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Function
high
low
closed
DI 1
DI 2
Operating mode 9
3 .5 .9 2-point operation with switchover of the running
times
Operating mode 9
Digital input DI 1 functions as a pulse input.
The actuator operates in high/low (high/closed) inter-
mittent mode via digital input DI 1.
In idle state (DI 1 with no signal), the actuator is in "low"
position ("low" position may also be 0° = "closed" posi-
tion).
DI 1
Off
On
IC 40 · Edition 07.18
t
t
1
2
Position
low/closed
high
t
t
3
4
The running times are switched over via DI 2.
DI 2
Off
On
Switchover of the running times may also occur during
movement of the actuator.
This function can also be used for fast movement to the
pre-purge position, for instance, with correspondingly
slow running time for burner operation.
Possible parameter set for this operating mode:
P 68025, see page 45 (Parameter sets).
t [s]
t [s]
Opening time
Closing time
t
1
t
3
t
2
t
4
26
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