Troubleshooting - Renishaw ATOM Installation Manual

Troubleshooting

Fault
LED on the readhead is Blank
LED on the readhead is Red and I can't
get a Green LED
Unable to get a Green LED around a
complete rotation
Can't initiate the calibration routine
LED on the readhead remains single
flashing Blue even after moving it
around the full rotation
ATOM
rotary installation guide
Cause
There is no power to the readhead
The signal strength is <50%
System run-out is not
within specification
Cabled D-type readhead does not
have CAL button
The system has failed to calibrate the
incremental signals due to the signal
strength being <70% before the
calibration routine was initiated
Possible solutions
Check you have 5 V at the readhead
u
For cable variants check correct wiring of connector.
u
NOTE: Analogue and digital systems have different pin-outs
When using Ti or Ri interfaces check the Hirose connector that plugs in the interface is properly seated and
u
the correct orientation
u For FPC variants check correct insertion and orientation of the FPC cable
Check the readhead optical window and disc are clean and free from contamination
u
Restore factory defaults (see page 17) and check alignment of the readhead
u
– Rideheight
– Yaw
– Offset
Check the disc and readhead orientation
u
Check that the readhead variant is the correct type for the chosen scale
u
(see the ATOM data sheet (L-9517- 9563) for details of readhead configuration)
Check that the readhead variant is the correct type for the chosen disc
u
(see the ATOM data sheet (L-9517- 9563) for details of readhead configuration)
Use a DTI gauge and check the run-out is within specifications
u
Restore factory defaults
u
u Realign readhead to obtain a Green LED at the mid-point of the run-out
Recalibrate the system (see page 17)
u
For 20 µm systems a Green or Orange readhead set-up LED is acceptable around the full axis of rotation.
u
However the system must be calibrated over an area of scale with a Green LED.
u 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 LED is Green before initiating calibration
u
Exit CAL mode and restore factory defaults (see page 17)
u
Check system set-up and realign the readhead to obtain a Green LED around the full axis of rotation
u
before recalibrating
19