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When in Trouble
Protectivefunction Causes MeasuresErrorcode No.*Over-current protection14 Current through the converter portion has exceeded
the specified value.
1)Failure of servo driver (failure of the circuit, IGBT or
other components)
2)Short of the motor wire (U, V and W)
3)Earth fault of the motor wire
4)Burnout of the motor
5)Poor contact of the motor wire.
6)Melting of the relays for dynamic brake due to
frequent Servo-ON/OFF operation
7)The motor is not applicable to the driver.
1)Turn to Servo-ON, while disconnecting the motor. If
error occurs immediately, replace with a new driver.
2)Check that the motor wire (U, V and W) is not
shorted, and check the branched out wire out of the
connector. Make a correct wiring connection.
3)Measure the insulation resistance between motor
wires, U, V and W and earth wire. In case of poor
insulation, replace the motor.
4)Check the balance of resister between each motor
line, and if unbalance is found, replace the motor.
5)Check the loose connectors. If they are, or pulled
out, fix them securely.
6)Replace the driver. Prohibit the run/stop operation
with Servo-ON/OFF.
7)
Check the name plate and capacity of the motor and
driver, and replace with motor applicable to the driver.
*Over-heat protection 15Temperature of the heat sink or power device has been
risen over the specified temperature.
1)Ambient temperature has risen over the specified
temperature.
2)Over-load
1)Improve the ambient temperature and cooling
condition.
2)Increase the capacity of the driver and motor.
Set up longer acceleration/deceleration time.
Lower the load.
Over-load protection 16 Torque command value has exceeded the over-load
level set with SV.Pr72 (Overload level) and resulted in
overload protection according to the time
characteristics (described later)
1)Load was heavy and actual torque has exceeded the
rated torque and kept running for a long time.
2)Oscillation and hunching action due to poor
adjustment. Motor vibration, abnormal noise. Inertia
ratio (SV.Pr20) setup error.
3)Miswiring, disconnection of the motor.
4)Machine has collided or the load has gotten heavy.
Machine has been distorted.
5)Electromagnetic brake has been kept engaged.
6)While wiring multiple axes, miswiring has occurred by
connecting the motor cable to other axis.
7)SV.Pr72 setup has been low.
Check that the torque (current) does not oscillates nor
fluctuate up an down very much on the graphic screen
of the PANATERM®. Check the over-load alarm display
and load factor with the PANATERM®.
1)I
ncrease the capacity of the driver and motor. Set up
longer acceleration/deceleration time. Lower the load.
2)Make a re-adjustment.
3)Make a wiring as per the wiring diagram. Replace the
cables. Connect the black (W phase),
white (V phase) and red (U phase) cables in
sequence from the bottom at the CN X2 connector.
4)Remove the cause of distortion. Lower the load.
5)Measure the voltage between brake terminals.
Release the brake
6)Make a correct wiring by matching the correct motor
and encoder wires.
7)Set up SV.Pr72 to 0. (Set up to max. value of 115%
of the driver)
*Over-regeneration load protection18 Regenerative energy has exceeded the capacity of
regenerative resistor.
1)
Due to the regenerative energy during deceleration caused
by a large load inertia, converter voltage has risen, and the
voltage is risen further due to the lack of capacity of
absorbing this energy of the regeneration discharge resistor.
2)Regenerative energy has not been absorbed in the
specified time due to a high motor rotational speed.
3)Active limit of the external regenerative resistor has
been limited to 10% duty.
Check the load factor of the regenerative resistor on
the monitor screen of the PANATERM®. Do not use in
the continuous regenerative brake application.
1) Improve the regenerative processing capability, e.g.,
increase the motor and driver capacity, put external
regenerative resistor, etc.
2) Reduce the regenerative energy at deceleration,
e.g., lower the motor rotation speed, make the
deceleration time longer, etc.
3) If SV.Pr6C (External regenerative resistor set up) is
“0” and an internal regenerative resistor is used, and
if SV.Pr6C is “3” and an external regenerative
resistor is not used, use the external regenerative
resistor and try to set SV.Pr6C to “1”.
If the external regenerative resistor is used and
SV.Pr6C is set to “1”, secure any external over-
regeneration load protection measures and try to set
SV.Pr6C to “2”.
<Remarks>
Install an external protection such as thermal fuse without fail when you
set up SV.Pr6C to 2. Otherwise, regenerative resistor loses the protection
and it may be heated up extremely and may burn out.