Panasonic MINAS A6 Series Operating Instructions Manual page 378

1. When in Trouble
Protective function (Detail of error code)
Protective Error code No.
function
Main Sub
Over-load 16
protection
Torque
saturation
anomaly
protection
*
18
Over-
regeneration
load
protection
Note
• When protective function marked with
not be disabled by the alarm clear input (A-CLR). To return to the normal operation, turn off
power, remove the cause, and then turn on power again.
Related page
• P.4-6 to P.4-85... "Details of parameter"
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6-6
Causes
0 Torque command value has exceeded
the over-load level set with Pr5.12
(Setup of over-load 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 (Pr0.04) 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.
• The over-load protection time characteristics are described on P.6-14.
Caution
Once this error occurs, it cannot be cleared at least for 10 sec.
1 Torque saturation has continued for the
time set in Pr6.57 Torque saturation error
protection detect time.
0 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.
Install an external protection such as thermal fuse without fail when
Caution
you set up Pr0.16 to 2. Otherwise, regenerative resistor loses the
protection and it may be heated up extremely and may burn out.
Check that the torque (current) does not
oscillates nor fluctuate up an down very
much on the analog outoput and via
communication. Check the over-load alarm
display and load factor with the analog
outoput and via communication..
1) Increase 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.
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.
• Check operation of the driver.
• Refer to Measures described for Err16.0.
Check the load factor of the regenerative
resistor from the front panel or via communi-
cation.
Do not use in the continuous regenerative
brake application.
1) Check the running pattern (velocity
monitor). Check the load factor of the
regenerative resistor and over-regeneration
warning display. Increase the capacity
of the driver and the motor, and loosen
the deceleration time. Use the external
regenerative resistor.
2) Check the running pattern (speed monitor).
Check the load factor of the regenerative
resistor. Increase the capacity of the driver
and the motor, and loosen the deceleration
time. Lower the motor rotational speed.
Use an external regenerative resistor.
3) Set up Pr0.16 to 2.
*
in the protective function table is activated, it can-
Measures