User's Manual

69
9 Diagnosis, asset management and service
VEGAPULS 62 • 4 … 20 mA/HART - two-wire
36503-EN-161221
Code
Text message
Cause Rectication DevSpec State in CMD
48
M500
Error with the reset deliv-
ery status
•
With the reset to delivery
status, the data could not
be restored
•
Repeat reset
•
LoadXMLlewithsen-
sor data into the sensor
Bit 0 of Byte 14…24
M501
Error in the non-active lin-
earizationtable
•
Hardware error
EEPROM
•
Exchanging the electron-
ics
•
Send instrument for
repair
Bit 1 of Byte 14…24
M502
Error in the diagnosis
memory
•
Hardware error
EEPROM
•
Exchanging the electron-
ics
•
Send instrument for
repair
Bit 2 of Byte 14…24
M503
Meas. reliability too low
•
The echo/noise ratio
is too small for reliable
measurement
•
Check installation and
process conditions
•
Clean the antenna
•
Change polarisation
direction
•
Use instrument with
higher sensitivity
Bit 3 of Byte 14…24
M504
Error on an device inter-
face
•
Hardware defect
•
Check connections
•
Exchanging the electron-
ics
•
Send instrument for
repair
Bit 4 of Byte 14…24
M505
No echo available
•
Level echo can no longer
be detected
•
Clean the antenna
•
Use a more suitable
antenna/sensor
•
Remove possible false
echoes
•
Optimizesensorposition
and orientation
Bit 7 of Byte 14…24
9.4 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
Therst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 are available with a PC
with PACTware and the suitable DTM. In many cases, the reasons can
bedeterminedinthiswayandfaultsrectied.
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:
Reaction when malfunc-
tion occurs
Procedure for fault recti-
cation
Check the 4 … 20 mA
signal