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Reference mark phasing
1. Move the readhead back and forth over the reference mark until the CAL LED stops flashing
and remains off. The reference mark is now phased.
2. The system automatically exits the CAL routine and is ready for operation.
3. For the safety function to be valid, customer commissioning tests must be performed:
see 'Commissioning test'
on page 14.
4. If the CAL LED continues double-flashing after passing the reference mark many times,
it is not detecting the reference mark. Ensure that the correct readhead configuration is
being used.
NOTE: The LED on the interface will flash blank when the reference mark is detected
(> 100 mm/s only). It indicates the presence of a reference mark, not the phasing status.
Calibration routine – manual exit
1. To exit the calibration routine at any stage press the CAL button. The CAL LED will
stop flashing.
2. For the safety function to be valid, customer commissioning tests must be performed: see
'Commissioning test'
on page 14.
CAL LED status during system calibration
CAL LED
Single flashing
Double flashing
Off (auto-complete)
Original instructions
Settings stored
None, restore factory defaults and recalibrate
Incremental only
Incremental and reference mark
Restoring factory defaults
When realigning the readhead, reinstalling the system, or in the case of continued calibration
failure, factory defaults must be restored.
To restore factory defaults:
1. Switch system off.
2. Press and hold the CAL button whilst switching the system on. The CAL LED on the
readhead will flash several times, indicating that the factory defaults have been restored.
3. Release the CAL button.
4. Check the
'Readhead mounting and alignment'
'System calibration'
on page 48).
NOTE: System must be recalibrated after restoring factory defaults.
Switching Automatic Gain Control (AGC)
on or off
The AGC can be switched on or off via the interface.
Press and hold the CAL button on the interface for > 3 seconds to switch AGC on or off. The CAL
LED on the readhead will be illuminated when AGC is active.
NOTE: The system must be calibrated before switching AGC on (see
on page 48).
on page
45
and recalibrate the system (see
'System calibration'
www.renishaw.com
49
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