Overview of the behaviour of both outputs in case of a fault
30
Fnr
Type of fault
drEd = OFF
drEd = On
drEd = Ondr
DA
AA
DA
AA
DA
AA
N
T
N
T
N
A
F
A
F
A
A
F
A
F
A
A
F
W
T/B
W
X
T
X
T
X
A
X
A
X
A
A
X
A
X
A
W
T
W
T
W
T
F
F
T/B
T
X
X
T
W
T
W
T
W
0
No fault, no anomaly occurred.
10
Fault during Power-on self test.
20
Internal malfunction in the sensor
electronics.
21
Partial malfunction in the sensor
electronics, measurement with one
channel still possible.
30
Short circuit in switching output
Out1 (diagnostic output).
40
Malfunction on the analogue
output.
41
Load for analogue output
of too high impedance.
42
Analogue signal goes to the value
3.8 mA; no linear transmission of
the measured value possible any
more. Measured temperature has
exceeded ASP value.
43
Analogue signal goes to the value
20.5 mA; no linear transmission of
the measured value possible any
more. Measured temperature has
exceeded AEP value.
A
F
W
T/B
W
A
F
W
T/B
W
A
F
A
F
A
A
F
A
F
A
T
T/B
TB
F
F
51
52
Interruption measuring element 1
(NTC).
Short circuit measuring element 1
(NTC).
53
Temperature of the probe above
the operating temperature range
(170°C).
54
Temperature of the probe below
the operating temperature range
(-32°C).
