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IC 40 function > Standard operating modes 1 – 12
4.5.7 2-point operation with switchover of the adjustment
angle for the “open” position
Operating mode 7
In idle state (DI 1 and DI 2 with no signal), the actuator is
in “low” position (“low” position may also be 0° =
“closed” position).Digital input DI 1 functions as a pulse
input.
DI 2 has no signal: The actuator operates in high/low
(high/closed) intermittent mode via digital input DI 1.
Signal at DI 2:
The actuator can switch over its intermittent mode
between high/low (high/closed) and middle/low
(middle/closed) during ongoing operation. The
adjustment angle for the “open” position is then
approached with signal at DI 1 and switched over via DI
2
The actuator now operates in middle/low
(middle/closed) intermittent mode via digital input DI 1.
The heat output can now be reduced and it is
nevertheless possible to continue operation in
intermittent mode so as to ensure a uniform temperature
distribution. High/low may also be used for purging and
middle/low may also be used for heating mode in order,
for instance, to reduce the pre-purge time.
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