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IC 40 function > Standard operating modes 1 – 12
4.5.12 3-point step operation with low position
Operating mode 12
If a three-point step signal is applied to DI 1 (DI 2 with no
signal), the butterfly valve moves to “high” position.
If a three-point step signal is applied to DI 2 (DI 1 with no
signal), the butterfly valve moves to “middle” position.
If no three-point step signal is applied to the inputs (DI 1
and DI 2 with no signal), the actuator stops and the
butterfly valve remains in its current position.
If a three-point step signal is applied to inputs DI 1 and
DI 2, the actuator moves from the low-fire rate position
to “low” position.
Example of application, see page 10 (IC 40,
continuous control by three-point step signal)
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