Renishaw ATOM User Manual

49
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Troubleshooting
Fault Cause Possible solutions
LED on the readhead is blank There is no power to the readhead
• Ensure 5V supplied at the readhead.
• For cable variants check correct wiring of connector.
• 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.
LED on the readhead is red
and I cannot get a green LED
The signal strength is <50% • 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
• Ya w
• Offset
• Check the scale and readhead orientation.
• Check that the readhead variant is the correct type for the chosen scale (see the ATOM
™
miniature encoder system
data sheet (Renishaw part no. L-9517-9563) for details of readhead conguration).
Unable to get a green LED
over the complete axis length
System run-out is not within specication
• Check that the readhead variant is the correct type for the chosen scale (see the ATOM
™
miniature encoder system
data sheet (Renishaw part no. L-9517-9563) for details of readhead conguration).
• Use a DTi gauge and check the run-out is within specications.
• Restore factory defaults.
• Realign readhead to obtain a green LED at the mid-point of the run-out.
• Recalibrate the system (page 45).
Cannot initiate the
calibrationroutine
Cabled D-type readhead does not have
CAL button
• 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.
LED on the readhead remains
single ashing blue even
after moving it along the full
axis length
The system has failed to calibrate the
incremental signals due to the signal
strength being <70% before the
calibration routine was initiated
• 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.
LED on the readhead
appearspurple
This is blue and red combined. AGC is
switched on and signal level is <50%
• 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.
NOTE: Analogue and digital systems have different pin-outs

Renishaw ATOM Specifications

General

Brand	Renishaw
Model	ATOM
Category	Media Converter
Language	English