How to Adjust the Limit Switch on PA-17 Actuators

Accessing the Limit Switch

1. Remove the Actuator Bottom Case:
   • Locate the actuator's bottom case on the motor side.
   • Unscrew the five actuator base screws to remove the bottom case.
   • Unscrew the power cable lock screw and move it down the cord.
   • Carefully remove the actuator bottom case to expose the limit switch assembly.

Adjusting the Limit Switch

1. Identify the Limit Switch Components:

   • The limit switch assembly includes limit switch cams and gears.
   • The inner limit switch cam controls the retraction limit, while the outer cam controls the extension limit.

2. Make Adjustments:

   • Use a Sharpie to mark the original position of the limit switch gears and cams for reference.
   • To adjust the stroke limit, move the limit switch cam by one gear tooth position. This will change the extension or retraction distance in 0.5-inch increments.
   • It is recommended to extend or retract the actuator to your desired end stroke position before adjusting the limit switch cam. This ensures that the actuator stops at the correct distance.

3. Secure the Adjustments:

   • After making the adjustments, reassemble the actuator by replacing the bottom case and securing it with the screws.

Conclusion

Adjusting the limit switch on your PA-17 actuator is a straightforward process that involves accessing the internal components and making precise adjustments to the limit switch cams. Following these steps will help ensure your actuator operates within the desired range. If you have further questions or need assistance, please contact customer support.