Panasonic minas a series Operating Manual page 67

Protective Functions
Alarm
Protection
Code No.
14
The current flowing in the converter is larger
*Overcurrent
than the specified value.
error
1) The driver failed (due to defective circuits
or IGBT parts).
2) Motor wires (U, V and W) are shorted.
3) Motor wires (U, V and W) are grounded.
4) Motor burned
5) Poor connection of Motor wires
6) The relay for the dynamic brake is melted
and stuck due to the fre quent Servo-ON/
OFF.
7) The motor is not compatible with the
driver.
* Overheat
15
The radiator is heated up to exceed the limit
error
temperature. The power elements of the
driver is overheated.
Overload.
Cause
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Countermeasures
1) Disconnect the motor wires, and enter
Servo-ON. If this trouble hap-pens im-
mediately, replace the driver with a new
one (that is working correctly).
2) Check if the U. V and W wires are
shorted at the connections. Recon nect
them, if necessary.
3) Measure the insulation resistance be-
tween U/V/W and earth wire. If the re-
sistance is not correct, replace the mo-
tor with a new one.
4) Measure the resistance between U,V and
W. If they are unbalanced, replace the
motor with a new one.
5) Check if the U/V/W connector pins are
firmly secured with screws. Loosened
pins should be fixed firmly.
6) Replace the driver with a new one. Do
not start or stop the motor by entering
Servo-ON or OFF.
7) Check the capacity of the motor and
driver on the nameplate. If the motor is
not compatible with the driver, replace it
with a correct one.
Check the ambient temperature and cool-
ing conditions. Check the load rate. Make
the environment under
which the driver operates. Reduce the load.