Description of Fault Codes
‑76‑
Cause
Confirming Method
Solution
1. The encoder cable
connections are incorrect or
loosened.
1. Check the encoder cable
connections.
2. Check whether vibration
on site is too strong,
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.
● E770.7: Fully closed‑loop Inovance 2nd encoder communication error
Cause
Confirming Method
Solution
1. The encoder is wired
improperly.
Check the wiring of the
encoder.
Connect the encoder cables
according to the correct
wiring diagram.
2. The encoder cable is
loosened.
Check whether vibration on
site is too strong, which
loosens the encoder cable
and even damages the
encoder.
Re‑connect encoder cables
and ensure encoder
terminals are connected
securely.
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