SmartAct N20010, N34010
EN0B-0341GE51 R0307
4
Manual Adjustment
IMPORTANT
In order to prevent equipment damage, you must
remove power before manual adjustment.
After removing power, the gear train can be disengaged using
the declutch button, permitting the actuator shaft to be
manually rotated to any position. The feedback signal will
then follow the new position.
Limitation of Rotation Stroke
Two mechanical end limits (adjustable in 3° increments) are
provided (20 Nm [177 lb-in] models, only) to limit the angle of
rotation as desired (see Fig. 7).
Fig. 7. Mechanical end limits
The mechanical end limits must be securely fastened in place
as shown in Fig. 8. Specifically, it is important that they
properly mesh with the rotational angle scales when the
screws are tightened.
Fig. 8. Correct / incorrect tightening of end limits
Internal End Switches
NOTE:
Only those actuators for which the option "-SW2"
has been specified when ordering (e.g.: "N20010-
SW2") feature internal end switches.
The internal end switches are set to change from "common"
to "normally open" at angles of 5° and 85°, respectively, from
the totally counterclockwise position.
5°
10°
15°
92.5°
0°
90°
-2.5°
85°
80°
75°
85°
80°
75°
-2.5°
90°
0°
92.5°
5°
10°
15°
5°
10°
15°
0°
90°
85°
80°
75°
CCW internal
end switch
CW internal
end switch
actuator scale: clockwise
end switch scale
actuator scale: counterclockwise
Fig. 9. Internal end switches
Override
If terminal Y of the terminal strip (see section "Wiring
Diagrams" on page 6) is unplugged, the stroke will be 0%;
reversing the rotation direction using the rotation direction
switch will result in a max. stroke of 100%. If terminal Y is
jumped with terminal 1 (24 Vac), the stroke will be 50%.
INSTALLATION
These actuators are designed for single-point mounting.
IMPORTANT
In order to prevent equipment damage, you must
remove power or set the rotation direction switch to the
"Service/Off" position before manual operation.
Mounting Instructions
All information and steps are included in the Installation
Instructions supplied with the actuator.
Mounting Position
The actuators can be mounted in any desired orientation (no
IP54 if mounted upside down; see Fig. 10). Choose an
orientation permitting easy access to the actuator's cables
and controls.
IP54
IP54
IP54
IP54
Fig. 10. Mounting for IP54
Mounting Bracket and Screws
If the actuator is to be mounted directly on a damper shaft,
use the mounting bracket and screws included in the delivery
package.
