QeiNoIdx QEI No Index. For an incremental
encoder configured to be
with 3 channels (usually
known as ABI/ ABZ), the
drive is expecting to
receive an Index pulse
which provides an index
for the absolute singleturn
position.
This error indicates that
the Index pulse couldn't be
detected, while the drive
moved the motor in order
to detect it.
Please first check whether your encoder is
indeed with the Index pulse, i.e. is an ABI/
ABZ encoder. If it is an encoder without
index, please choose 2-channel (no index) for
Number of channels.
Else, most probable causes are:
1. The encoder being improperly mounted,
or the encoder ring is damaged. Please
check the mounting instruction of your
encoder for proper installation, and consult
the encoder manufacturer for advices.
2. Inconsistency in signal transfer. Please
check the signals received by the drive with
an oscilloscope under operation for better
investigation. The cause can be that the
signal transfer is influenced by external field,
or that the signal transfer is unstable for
example due to soldering quality or cable
aging. Improve the situation by replacing the
cables, better arranging the cables, adding
shielding, etc., ensuring that the signals can
be stably transfered with acceptable noise.
QeiOpnWr QEI Open Wire. Indicate that one of the
differential A or B lines is
disconnected. Only
available on hardware that
supports it.
Please check the wiring with for example the
diode mode of a multimeter, making sure
that the wires are stably transfering the
signals.
Hall Sensor Faults
HallSeq Hall Sequence
error.
The hall sensor outputs
have an invalid value (111
or 000), or the sequence
between the current state
and the last state is
invalid.
Please check the wiring and make sure that
the signals are transfered with good
consistency.
If the HALL sensor is used together with an
incremental encoder for commutation, it can
be that the HALL sensor A/B/C pins are
connected in a wrong order. Please verify the
cabling, and verify the order by running
offset detection with only the HALL sensor
configured for commutation. If the order is
correct, the result of the offset detection
should be around 0, and 0x2003:5 Motor
phases inverted should show 0 (No).
A-Format sensor faults
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