Troubleshooting; Error Limits As Per Namur Ne 43; Diagnostic Messages - Endress+Hauser RIA15 Operating Instructions Manual

RIA15
Expert menu (EXPRT); a code must be entered
In addition to all the parameters in the Setup menu, the Expert menu also contains the parameters described in this table. If you call up the
Expert menu, you will be asked to enter the user code (UCODE, default: 0000).
Parameter Values (default in
bold)
CURV LINAR
SQRT
NAMUR NO
YES
RNGLO Numerical value
RNGHI Numerical value
OFFST Numerical value
–19 999 to 99 999
Diagnostic Short text
number
F100 Sensor error
Endress+Hauser
Displayed when
NAMUR = NO
NAMUR = NO
8

Troubleshooting

8.1

Error limits as per NAMUR NE 43

The device can be set to error limits as per NAMUR NE 43 →  20.
The device displays an error message if a value is outside these limits.
Current value
≤ 3.6 mA
3.6 mA < x ≤ 3.8 mA
20.5 mA ≤ x < 21.0 mA
> 21.0 mA
8.2

Diagnostic messages

If several errors are pending simultaneously, the device always displays the error with
the highest priority.
1 = Highest priority
Remedial action
Diagnostics for the sensor
• Check electrical wiring
• Check the sensor
• Check sensor settings
Description
Use this to select the calculation function for the process value
LINAR (scaling with SC__4 and SC_20):
Process value = (mA value - 4)/16 * (SC_20 - SC__4) + SC__4 + OFFST
SQRT (square root extraction and scaling):
Process value = Square root((mA value - 4)/16) * (SC_20 - SC__4) + SC__4 +
OFFST
Negative values when calculating the square root are set to 0.
Example for SQRT:
• mA value = 8.0
• SC__4 = 0.0
• SC_20 = 100.0
• OFFST = 0.0
Display value = 50.0
Used for determining the maximum permissible errors in accordance with standard
NAMUR NE 43 →  21
Lower range limit. An error message is displayed if the measured current falls below
this limit.
Upper range limit. An error message is displayed if the measured current exceeds
this limit.
Use this function to enter an offset value to display the measured value.
Error
Under range
Unpermitted measured value
Unpermitted measured value
Over range
Diagnostic code
F100
S901
S902
F100
Status signal Diagnostic
behavior
F Alarm
Troubleshooting
Priority
6
21