SD710 Series Servo Drive User Manal Chapter 10 Troubleshooting
16
◆
Turn off the servo enable signal and
rotate the motor shaft by hand to see if the
encoder feedback position changes with
the motor shaft rotation.
8. Servo failure.
◆
The main circuit power was
reconnected several times, but the fault
was still reported.
Replace the servo.
Error code
ER. 102
Single tube fail-safe
Reason
single tube voltage anomaly
Treatment.
Reasons
Confirmation method
Handling measures
1. Output out of phase,
blocked rotation
◆
Check if has output out of phase.
◆
Check that the motor is not blocked.
Check that the load does not
exceed the actual permissible
load range of the motor.
Error code
ER. 320
Regenerative overload
Reason
The heat accumulation of the regenerative braking resistor exceeds the fault threshold.
Treatment.
Reasons
Confirmation method
Handling measures
1. The supply voltage is
outside the specification
range.
◆
Measure the supply voltage.
Set the supply voltage within the
specification range.
2. External regeneration
resistor value or
Insufficient capacity of the
regenerative resistor, or
In a state of continuous
regeneration.
◆
Confirm operating conditions or
capacity.
Change
of
regeneration
resistance value, regeneration
resistance capacity.
3. The set capacity is less
than the capacity of the actual
external regeneration resistor.
◆
Confirm the connection and capacity
value of regeneration resistor
Calibration of the capacity value
of the regeneration resistor.
4. The external regeneration
resistor has too large a
resistance.
◆
Check that the regeneration
resistance value is correct.
Correctly set the resistance and
capacity of the regenerative
resistor.
5. Subject to external drag
regeneration state.
◆
Verify that the operation is not
affected by external dragging influence
Correctly set up the system
including servo and mechanical
operating conditions, using a
common DC busbar.
6. The large load inertia
causes regenerative energy in
deceleration, resulting in
higher DC bus voltage and
insufficient energy absorption
by the regenerative resistor.
◆
Check the deceleration time of the
motor during the deceleration process.
◆
Check the regeneration resistor load
factor.
◆
Check the regeneration warning
display.
Increase motor and inverter
capacity, slow the deceleration
time.
Use
the
external
regeneration resistor.
7. Motor rotation speed is too
high to absorb regenerative
energy within the specified
◆
Check the deceleration time of the
motor during the deceleration process.
◆
Check the regeneration resistor load
Increase motor and inverter
capacity, slow the deceleration
time.
Use
the
external