Diagnosis, Fault Messages; Status Messages According To Ne 107 - Siemens SITRANS L Series Operating Instructions Manual

Diagnostics and troubleshooting
9.3 Diagnosis, fault messages
•
Fault rectification
The first measures are:
•
•
•
A smart device (smartphone/tablet) with the adjustment app or a PC/notebook
with the PDM and the suitable EDD offer you further comprehensive diagnostic
possibilities. In many cases, the causes can be determined in this way and the faults
eliminated.
Reaction after fault rectification
Depending on the reason for the fault and the measures taken, the steps described
in chapter " Setup" must be carried out again or must be checked for plausibility
and completeness.
9.3

Diagnosis, fault messages

4 ... 20 mA signal
Connect a multimeter in the suitable measuring range according to the wiring
plan. The following table describes possible errors in the current signal and helps to
eliminate them:
Error
4 ... 20 mA signal not
stable
4 ... 20 mA signal missing
Current signal greater
than 22 mA, less than
3.6 mA
9.4 Status messages according to NE 107
The transmitter features self-monitoring and diagnostics according to NE 107 and
VDI/VDE 2650. In addition to the status messages in the following tables there are
28
Signal processing
Evaluation of fault messages
Checking the output signal
Treatment of measurement errors
Cause
Fluctuating measured value
Electrical connection faulty
Voltage supply missing
Operating voltage too low, load
resistance too high
Transmitter electronics defective
Rectification
Set damping
Check connection, correct, if
necessary
Check cables for breaks; repair if
necessary
Check, adapt if necessary
Replace device or send in for repair
depending on device version
Operating Instructions, 08/2020, A5E49829004
SITRANS LR100