Description of Fault Codes
‑59‑
Cause
Troubleshooting
Solution
3. Acceleration/deceleration
is too frequent or the load
inertia is too large.
Calculate the mechanical
inertia ratio or perform
inertia auto‑tuning. Check
the value of H08.00 (Load
inertia ratio).
Confirm the individual
operation cycle when the
servo motor operates
cyclically.
Increase the acceleration/
deceleration time during
single‑cycle running.
4. The gain adjustment is
improper or the stiffness is
too high.
Check whether the motor
vibrates and generates
unusual noise during
operation.
Readjust the gain.
5. The servo drive model or
motor model is set
improperly.
Check the motor model
(H00.00) and drive model
(H01.10) stored in the bus
encoder.
Check the servo drive
nameplate and set the servo
drive model (H01.10) and
motor model properly
according to section "Servo
Drive Model and Nameplate"
in SV660F Series Servo Drive
Hardware Guide.
6. The motor is stalled due
to mechanical factors,
resulting in overload during
operation.
Check the reference and
motor speed (H0b.00)
through the software tool or
keypad.
● References in the position
control mode: H0b.13
(Input position reference
counter)
● References in the speed
control mode: H0b.01
(Speed reference)
● References in the torque
control mode: H0b.02
(Internal torque reference)
Check whether the reference
value is not 0 but the motor
speed is 0 rpm in the
corresponding mode.
Rectify the mechanical‑
related problem.
7. The servo drive is faulty.
The fault persists after the
servo drive is powered off
and on again.
Replace the servo drive.
Note
When E620.0 occurs, stop the servo drive for at least 30s before further operations.
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