Renishaw ATOM User Manual

45
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No interface ACi interface Ri interface Ti interface
Ground the CAL pin
for <2seconds
Connect the CAL
pads together or
ground the remote
CAL line (pin 8) for
<2seconds
Press the CAL button
on the side of the
interface for <2seconds
using a 2mm
Allen key or similar tool.
Press the CAL button on
the end of the interface
for <2seconds using
a 2mm Allen key or
similar tool.
WARNING: Activating the CAL switch only requires
2.5Nforce. Applying excess force may permanently
damage the switch.
Step 1 – Incremental signal calibration
• Initiate calibration routine.
System calibration
Calibration (CAL) is an essential operation that completes readhead set-up, with the optimum
incremental and reference mark signal settings stored in the readhead’s non-volatile memory.
Before system calibration:
• Clean the scale and readhead optical window
• If reinstalling, restore factory defaults (see ‘Restoring factory defaults’ on page 47)
• Ensure AGC is switched off (readhead set-up LED is green, red or orange)
• Maximise the signal strength along full length of travel (readhead set-up LED is green)
• The readhead set-up LED will now periodically single-ash blue to indicate that it is in the incremental
signal calibration routine. The set-up signal (V
X
) will be a nominal 0V.
• Slowly move the readhead along the axis, ensuring you do not pass a reference mark, until the
readhead set-up LED starts double-ashing blue. This indicates the incremental signal is now
calibrated and the new settings are stored in the readhead memory. The set-up signal (V
X
) will be a
nominal 1.65V.
• The system is now ready for reference mark phasing.
• For systems without reference mark, go to ‘Calibration routine - manual exit’.
• If the system does not automatically enter the reference mark phasing stage (no double-ashing
blue of the readhead set-up LED) the calibration of the incremental signals has failed. After ensuring
failure is not due to overspeed (>100mm/s), exit the calibration routine, restore factory defaults and
check the readhead installation and system cleanliness before repeating the calibration routine.
NOTE: Maximum calibration speed 100mm/s or less than the readhead maximum speed,
whichever is slowest.
Two
CAL
pads
CAL
button

Renishaw ATOM Specifications

General

Brand	Renishaw
Model	ATOM
Category	Media Converter
Language	English