YSI DIQ/S 182-MOD System 182 User Manual
Page 97
System 182
Relay outputs
6 - 11
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02/2012
Characteristic curves
Through the selection of the Start value and End value, the proportional
output can be operated with a positive or negative characteristic curve.
Positive characteristic curve:
Select the End value to be greater than the Start value.
The turn-on duration or frequency increases with an increasing
measured value (see page 6-12).
Negative characteristic curve:
Select the End value to be smaller than the Start value.
The turn-on duration or frequency decreases with an increasing
measured value (see page 6-13).
The maximum values for the pulse width or switching frequency are
assigned to the End value value and the minimum values for turn-on
duration or frequency are assigned to the Start value value.
Fig. 6-6
Positive characteristic curve
Fig. 6-7
Negative characteristic curve
Measured value
Switching frequency f or
Pulse
v
width
End value
Start value
Max.
Min.
Measured value
Start value
End value
Max.
Min.
Switching frequency f or
Pulse
v
width