter.
If problem persists, replace electronics inside sensor.
If problem still persists contact local service organization.
The sensor is drawing more current than available.
The power being drawn from the transmitter exceeds the maximum permitted level.
Check the wiring to all sensors connected for possible wiring problems.
Check any digital outputs powered from the +24 V out terminal.
Communication to sensor failure.
Communication to one or all the sensors has failed during cyclic reads.
Check wiring between transmitter and sensors.
NV error – comms. board (CRC Comms.).
Failure of non-volatile memory on communications board or permanent corruption of its data.
Cycle power to the transmitter.
If problem persists, check all configuration parameters and correct any errors.
If problem still persists, contact local service organization.
NV error – main board (CRC Comms.).
Failure of non-volatile memory on main board or permanent corruption of its data.
Cycle power to the transmitter.
If problem persists, check all configuration parameters and correct any errors.
If problem still persists, contact local service organization.
NV error – processor board (CRC Comms.).
Failure of non-volatile memory on processor/display board or permanent corruption of its data.
Cycle power to the transmitter.
If problem persists, check all configuration parameters and correct any errors.
If problem still persists, contact local service organization
Failure of sensor (1, 2, 3, 4) non-volatile memory or permanent corruption of its data.
Cycle power to the transmitter.
If problem persists, check all configuration parameters for all sensors and correct any errors.
If problem still persists, contact local service organization.
Diagnostic Icon NAMUR Status
Failure
Check function
Out of specification
Maintenance required
Table 3 NAMUR diagnostic icons
15