Inspect the follower sensor array

WHAT YOU NEED 

Tools:Screwdriver SetRuler

Safety Equipment:Standard Personal Protective Equipment

  1. Press the E‑stop button on the operator console.
  2. Disconnect the follower power cable from the follower servo drive in the electrical cabinet.
  3. Release the E‑stop button and press the green CONTROL button on the operator console.

  4. Check the follower sensor alignment as follows:

    1. Place a 90‑mm-wide board flat on the AIT conveyor underneath the follower sensor array.

    2. Place a ruler across the board parallel to the laser dots from the sensor array and verify the following measures:

      • The laser dot farthest from the follower rail should be 20 mm away from the edge of the re-ref sensor bracket.
      • All laser dots should be 35 mm apart from each other.
    3. If required, loosen the two screws holding the individual sensor bracket to the main array bracket, twist to the correct position and re‑tighten.

  5. Check the trigger point of the sensors as follows:

    1. Place an object 15 to 20 mm above the AIT rollers and make sure the orange sensing LED on each sensor toggles when the object crosses the beam or is removed.
    2. If any sensor triggers higher or lower than 15 to 20 mm above the AIT rollers, use a screwdriver to adjust the gain screw terminal on the head of the sensor.

    3. Manually push the follower up and down the rail and monitor the sensors when crossing the AIT rollers. If a sensor triggers while passing every roller, please re‑adjust it.

      Note: a small occasional flicker is acceptable.

    4. Place a 35‑mm-thick board on the AIT conveyor and pass across each sensor to make sure they all trigger. If a sensor does not trigger, please re‑adjust it.

  6. Check the sensors are monitored by the PMAC as follows:

    1. Open the PEWIN32PRO program.
    2. Select Watch Window from the View drop-down menu at the top of the PEWIN32PRO window.
    3. Press the Insert key and add the TimberAtPaddleProx variable (either M1013 for older machines or M912 for newer machines) to the Watch Window.
    4. Trigger each sensor one by one and make sure the variable changes from 0 to 1 for each sensor.
  7. Press the E‑stop button on the operator console.
  8. Reconnect the follower power cable onto the follower servo drive in the electrical cabinet.
  9. Release the E‑stop button on the operator console.