VEGA VEGAFLEX 81 4 … 20 mA_HART two-wire Coax probe With SIL qualification - Manual (Page 66)

66
10 Diagnostics and service
VEGAFLEX 81 • 4 … 20 mA/HART two-wire
44216-EN-130823
Code
Text mes-
sage
Cause Rectification
M501
Error in the
non-active
linearization
table
– Hardware error EEPROM – Exchanging the electronics
– Send instrument for repair
M502
Error in the
event memory
– Hardware error EEPROM – Exchanging the electronics
– Send instrument for repair
M503
Reliability too
low
– Measurement certainty is
too low for a reliable meas-
urement
– Process component or
probe contaminated or
defective
– Check installation and
process conditions
– Clean or exchange process
component or probe
M504
Error on an
device inter-
face
– Hardware defect – Exchanging the electronics
– Send instrument for repair
M505
no measured
value avail-
able
– Sensor does not detect an
echo during operation
– Check and correct instal-
lation and/or parameter
adjustment
– Process component or
probe contaminated or
defective
– Clean or exchange process
component or probe
M506
Installation/
Setup error
– Error during setup – Check and correct instal-
lation and/or parameter
adjustment
– Check probe length
M507
Error in the
instrument
settings
– Error during setup
– Error when carrying out a
reset
– False signal suppression
faulty
– Carry out reset and repeat
setup
10.4 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, for example via the display and
adjustment module
•
Checking the output signal
•
Treatment of measurement errors
Further comprehensive diagnostics options offer a PC with the soft-
ware PACTware and the suitable DTM. In many cases, the reasons
can be determined in this way and faults can be rectified.
Reaction when malfunc-
tions occur
Procedure for fault recti-
fication