DURAG D-ISC 100 2 Series - Page 182

15 | Examples of settings
182
D-ISC 100 x xx2
○
[
Source module off-line (e.g. sensor)]
Signal source (e.g. sensor) not connected
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[
Source module not assigned (e.g. sensor)]
Signal source (e.g. sensor) not assigned
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[
Source module not available (e.g. sensor)]
Signal source (e.g. sensor) not available
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[
Device (D-ISC100) faulty]
Fault in the Universal control unit
15.10.3 Example: Setting the overruns / underruns
Fig.15.42: Analogue output
specific parameter
D‑ISC100 menu path:
Standard display (menu1) Channelsetup (menu4) Chan-
nelsetup (menu4.1)
Modules (M) (menu4.3.1) e.g. Ana-
logue output internal (menu4.3.AO0)
(menu4.3.AO0.1) Spe-
cific parameter (menu4.3.AO0.4)
Signal range (menu4.3.AO0.4.1)
Over-/underrun (menu4.3.AO0.4.3)
=MENU 4.3.AO0.4.3.1
The settings for the [
over-/underrun] can be used to specify
what actions should be taken in the event that limit values are
overrun/underrun.
1
Underrun 0 … 4mA (typic-
ally 2mA)
2
Overrun 20 … 23mA (typically
22mA)
Fig.15.43: Signal overrun / underrun
The signal range of the analogue output is from 0 … 23mA. The
range from 4 … 20mA is reserved for measured values. The
range from 0 … 4mA and the range from 20 … 23mA can also
be activated by the analogue output. These ranges are also nor-
mally used for signal outputs. Even if the signal range was previ-
ously set to 4 … 20mA, the signal can take values outside this
range and be used. In some cases, it may even be desirable that
the measured value signal is
not directly capped at the specified
limits.
The underrun value is typically 2mA, while the overrun value is
22mA. Only when these limits are undershot or overshot will
(optionally) the corresponding overrun / underrun values be out-
put.
Comply with the settings for the overruns / underruns in the local
instructions!
Not all official measurement locations in all regions of the EU
permit the use of "Underrun".