Renishaw ATOM User Manual

50
ATOM linear encoder system
Fault Cause Possible solutions
LED on the readhead appears
white with ashes of other
colours as the readhead is
moved along the axis
AGC is switched on and the signal
levelis<70%
• 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.
LED on the readhead is double
ashing blue even after moving
it past the reference mark
several times
The readhead is not seeing
areferencemark
• Ensure you are moving the readhead past your chosen reference mark several times.
• Check the scale / readhead orientation.
• Check the scale / readhead alignment.
• Check the readhead optical window and scale are clean and free from contamination.
• 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).
No reference mark output
• Ensure you are not moving the readhead too fast during calibration mode (maximum speed <100mm / sec).
• Calibrate the system (page 45)
• If the system completes calibration mode, then it has successfully seen and calibrated the reference mark. If
you still cannot see a reference mark then check the system wiring.
• If the system does not calibrate the reference mark (LED on the readhead double ashes blue), see above for
possible solutions.
Reference mark is not
repeatable
Only the chosen reference mark
that has been used in the calibration
sequence is repeatable, other reference
marks may not be phased
• Ensure you are using the reference mark that has been calibrated for referencing your system.
• The readhead bracket must be stable and not allow any mechanical movement of the readhead.
• Check any unused reference marks have been deselected.
• Clean the scale and readhead optical window and check for damage then recalibrate the system over the chosen
reference mark.
LED on the readhead is
ashing red or blank over
thereferencemark
The reference mark is not phased
• Ensure you are using the reference mark that has been calibrated for referencing your system as only this reference
mark will be guaranteed to remain phased.
• The LED may ash blank or red when passing other reference marks if they have not been deselected (page 21).
• Clean the scale and readhead optical window and check for scratches then recalibrate the system over the chosen
referencemark (page 45).
Multiple reference marks output Unused reference marks have not been
deselected or FPC is damaged
• All unused reference marks should be deselected (page 21) as only the calibrated reference mark will be repeatable.
• Check alignment of deselection stickers.
• Replace damaged FPC (if applicable).

Renishaw ATOM Specifications

General

Brand	Renishaw
Model	ATOM
Category	Media Converter
Language	English