Siemens SITRANS F TRANSMAG 2, Operating Instructions Manual, Page: 81 / 126

Error Diagnosis Remedy
Measuring deviations, meas‐
uring errors Inlet and outlet lines insufficient Change installation (see Determining a location
(Page 19))
Highly turbulent flow profile Change inlet line, use flow rectifier, reduce diam‐
eter of tube
For mass measurement: medium density
set incorrectly Correct density according to current medium
(menu 3.1.4)
Hydraulic calibration values faulty Check hydraulic calibration values CFH and ZPH.
According to the sensor rating plate and correct if
necessary (menus 6.7.2 and 6.7.3).
Electric calibration faulty Run self-test (menu 2.4.1);
Check device status (menu 2.1): if "Calibration
failure measuring module" is displayed, send in
the complete electronics for repair
Application-dependent calibration values
faulty Reset zero point correction (menu 6.6.1) to 0 and/
or reset calibration factor (menu 6.7.1) to 1.0.
Alternatively: Make zero correction (menu 6.6.2)
and manual adaptation of the calibration factor
(menu 6.7.1)
Measured value too low at
dosing Set attenuation too high Reduce filter time constant (menu 3.1.7.1)
Fault blanking activated Deactivate noise suppression (menu 3.1.7.3)
Magnetic field frequency too low Device may not be suitable for this application
Magnetic field frequency too low Change excitation to Bipolar (menu 6.7.4)
Measured value too low in
pulsed flow Temporary exceeding of internal working
range Increase URV (menu 3.1.2)
Unfavorable hydraulic conditions Install sensor on the suction side of the corre‐
sponding pump or in front of the feeding valve
Unfavorable hydraulic conditions Change excitation to Bipolar (menu 6.7.4)
Output current does not cor‐
respond to the current flow
and remains at a constant
value There is a fault, failure signal 3.6, 22 or 24
mA is output (depending on the setting un‐
der menu 4.1.2) Determine source of fault under device status
(menu 2.1)
Load too high Reduce total load including the resistance to <
600 Ω
Current output or power supply defective Replace complete electronics
Communication via HART
not possible Minimum load of 230 Ω not available Increase load to at least 230 Ω and connect HART
Modem/Communicator parallel to this load
Communication via PROFI‐
BUS not possible Device address set incorrectly (assigned
more than once on the same bus or not
configured in the master) Correct address under menu 4.1.1 or request and
correct by acyclic communication
Current load on bus too high for connected
feeding device Try disconnecting other devices from the bus
Adapt the feeding device if necessary
Baud rate between master and coupler/link
not correct Adapt baud rate to coupler/link
More than two bus terminations exist (incl.
coupler and link) Reduce to two bus terminations
PROFIBUS interface defective Check device status (menu 2.1): if "COM module
failure" is signaled, replace the complete electron‐
ics
Troubleshooting
10.2 Application Problems
TRANSMAG 2 with MAG 911/E
Operating Instructions, 03/2021, A5E00102775-AC
81