Troubleshooting - Renishaw ATOM Installation Manual

Troubleshooting

Fault Cause
LED on the readhead is blank
There is no power to the readhead
LED on the readhead is red
The signal strength is < 50%
and I cannot get a green LED
Unable to get a green LED System run-out is not within specification
over the complete axis length
Cannot initiate the Cabled D-type readhead does not have
calibration routine CAL button
LED on the readhead remains
The system has failed to calibrate the
single flashing blue even incremental signals due to the signal
after moving it along the full strength being < 70% before the
axis length calibration routine was initiated
LED on the readhead This is blue and red combined. AGC is
appears purple switched on and signal level is < 50%
Possible solutions
• Ensure 5 V supplied at the readhead.
• For cable variants check correct wiring of connector.
NOTE: Analogue and digital systems have different pin-outs
• When using Ti, Ri or cabled ACi interfaces check the interboard connector that plugs in the interface is properly
seated and the correct orientation.
• For FPC variants check correct insertion and orientation of the FPC cable.
• Check the readhead optical window and scale are clean and free from contamination.
• Restore factory defaults (page 47) and check alignment of the readhead. In particular;
• Rideheight
• Yaw
• Offset
• Check the scale and readhead orientation.
• Check that the readhead variant is the correct type for the chosen scale (see the ATOM
data sheet (Renishaw part no. L-9517-9563) for details of readhead configuration).
• Check that the readhead variant is the correct type for the chosen scale (see the ATOM
data sheet (Renishaw part no. L-9517-9563) for details of readhead configuration).
• Use a DTi gauge and check the run-out is within specifications.
• Restore factory defaults.
• Realign readhead to obtain a green LED at the mid-point of the run-out.
• Recalibrate the system (page 45).
• If not using an interface with a CAL button, check that the correct pin is being shorted to 0 V for < 2 seconds.
• Check that the signal size is > 70% before initiating calibration.
• Exit CAL mode and restore factory defaults (page 47).
• Check system set-up and realign the readhead to obtain a green LED along the full axis of travel before recalibrating.
• Check the readhead optical window and scale are clean and free from contamination.
• Restore factory defaults (page 47) then check the LED is green along the full axis and recalibrate the system (page 45).
If it is not green, check the alignment of the readhead.
miniature encoder system
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miniature encoder system
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