Description of Fault Codes
‑35‑
Cause
Confirming Method
Solution
The motor model (H00.00) is
set improperly.
Check whether the value of
H00.00 matches the used
motor.
Rectify the value of H00.00.
● E120.2: Unknown drive model
Cause:
The servo drive detects the servo drive model defined by H01.10 during
initialization upon power‑on. If the servo drive model does not exist, E120.2
occurs.
Cause
Confirming Method
Solution
The servo drive model
(H01.10) is set improperly.
Check the value of H01.10.
Disable servo drive model
auto detection and set
H01.10 to a proper value
manually..
● E120.5: Motor and drive current mismatch
Cause:
The rated output of the servo drive is far higher than the rated current of the
motor. You must use a servo drive of lower rated output or a motor with higher
rated current.
Cause
Confirming Method
Solution
The internal scale value is
abnormal.
Check whether the servo
drive model is correct. If the
set current sampling
coefficient is too large,
calculation overflow will
occur.
Replace the servo drive.
● E120.6: FPGA and motor model mismatch
Cause:
■ The motor model is set improperly, causing mismatch and malfunction of the
servo drive.
■ The motor model is set properly, but the motor encoder is not supported by
the servo drive.
Cause
Confirming Method
Solution
FPGA software version and
H00.00 mismatch
Check whether the FPGA
software version (H01.01)
supports the motor model
set by H00.00.
Update the FPGA software to
support the motor model
motor.
● E120.7: Model check error
Cause:
The servo drive model parameter cannot be identified.