14
Fnr Type of fault
Remedy
42 Analogue signal at the lower limit value,
no linear transmission of the measured
value possible any more� Measured
temperature is below ASP value�
►
Set ASP value (AEP value if [OU] =
[InEG]) lower if possible, or reduce
medium temperature�
43 Analogue output at the upper limit value,
no linear transmission of the measured
value possible any more� Measured tem-
perature has exceeded AEP value�
►
Set AEP value (AEP value if [OU] =
[InEG]) higher if possible, or reduce
medium temperature�
51
Interruption measuring element 1 (NTC).
►
Replace the unit�
(Sensor backup is possible).*
52
Short circuit measuring element 1 (NTC).
►
Replace the unit�
(Sensor backup is possible).*
53 Temperature of the probe above the
operating temperature range (170 C°).
►
Reduce medium temperature�
54 Temperature of the probe below the
operating temperature range (-32 °C).
►
Increase medium temperature�
59 Both sensor elements faulty�
►
Replace the unit�
61 Interruption measuring element 2
(Pt 1000)
►
Replace the unit�
(Sensor backup is possible).*
62 Short circuit measuring element 2
(Pt 1000).
►
Replace the unit�
(Sensor backup is possible).*
71 Detected sensor drift exceeds warning
level�
First indication of drift detected�
►
Prepare replacement of the unit�
►
Check whether the parameter [drA] is
programmed correctly�
72 Detected sensor drift exceeds alarm
level�
Drift exceeds alarm threshold�
Temperature measurement with reduced
accuracy possible�
►
Replace the unit�
►
Check whether the parameter [drA] is
programmed correctly�
91 Supply voltage outside the operating
voltage range�
►
Check the supply voltage; ensure a
correct voltage supply�
92 Operating temperature of the electronics
outside the specified range�
►
Check the temperature of the upper
part of the unit�
►
Adhere to the specified temperature
range�
*[drEd] = [On] or [Ondr]�
