IFM Electronic efector 600 TAD 71 Serie Notice Utilisateurs page 26

drEd
Characteristics of the redundancy switching (backup)
Ondr
Fault in the electronics:
Both sensor elements defective: Analogue signal at fault value
One sensor element defective:
the temperature of the 2
Drift threshold warning exceeded: Analogue signal
corresponds to measured temperature.
Drift threshold alarm exceeded: Analogue signal at fault
value
ddr
Delay of the drift detection
By means of this function short exceeding of the drift thresholds
can be filtered out (e.g. in case of large temperature gradients).
ddr value = time for which a drift value must be above the
warning / alarm threshold (drW, drA) in order to activate the
diagnostic output.
• Setting range: 0 ... 300 minutes,
• in steps of 0.5 minutes.
If the operating voltage is interrupted during the delay time, the
unit stores the remaining time. If the drift persists after
re-activation of the operating voltage, the delay becomes active
again until the remaining time has elapsed.
P-n
Output polarity of the diagnostic output
2 settings can be selected:
PnP = positive switching / nPn = negative switching.
Uni
Display unit
Measured value and setting values (ASP, AEP, drW, drA, COF) can
be displayed in the following units:
°C ; °F
Set the unit to be displayed before entering the setting values.
This avoids rounding errors generated internally during the con-
version of the units and enables exact setting of the values.
Units are delivered from the factory with: Uni = °C
Fnr
Fault number
Display of a fault number for detailed fault analysis
(→ Table on pages 23 / 24).
rES
Reset to factory settings
Click on the respective reset button.
2)
2)
depending on the setting of the parameter FOU2
Analogue signal at fault value
Analogue signal corresponds to
nd
measuring element (backup).
2)
2)
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