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73
Rotation Limitation
The angle of rotation limiter, which is built into the actuator, is used in conjunction with
the tab on the universal clamp or IND-AFB position indicator. In order to function
properly, the clamp or indicator must be mounted correctly.
See
Figure A
.
The rotation limiter may not work in certain mounting orientations using the ZG-118
mounting bracket. Limiting the damper rotation must be accomplished by adjusting
the crank arm linkage.
The built-in rotation limiter may be used in 2 ways to control the rotational output of
the AFB, AFX series actuator. One use is in the application where a damper has a
designed rotation less than 90°. An example would be a 45° or 60° rotating damper.
The other application would be to set a minimum damper position which can be easily
set or changed without having to remove the actuator from the damper.
Damper Rotation Limiting
1. Determine the amount of damper rotation required.
2. Locate the Angle of Rotation Limiter on the actuator
Figure B
.
3. Position the limiter to the desired position, making sure the locating “teeth” on the
limiter are engaged into the locating holes on the actuator.
4. Fasten the limiter by screwing the attached screw.
5. Test the damper rotation either manually with the manual crank or apply power and
if required, a control signal. Re-adjust i
f
necessary.
Installation Instructions
Mechanical Installation
FIGURE B
9
Philips screwdriver
Z-AF For Replacing AF and NF Actuators
9 Nm / 80in-lb
AF..
NF..
N40103 - 09/11 - Subject to change.
© Belimo
Aircontrols (USA),
Inc.
