Service; Mag 8000 & Mag 8000 Ct Service Guidelines; Faults Codes - Siemens SITRANS F M MAG 8000 Operating Manual

MAG 8000 & MAG 8000 CT
7.1 MAG 8000 & MAG
8000 CT service
guidelines

7.1.1 Faults codes

40

7. Service

The MAG 8000 & MAG 8000 CT battery operated water meter is based on a very reliable
measurement technology and the advanced alarm monitoring and diagnostics provides valuable
information concerning the meter performance, faults, and service conditions.
Optimal meter performance requires proper meter selection, proper installation, and proper
commissioning for the particular application. This service guideline section indicates how to
detect and solve the most common problems. Meter and application problems are indicated by
the alarm program via the main fault and warning symbol on the display and the comprehensive
data logging and monitoring available via the communication interface.
Alarm monitoring includes individual registration of each alarm, how many hours the alarm has
been active, when the alarm first appeared, and when it disappeared last. The alarm log can be
reset with its own date and time registration. A common fault hour counter includes all active
alarms in one counter. Additionally, active alarms are logged in the data logger to monitor when
the alarms have been activated.
Fatal faults 1 through 4 are the most important to resolve as they influence the operation of the
meter. Fatal faults will disappear as soon the alarm condition is corrected.
Faults Alarm description
codes
Faults
1 Insulation
(Advanced version
only)
2 Coil current
3 Preamplifier overload
4 Data base checksum
SFIDK.PS.026.D9.02
Alarm reasons
Measurement is disabled
"Cross talk" between the coil circuit and the signal circuit, or
strong electrical disturbances from outside influencing the flow
signal. The alarm is active until a new test period detects no
failures. A re-activation of the insulation test will also reset the
alarm and start a new insulation test.
During the 4 minute insulation test, the measurement is disabled.
The function is re-activated via FT800.
-> Check cable and wiring installation and disturbing elements in the
surrounding.
Coil circuit is interrupted. The alarm is active until the fault condition
is corrected.
-> Check cable and wiring installation.
The flow input signal is outside of the expected range and the input
amplifier circuit can not provide a stable measurement. The alarm
is active until the fault condition is corrected.
-> Check cable and wiring installation.
All data is checked after operation (e.g., new flow calculation,
writing to the EEprom, etc.) with a checksum control. If the
checksum result fails, data will not be considered as valid and
repair data must be made. The alarm is active until the fault
condition is corrected.
-> Reset checksum repair alarm via FT560 and check the data.
If data is wrong or checksum error reoccurs, replace the PCB
board.