UWT NivoGuide 8100, Instruction Manual

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NivoGuide® 8100 • Two-wire 4 … 20 mA/HART
7 Diagnostics and servicing
58878-EN-190215
Code
Text message Cause Rectification DevSpec
State in CMD 48
M500
Error in the deliv-
ery status
•
The data could not be restored
during the reset to delivery status
•
Repeat reset
•
Load XML file with sensor data
into the sensor
Bit 0 of
Byte 14 … 24
M501
Error in the
non-active line-
arisation table
•
Index markers are not continu-
ously rising, for example illogical
value pairs
•
Check linearisation table
•
Delete table/Create new
Bit 1 of
Byte 14 … 24
M504
Error at a device
interface
•
Hardware defect
•
Exchanging the electronics
•
Send instrument for repair
Bit 4 of
Byte 14 … 24
M505
no measured val-
ue available
•
Sensor does not detect an echo
during operation
•
Check and correct mounting and/
or parameter adjustment
Bit 5 of
Byte 14 … 24
•
Process component or probe
contaminated or defective
•
Clean or exchange process com-
ponent or probe
M506
Installation/Set-
up error
•
Error during setup
•
Check and correct mounting and/
or parameter adjustment
•
Check probe length
Bit 6 of
Byte 14 … 24
M507
Error in the in-
strument settings
•
Error during setup
•
Error when carrying out a reset
•
False signal suppression faulty
•
Carry out reset and repeat setup Bit 7 of
Byte 14 … 24
Tab. 8: Error codes and text messages, information on causes as well as corrective measures
7.3 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
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:
Error Cause Rectification
4 … 20 mA signal not sta-
ble
•
Fluctuations of the measured variable
•
Set damping via the display and
adjustment module depending on the
instrument
Maintenance
Reaction when malfunc-
tion occurs
Procedure for fault recti-
fication
Check the 4 … 20 mA
signal