IC 40 · Edition 07.18
26
t [s]
high
low
closed
DI 1
DI 2
t [s]
t
1
t
2
t
3
t
4
Function
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
Position
Off
low/closed
On
high
The running times are switched over via DI 2.
DI 2
Opening time
Closing time
Off
t
1
t
2
On
t
3
t
4
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).
Operating mode 9