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Function
high
middle
low
closed
DI 1
DI 2
Operating mode 6
DI 1 with continuous signal, for instance resulting from
inversion of the logic, see page 48 (Switching logic):
The actuator operates in high/low (high/closed) inter-
mittent mode via digital input DI 2 with two successive
running times up to 51 s (2 x 25.5 s).
DI 1 and DI 2 are connected in parallel:
The actuator operates with one signal in high/closed
intermittent mode with three successive running times
up to 76.5 s (3 x 25.5 s).
With three successive running times via interpolation
points, it is possible to change the opening character-
istic of the butterfly valve. For example, the character-
istic of the air circuit can be adapted to that of the gas
circuit.
IC 40 · Edition 07.18
t
t
1
2
t
t
3
4
Control via two digital inputs
If all possible combinations of the two inputs are used,
for instance by a PLC control system, it is possible to
implement high/middle/low/closed intermittent mode
(3 stages plus the "closed" position).
Possible parameter set for this operating mode:
P 68001, see page 45 (Parameter sets).
t
t
5
6
t [s]
t [s]
22
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