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14.7 Validating an installation
To validate the encoder installation the set‑up LED provides instant verification of the encoder's signal
strength and therefore its accurate alignment and installation.
The encoder requires power to enable the set-up LED; this can be via an appropriate cable plugged into
the machine's controller. See
section 15 on page 25
NOTE: If the set-up LED is obscured then the signal strength can be obtained using the Advanced
Diagnostic Tool for absolute encoders (ADTa-100).
LED status
Description
BLUE
Signal level is optimal
GREEN
Signal level is good
ORANGE
Signal level is acceptable
Signal level is NOT
RED
acceptable
FLASHING
Unable to determine the
RED
position
Original instructions
for encoder power supply requirements.
Required action
No adjustment required
No adjustment required
Ensure the extrusion is parallel to the
machine axis of motion
(see section 11
on page 11)
and adjust the readhead
to maximise the signal strength along the
full axis of travel to achieve a Green or
Blue LED
Readhead not picking up the scale due to
contamination or poor installation
NOTE: Flashing LED indicates scale
reading error. Flashing state is latched for
some serial protocols.
Remove power to reset.
23
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