Digital Input Configuration - ABB SM2000 User Manual

...4 CONFIGURATION
...4.6.2 Analog Input Configuration

4.6.3 Digital Input Configuration

N
ote. This tab is displayed only if the Source ID for this Recording Channel is a digital source – see Section 4.6.1.
•1 If this parameter is changed, a new internal data file for this recording channel is created. All historical data stored internally for this
channel is lost.
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Set the time period over which the process variable is to be
filtered prior to being sampled (0 to 60 seconds).
Set a tolerance level (between 0 and 100% of the
engineering range) to allow for deviation of the input signal
above or below the input span before an input failure is
detected.
– setting the fault detection level to 10% on an input
Example
range of 50 to 250 bar causes an 'Analog Input Failure' fault
to be detected below 30 bar and above 270 bar.
In the event of an input failure, recorder channels can be set
to drive upscale, downscale or in the direction of failure.
Upscale – channel value driven beyond full scale.
None – driven in direction of failure.
Downscale – channel value driven below zero.
Note. This parameter is displayed only if 'Analog I/P Type' is
•1
set to 'Volt free digital input'. If this parameter is changed to
anything other than 'Volt free digital input', the input channel
reverts back to an analog input channel – see Section 4.6.2.
Enter the tag to be displayed on channel indicators when the
•1
digital signal is active (6 characters max.) .
Note. Tags with a high percentage of capital letters and
wide characters such as 'W' or 'M' may appear truncated in
some Operator Views. In such cases, use lower case letters
or fewer characters.
Enter the tag to be displayed on channel indicators when the
•1
digital signal is inactive (6 characters max.).
Enter the tag name to be displayed on channel indicators and
used to identify the channel in archive files (8 characters max.).
Note. Tags with a high percentage of capital letters and
wide characters such as 'W' or 'M' may appear truncated in
some Operator Views. In such cases, use lower case letters
or fewer characters.
Enter the tag name to be displayed on the process view and used
in the archive files (20 characters max.).