testo 6651 Ethernet
- 1.5 Status, warning and error messages
81
1 If multiple messages/alarms are activated at the same time, only the last
message/alarm is shown. If this is cancelled, the other messages that are
still active are no longer displayed.
2 The message can be assigned the collective alarm function, which means
that the collective alarm is activated as soon as at least one of the
messages assigned to it is activated. The collective alarm can be assigned
to each of the 4 optional relays. The collective alarm is then always the
same, as it can only be defined once.
Execute
Confirm message
function (via control keys at transmitter):
The message / alarm is no longer shown on the display. 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.
1.5.5 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.
Analog output
Display message
Class
0-20mA 4-20mA
1V
5V
10V
No probe signal
Error
21mA 21mA
1.2V
5.5V
11V
Wrong probe
Error
21mA 21mA
1.2V
5.5V
11V
Watchdog error
Error
21mA 21mA
1.2V
5.5V
11V
Values < 0 %RH
Underrange
0mA
3.8mA
0V
0V
0V
Condensation Overrange
20.5mA 20.5mA
1.2V 5.5V 11V
%RH short-circuit
Error
21mA 21mA
1.2V
5.5V
11V
%RH sensor broken
Error
21mA 21mA
1.2V
5.5V
11V
T short-circuit
Error
21mA 21mA
1.2V
5.5V
11V
T sensor broken
Error
21mA 21mA
1.2V
5.5V
11V
Probe disconnected
Error
21mA 21mA
1.2V
5.5V
11V
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