Shihlin electric SDP Series, Manual

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AL.21 Motor UVW cable disconnection
Alarm cause Checking method Corrective action
When Motor U,V,W
cable disconnection
is detected. Check if the Motor U,V,W cable
is loose. Reconnect the U,V,W
cables.
AL.22 Encoder communication error.
Alarm cause Checking method Corrective action
The encoder has
three consecutive
CRC code errors
or internal memory
errors.
1.
Check if the grounding of
motor is normal.
2.
Check whether 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 an 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.23 Excessive position error of full-closed loop control
Alarm cause Checking method Corrective action
Position control deviation
pulses exceed PA25
setting value. 1. check if PA25 setting
value too small.
2. Check if the connector is
loose or there is other
connection problem on the
other mechanical parts. 1. Increasing PA25 setting
value.
2.Make sure the connector
is firmly connected or there
is no problem when the
connector connects to the
mechanical parts.