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Loading a probe arm

  • Recall the pin datum XD, YD, ZD set in step 8 of the port datum procedure in the 'Port datum procedure' section
  • Ensure the PHS-2 does not have a probe arm fitted
  • Ensure the PHS-2 is oriented into the correct position to enter the port (D 0°, E ­90°)

Position relative to pin datum XD, YD, ZD:



Stand off position.

Head is in front of port with no probe arm fitted. Head is oriented to D 0°, E ­90°.


Transit stage.

PHS-2 contacts the ACR2 port lid.


Transit stage.

Renishaw recommends that servo control of the head axes should be switched off at this point.

NOTE: Remove only 24 V servo power from the head. Do not remove logic power as this will cause head position loss.



PHS2 located in ACR2 port clear of probe arm.


Locate PHS2 head onto probe arm ready for lock sequence.


Lock probe arm to PHS-2 head.


+14.5-31.5DMove probe arm lock mechanism to normal position.




EMove ACR2 port into fully locked position.

Transit stage.

Probe arm begins to clear port location pins. Servo control of the head should be re-enabled.

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Transit stage.

PHS2 clears the ACR2 port lid. Probing system can now be enabled. Note that the position of the head may have changed under gravity and that the head should be held in its current position before returning to the previous orientation



Stand off position.

Head is in front of port with new probe arm fitted.