ABB C1300 User Manual page 31

C1300
Advanced circular chart recorder
IM/C1300 Rev. J
Broken Sensor Protection Drive
In the event of an input failure, the process variable is driven in the direction selected:
Downscale – Process variable driven below zero
None
– Process variable driven in direction of failure
Upscale
– Process variable driven beyond full scale
Fault Detection Level Percentage
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.
Example – setting the fault detection level to 10% on input range of 50 (Engineering Range
Low) to 250 (Engineering Range High) bar causes an analog input failure fault to be detected
below 30 bar and above 270 bar.
Notes.

On some ranges the input circuitry may saturate before the fault level setting is reached. In
this case, an error is detected below the level set.

If an input exceeds the minimum or maximum value for the selected linearizer, an error is
detected regardless of the fault level setting.
Pen Filter
Filters the process variable input, i.e. if the input is stepped it smooths the transition between
steps and may also be used for some degree of cleaning of noisy inputs. The filter time
represents the time a step in the input takes to change the displayed process variable from 10 to
90% of the step.
Set the value required, between Off and 60 seconds in 1 second increments.
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3 Configuration
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