SsiFrame
SSI Frame
configuration
error.
The sensor configuration
causes an issue related
to the SSI frame. This
error is currently raised
only if the SSI frame size
is higher than 256 bits.
0x7303,
0x7304
Please check the sensor
configuration, especially the object
Frame size according to the
documentation of the encoder
manufacturer.
SsiDtaLo
SSI Data is
permanently
Low.
The data line should be
set to high by the SSI
slave when it is ready to
establish
communication. This
error usually happens
when there is some issue
with the power or
communication link, e.g.
one of the wires is
broken or not well
connected.
0x7303,
0x7304
Please firstly make sure that the
encoder is connected to the port
which is being configured.
Then check the wiring accoding to
the hardware wiring instructions to
make sure that, firstly the signals
are transfered to the correct pins,
secondly the signal transfer is
stable. Assistance of measurement
tools such as multimeter and
oscilloscope is necessary.
SsiChksm
SSI Checksum
error.
Some SSI slaves include a
ckecksum of the data in
the SSI frame. Currently
our drives can be
configured to read a
parity bit from
compatible SSI encoders.
This error means the
parity bit computed by
the firmware is different
than the one sent by the
SSI slave.
0x7303,
0x7304
Regarding a checksum error, there
are several causes often seen:
1. Misconfiguration of the sensor
leading to the bits being read
wrong or the checksum being
calculated wrong. In this case the
fault cannot be reset. Please check
the sensor configuration according
to the documentation of the
encoder manufacturer.
2. Inconsistency in signal transfer.
In this case the fault can
sometimes be reset, but would
occur under certain circumstances.
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.
REM16MT Sensor Faults
Synapticon Documentation
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