Namur Fault Conditions - TESTO 6681 Profibus Instruction Manual

testo 6681 Profibus
90

1.5.6 Namur fault conditions

If the faults named in the following table occur, the analog outputs output
special values that enable a general fault warning in the higher-level control
system. The values correspond to the "Namur" industry standard.
Display message
No probe signal
Wrong probe
Watchdog error
Values < 0 %RH
Condensation
%RH short-circuit
%RH sensor broken
T short-circuit
T sensor broken
Probe disconnected
- 1.5 Status, warning and error messages
Class 0 -
20 mA
Error 21 mA
Error 21 mA
Error 21 mA
Underrange 0 mA
Overrange 20.5 mA 20.5 mA 1.2 V
Error 21 mA
Error 21 mA
Error 21 mA
Error 21 mA
Error 21 mA
Analog output
4 - 1 V
20 mA
21 mA 1.2 V
21 mA 1.2 V
21 mA 1.2 V
3.8 mA 0 V
21 mA 1.2 V
21 mA 1.2 V
21 mA 1.2 V
21 mA 1.2 V
21 mA 1.2 V
5 V 10 V
5.5 V 11 V
5.5 V 11 V
5.5 V 11 V
0 V 0 V
5.5 V 11 V
5.5 V 11 V
5.5 V 11 V
5.5 V 11 V
5.5 V 11 V
5.5 V 11 V