N20, N34 SERIES CN7220, CN7234
CN0B-0341CH33 R0407
3
90 90
60
30
60
30
0
0
Rotation Direction Switch
Fig. 3. Rotation Direction Switch
feedback/control signal when
actuator is
rotation direction
switch position
totally
totally
Y=2
/2...10V
U = 2 V
U = 10 V
Y=0
/0...10V*
U = 0 V
U = 10 V
Y=0
/10...0V
U = 10 V
U = 0 V
Y=2
/10...2V
U = 10 V
U = 2 V
* Default shipping position.
Table 1. Feedback/control signal values
Feedback Signal and Manual Adjustment
If, while the actuator is not rotating, the user declutches it and
manually repositions the shaft adapter, the feedback signal
will then follow the new position at which the shaft adapter
has been left.
Power Off/On Behavior
In case the power to the actuator fails, after re-applying
power, the actuator acknowledges its present position and
follows the signal from the controller. This makes it
unnecessary for the actuator to employ autoadaption in order
to re-map the control signal settings.
Dip Switches
The actuators are equipped with two dip switches accessible
after removing the access cover (see Fig. 4).
Fig. 4. Dip switches (view with PCB at bottom)
Autoadapt Dip Switch for Normal Operation
In its default shipping position, the autoadapt dip switch for normal
operation is set to
ON
as shown in Fig. 4. Dip switches (view with
PCB at bottom)4. If it is set to OFF, no autoadapting is performed,
and the control signal map remains constant.
The autoadapt functionality does not have to be triggered. Rather,
the SmartAct actuator does this automatically when the min. and
max. control signals are provided (see Fig. 5); the feedback signal
is likewise autoadapted.
Fig. 5. Actuator positioning curve
Adjusting the Actuator for Autoadapt
In order to make use of the autoadapt functionality, proceed as
follows:
1. Set the autoadapt dip switch to the ON position.
2. If necessary, limit the stroke to the desired range using the
mechanical end limits.
3. Drive the actuator to the left end limit (totally counterclockwise)
by setting the control signal as specified in Table 1.
4. Drive the actuator to the right end limit (totally clockwise) by
setting the control signal as specified in Table 1. The stroke has
now been limited to 0...100% of the control signal range.
Voltage/Current Control Signal Selection Dip Switch
In its default shipping position, the voltage/current control signal dip
switch (see Fig. 4) is set to
OFF
(= voltage control).
as shown in Fig. 4. Setting it to
ON
results in current control.
Position Indication
The hub adapter indicates the rotation angle position by means of
the rotational angle scales (0...90° / 90...0°).
Fig. 6. Position indication
voltage/current control signal
dip switch (
)
OFF
autoadapt dip switch for
normal operation (
)
ON