Namur Fault Conditions - TESTO 6381 Instruction Manual

Perform the
alarm via the control keys on the transmitter):
• The message/alarm is no longer shown on the display and the
optical alarm goes out, where applicable. If multiple
messages/alarms are active at the same time, all are reset
simultaneously.
• If at least one message is assigned to the collective alarm, the
collective alarm is reset. If the collective alarm is set on a relay,
the relay is also reset, meaning switched to its neutral position.
4.5.5.

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.
Status Display
message in value in
the display display
No probe None
signal
Wrong probe None
Values < 0 uuuuu
%RH
Condensation ooooo
% RH short- -----
circuit
% RH sensor -----
broken
T short-circuit -----
T sensor -----
broken
T process low uuuuu
T process ooooo
high
Probe None
disconnected
Confirm message
Class Analog output
0 to
20 mA
Error 21 mA
Error 21 mA
Underrange 0 mA
Overrange 20.5 mA 20.5 mA 1.1 V 5.5 V 11 V
Error 21 mA
Error 21 mA
Error 21 mA
Error 21 mA
Underrange 0 mA
Overrange 20.5 mA 20.5 mA 1.1 V 5.5 V 11 V
Error 21 mA
function (acknowledgement of the
4 to 20 1 V
mA
21 mA 1.1 V 5.5 V 11 V
21 mA 1.1 V 5.5 V 11 V
3.8 mA 0 V
21 mA 1.1 V 5.5 V 11 V
21 mA 1.1 V 5.5 V 11 V
21 mA 1.1 V 5.5 V 11 V
21 mA 1.1 V 5.5 V 11 V
3.8 mA 0 V
3.8 mA 1.1 V 5.5 V 11 V
4 Transmitter
5 V 10 V
0 V 0 V
0 V 0 V
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