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15.7 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 16
requirements.
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).
38
FORTiS-N Functional Safety enclosed encoder system – original instructions
on page
40
for encoder power supply
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
Required action
No adjustment required
No adjustment required
Ensure the extrusion is parallel to
the machine axis of motion (see
section 12
on page 20) and adjust
the readhead to maximise the signal
strength along the full axis of travel
to achieve a Green or Blue LED
The 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 interfaces.
Remove power to reset.
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