Vega VEGAPULS 21 Operating Instructions Manual page 37

Code Cause
Text message
S601 Danger of vessel overfilling
Overfilling
S603 Terminal voltage too small
Impermissible oper-
ating voltage
Maintenance
Code Cause
Text message
M500 The data could not be restored
during the reset to delivery status
Error during the re-
set "delivery status"
M501 Hardware error EEPROM
Error in the non-
active linearisation
table
M502 Hardware error EEPROM
Error in the event
memory
M503 The echo/noise ratio is too small
for reliable measurement
Measurement reli-
ability too low Antenna dirty or defective
M504 Hardware defect
Error at a device in-
terface
M505 Sensor does not detect an echo
during operation
No echo available
Antenna dirty or defective
M506 Error during setup
Installation/Setup
error
M507 Error during setup
Error in the instru- Error when carrying out a reset
ment settings
False signal suppression faulty
VEGAPULS 21 • Two-wire 4 ... 20 mA/HART
Rectification
Make sure that there is no fur-
ther filling
Check level in the vessel
Check terminal voltage, increase
operating voltage
Rectification
Repeat reset
Load XML file with sensor data in-
to the sensor
Exchanging the electronics
Send instrument for repair
Exchanging the electronics
Send instrument for repair
Check installation and process
conditions
Change polarisation direction
Use instrument with higher sen-
sitivity
Clean the antenna
Check connections
Exchanging the electronics
Send instrument for repair
Clean the antenna
Use a more suitable antenna/
sensor
Remove possible false echoes
Optimize sensor position and ori-
entation
Check or correct installation and/
or parameter settings
Carry out reset and repeat setup
11 Diagnostics and servicing
DevSpec
State in CMD 48
Byte 23, Bit 5 of
Byte 14 ... 24
Byte 23, Bit 6 of
Byte 14 ... 24
DevSpec
State in CMD 48
Bit 0 of
Byte 14 ... 24
Bit 1 of
Byte 14 ... 24
Bit 2 of
Byte 14 ... 24
Bit 3 of
Byte 14 ... 24
Bit 4 of
Byte 14 ... 24
Bit 5 of
Byte 14 ... 24
Bit 6 of
Byte 14 ... 24
Bit 7 of
Byte 14 ... 24
37