Shihlin electric SDP Series, Manual

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AL.27 Encoder error 4
Alarm cause Checking method Corrective action
The internal memory of
the encoder error.
1.
Check if the grounding
of motor is normal.
2.
Check if the encoder
signal line is separated
from the power line or
high current line to avoid
interference.
3.
Check whether the wire
of encoder has a
shielding net.
1.
Connect the U,V,W
ground terminal (green
wire) to the heat sink
base of the drive.
2.
Please separate the
encoder cable from the
motor power cables and
high current cables.
3.
Use the wire with
shielding net.
4.
If the issue persists,
send it back to the
distributor or
manufacturer.
AL.28 Encoder overheat
Alarm cause Checking method Corrective action
Encoder operating
temperature is higher than
95
℃
.
Put encoder away from
heat source and do not
operate in high temperature
environment.
1.
Do not operate in high
temperature
environment and wait
for the encoder board
cool down to room
temperature.
2.
If the issue persists,
send it back to the
distributor or
manufacturer.