Installing EK8./EK9./AK8./AK9./RK8M – A1GA/A2GA axial add-on encoder set (installation on rear of fan guard)

  1. For size 355: Connect the two halves of the coupling [233] by plugging them together using the coupling star. The coupling [233] must be firmly connected. Make sure that the encoder is centered [220].
  2. For size 63 – 315: Clean the cone of the encoder [220].
  3. For size 355: Clean the cone of the encoder [220] and the coupling [233].
  4. Remove the screw plug [A] of the encoder.
  5. For size 355: Place the coupling [233] onto the bolt [3012]. Tighten the retaining screw at the clamping hub on the motor side to fasten the coupling.
    • Tightening torque 3.3 Nm
  6. Retrofitting insulation coupling on the encoder mounting adapter: Insert the insulation coupling [1891] into the conical bore of the rotor [1] and tighten the central retaining screw.
    • Tightening torque 2.25 Nm
  7. Use solvent to remove the residual adhesive from the central retaining screw.
  8. For AK8H safety encoders: Wet the central retaining screw that is required in the following step with LOCTITE® 241.
  9. Insert the encoder [220] into the conical bore of the rotor [1] or the coupling [233]/[1891].
  10. To secure the encoder [220] in place, tighten the central retaining screw. Use a tool that is at least 45 mm long for this.
    • Counter-tighten the spanner flat SW27 of the coupling and SW10 of the encoder shaft.
    • Tightening torque 3.3 Nm
    • For safety encoders: Tightening torque 3.3 Nm ± 8%

    NOTICE

    For encoders RK8M, EK8W, AK8H, AK8W, EK9Z and AK8Z on DR2C.. motors, a calibration process must be carried out for flawless operation. See Additional work for the RK8M encoder on the DR2C.. motor and Additional work for EK8W, AK8H, AK8W, EK9Z, and AK8Z encoders on the DR2C.. motor.
    Failure to calibrate results in greater motor losses and reduced torque. In the worst-case scenario, the motor will not run.
  11. For safety encoders: Wet the screws that are required in the following step with LOCTITE® 241.
  12. Retrofitting insulation coupling on the encoder mounting adapter: Replace the support ring [1895] with the spacer ring [1895] and screw it securely in place with the new M5×10 screws [1896].
    • Tightening torque 7 Nm
  13. To seal the encoder [220], screw in the screw plug [A].
    • Tightening torque 1.8 Nm
  14. For size 71 – 355: Mount the fan guard [35] over the encoder [220]. When doing this, guide the connection adapter [U] with the signal cable through the central grille cutout of the fan guard [35]/the central opening of the support ring [1895].
  15. For safety encoders: Wet the screws that are required in the following step with LOCTITE® 241.
  16. For size 71 – 355: Screw the screws [232] through the grille of the fan guard [35] or the central opening of the support ring [1895] and into the nuts of the torque bracket [1889].
    • If you need to turn the encoder [220] in order for the screws to reach the nuts of the torque arm, turn the encoder [220] clockwise.
    • Tightening torque 3.3 Nm
    • For safety encoders: Tightening torque 3.3 Nm ±10%
  17. Screw the fan guard [35] firmly in place with the screws [22].
  18. Insert the connection adapter [U] into the recess of the support plate [3167].
    • Turn the connection adapter [U] until the 4 rectangular ridges are on the fastening side of the connection adapter [U] in the designated recesses of the support plate [3167].
    • Tighten the screws [D] in the connection adapter [U] and thereby fasten the support plate [3167] onto the connection adapter [U].
    • Tightening torque 2 Nm
  19. Mount the safety cover [361]/[657] over the encoder [220].
    • Guide the connection adapter [U] through the central grille cutout of the safety cover [361]/[657].
    • Screw the screws [3169] through the grille of the safety cover [361] or the support ring [3168] and into the thread of the support plate [3167].
    • Tightening torque 3.3 Nm
  20. For size 71 – 280: Place the safety cover [361] onto the fan guard [35].
  21. For size 315 – 355: Place the safety cover [657] onto the metal brackets [1710].
  22. Secure the safety cover [361]/[657] in place by using the screws [34]/[1711].
    • For size 71 – 132S: Tightening torque 2 Nm
    • For size 132M – 280: Tightening torque 3.5 Nm
    • For size 315 – 355: Tightening torque 12 Nm
  23. Place the connection cover [619] onto the connection adapter [U].
  24. For safety encoders: Wet the screws that are required in the following step with LOCTITE® 241.
  25. Screw the screws [E] through the bores in the connection cover [619] and into the bores in the connection adapter [U].
    • Tightening torque 2.25 Nm