Description of Fault Codes
‑36‑
Cause
Troubleshooting
Solution
1. The encoder cable
connections are incorrect or
loosened.
Check the encoder cable
connection. Check whether
ambient vibration is too
large, which loosens the
encoder cable and even
damages the encoder.
1. Connect the encoder
cables according to the
correct wiring diagram.
2. Re‑connect encoder
cables and ensure
encoder terminals are
connected securely.
2. The servo drive is faulty.
The fault persists after the
servo drive is restarted.
Replace the servo drive.
● E136.2: torque ripple compensation data check error
Description:
Compensation data check error
Cause
Troubleshooting
Solution
Data check error
Check the encoder type and
power on the servo drive
again.
Check the encoder type and
power on the servo drive
again.
● E150.0: STO safety state applied
Description:
The STO input protection applies (safety state).
Cause
Troubleshooting
Solution
Two 24 V inputs are
disconnected
simultaneously, triggering
the STO function.
1. Check whether the STO
function is activated.
There is no need to take any
corrective actions. After the
STO terminal is back to
normal, clear the fault using
the fault reset function.
2. Check whether the STO
power supply is normal.
Check whether the 24 V
power supply for the STO is
stable. Tighten the cables
that are loose or
disconnected.
3. The fault persists after
preceding causes are
rectified.
Replace the servo drive.
● E150.1: STO input state abnormal
Description:
The single‑channel input of STO is ineffective.
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