Fault finding
RTP20
CAUTION:
RTP20 is designed for automated operation under direct control of the CMM software. To avoid possible collision
during use, RTP20 must not be unlocked, re-orientated or locked by hand during normal operation.
Poor measuring performance
Possible causes
Remedy
Loose mounting
Ensure shank mounting screws are tight and mounting to CMM is
secure.
Problem with TP20 probe module
Diagnosis of the probe unit should be carried out with axes correctly
locked an without head adjustment between probe points.
Problem with swivelling / indexing unit
Diagnosis of the indexing unit should only be carried out following
satisfactory probe performance.
No probe signal and / or no probe status LED
Possible causes
Remedy
Cable faulty / not connected
Check continuity of cabling from head to interface / machine control.
Probe interface faulty / not connected
Ensure correct connection of interface / machine control.
Poor repeatability (RTP20 only)
Possible causes
Remedy
Axes lock procedure incorrect
Using automated cycle ensure lock lever is fully rotated to lock
position.
Axes unlock procedure incorrect
Using automated cycle ensure lock lever is fully rotated into unlock
position during indexing.
Forces imparted onto head during lock-up
Using automated cycle unlock and re-lock.
Attempted lockup in incorrect unqualified position
Using automated cycle unlock, reposition correctly and re-lock.
Axes ‘rattling' during indexing ﴾RTP20 only﴿
Possible causes
Remedy
Incorrect unlock procedure
Using automated cycle ensure lock lever is fully rotated to unlock
position.
Incorrect indexing procedure
Using automated cycle index each axis separately.
NOTE:
The RTP20 is not user serviceable and should be returned to Renishaw if suspected faulty.
RTP20 user's guide
www.renishaw.com
Issued 07 2019
21
