Mounting The Positioner - ABB AV1 Manual

Installation
The Type AV positioner can be used with double acting or
single acting actuators.

Mounting the Positioner

Due to the wide range of applications that the Type AV
positioner is suited for, only general information about
mounting is provided. Use the following procedure to
mount the positioner.
Install the positioner as required on the actuator. Figures B-
1 and B-2 show typical mounting arrangements. Use the fol-
lowing procedure for mounting guidelines.
NOTE: If the actuator is equipped with a Type AV
positioner as ordered, verify that all the connec-
tions are secure and make any adjustments as re-
quired.
1. Set the actuator at the zero position. Connect the ad-
justable linkage to the drive arm. The drive arm holes corre-
spond to stroke length of the actuator. Refer to Figure B-3 for
the stroke length for each drive arm hole.
2. Install the cam (black, direct acting; or red, reverse acting)
that will provide the required direction of rotation.
NOTE: Cams have three mounting holes:
A - square root; B - linear; C - square.
Each mounting hole is star shaped so the cam can be
rotated in 45° increments to suit the application.
3. With the actuator in the closed position, adjust the con-
necting linkage so that the zero radial line on the cam inter-
sects the center of the cam roller (Fig. B-4).
4. Lock all linkage components in place.
Figure B-1. Mounting Using Linkage (Typical)
AVI and AV2 POSITIONERS | SOI/ AV12 R E V. A
Figure B-2. Mounting Using Direct Coupling (Typical)
Figure B-3. Drive Arm Connections
Figure B-4. Cam Roller Alignment
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