Vega VEGAPULS 21 - Failure status codes and rectification

35
11 Diagnostics and servicing
VEGAPULS 21 • Two-wire 4 … 20 mA/HART
58351-EN-191014
41 2 3
Fig. 26: Pictographs of the status messages
1 Failure - red
2 Outofspecication-yellow
3 Function check - orange
4 Maintenance - blue
Failure: Due to a malfunction in the instrument, a fault message is
output.
This status message is always active. It cannot be deactivated by the
user.
Function check: The instrument is being worked on, the measured
value is temporarily invalid (for example during simulation).
This status message is inactive by default.
Outofspecication: The measured value is unreliable because an
instrumentspecicationwasexceeded(e.g.electronicstemperature).
This status message is inactive by default.
Maintenance:
Duetoexternalinuences,theinstrumentfunction
islimited.Themeasurementisaected,butthemeasuredvalueis
still valid. Plan in maintenance for the instrument because a failure is
expected in the near future (e.g. due to buildup).
This status message is inactive by default.
Code
Text message
Cause Rectication DevSpec
State in CMD 48
F013
no measured value
available
Sensor does not detect an echo
during operation
Antenna system dirty or defective
Check or correct installation and/
or parameter settings
Clean or exchange process com-
ponent or antenna
Bit 0 of Byte 0 … 5
F017
Adjustment span
too small
Adjustmentnotwithinspeci-
cation
Change adjustment according
tothelimitvalues(dierencebe-
tweenmin.andmax.≥10mm)
Bit 1 of Byte 0 … 5
F025
Error in the lineari-
zation table
Index markers are not continu-
ously rising, for example illogical
value pairs
Check linearisation table
Delete table/Create new
Bit 2 of Byte 0 … 5
F036
No operable soft-
ware
Failed or interrupted software up-
date
Repeat software update
Check electronics version
Exchanging the electronics
Send instrument for repair
Bit 3 of Byte 0 … 5
F040
Error in the elec-
tronics
Hardware defect Exchanging the electronics
Send instrument for repair
Bit 4 of Byte 0 … 5
Failure