Rectify Faults - Siemens SITRANS LG270 Operating Instructions Manual

Code Cause
Text message
•
S603 Operating voltage below specified
range
Impermissible
operating voltage
Maintenance
Code Cause
Text message
•
M500 The data could not be restored
during the reset to delivery status
Error in the deliv-
ery status
•
M501 Index markers are not continu-
ously rising, for example illogical
Error in the
value pairs
non-active line-
arisation table
•
M504 Hardware defect
Error at a device
interface
•
M505 Sensor does not detect an echo
during operation
no measured val-
•
ue available
Process component or probe
contaminated or defective
•
M506 Error during setup
Installation/Set-
up error
•
M507 Error during setup
•
Error when carrying out a reset
Error in the in-
•
False signal suppression faulty
strument settings
Reaction when malfunc-
tion occurs
Procedure for fault recti-
fication
Treatment of measure-
ment errors
52
Rectification
•
•
The following table shows the error codes and text messages in the
status message "Maintenance" and provides information on causes
as well as corrective measures.
Rectification
•
•
•
•
•
•
•
•
•
•
•
9.4

Rectify faults

The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
The first measures are:
•
Evaluation of fault messages via the adjustment device
•
Checking the output signal
•
Treatment of measurement errors
Further comprehensive diagnostics options are available with a PC
with PACTware and the suitable DTM. In many cases, the reasons can
be determined in this way and faults rectified.
The below tables show typical examples for application-relevant
measurement errors. There are two measurement errors:
SITRANS LG270 - Operating Instructions
Check electrical connection
If necessary, increase operating
voltage
Repeat reset
Load XML file with sensor data
into the sensor
Check linearisation table
Delete table/Create new
Exchanging the electronics
Send instrument for repair
Check and correct mounting and/
or parameter adjustment
Clean or exchange process com-
ponent or probe
Check and correct mounting and/
or parameter adjustment
Check probe length
Carry out reset and repeat setup
TB
Diagnostics
Bit 26
TB
Diagnostics
Bit 15
Bit 16
Bit 19
Bit 20
Bit 20
Bit 21
Bit 22
PBD-51041071