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IC 40 function
to “high” actuating travel. Accordingly, the closing speed is set
4.6 Analogue operating modes 21 – 27
General description, see page 22 (Operating modes).
4 .6 .1 2-point operation
Operating mode 21
In idle state (DI 1 with no signal), the actuator is in “low”
position (“low” position may also be 0° = “closed”
position).
If a signal is applied to digital input DI 1, the actuator
moves to the position pre-set via analogue input 4 – 20
mA. When the signal at DI 1 drops, the actuator moves
back to “low” position.
The actuator operates in circuit intermittent mode
analogue/low (analogue/closed), whereby the
analogue signal deter-mines the adjustment angle for
the “open” position (= setpoint).
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.
If no analogue value is pre-set, the actuator remains in
“low” position (“closed” position).
The opening speed is pre-set via the time t1 for the
entire “low” to “high” actuating travel. Accordingly, the
closing speed is set with t2 for the entire “high” to “low”
actuating travel.
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