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IC 40 function > Analogue operating modes 21 – 27
4.6.7 2-step operation with two digital inputs and
variable adjustment angle
Operating mode 27In idle state (DI 1 and DI 2 with no
signal), the actuator is in “closed” position and the
butterfly valve is closed.
If a signal is applied to DI 1 (DI 2 with no signal), the
butterfly valve moves to “low” position (ignition position
and low-fire rate position).
If a signal is applied to DI 2 (DI 1 with no signal), the
butterfly valve moves to “high” position for pre-purge
(high-fire rate).
If a signal is applied to DI 1 and DI 2, the butterfly valve
can be moved steplessly between the low-fire rate
position and the high-fire rate position via the analogue
input AI. The adjustment angle for the “open” position
which can be varied via the analogue signal is set in
BCSoft®.
Example: 4 mA for 60% opening and 20 mA for 100%
opening.
Example of application, see page 12 (IC 40,
continuous control with defined ignition position) 51
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