Panasonic MINAS A6 Multi Series Technical Reference page 191

7.2Details of protective function
Error No.
Protective function
Main Sub
13 0 DC busundervoltage
protection
1 Main power supply
undervoltage protection
(AC)
14 0 Over-current protection
(To be continued)
7-7
Causes
(When bit 0 of Pr5.08 "L/V trip selection
upon main power off" of the driver module, if
any axis of the driver module is servo-on,
the bus bar (main power) voltage is
insufficient voltage level In the driver
module or power module. It was detected
that it decreased to the following.
1) Instantaneous power failure has
occurred.
2) Lack of power capacity...Power supply
voltage has fallen down due to inrush
current at the main power-on.
3) Failure of driver module (failure of the
circuit)
4) Power supply module failed (circuit
failure).
5) Contact failure in bus bar
On the servo-on axis of the driver module,
the power supply module detected the main
power AC400V input shut-off status for the
time set in PSM Pr.02 "Main power off
detection time".
1) Instantaneous power failure has
occurred.
2) Failure of driver module (failure of the
circuit)
3) Power supply module failed (circuit
failure).
The current flowing through the converter
part of each axis of the driver module
exceeded the specified value.
1) Failure of driver module (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) Welding of relay contact for dynamic
braking due to frequent servo ON/OFF
operations.
7) Timing of command input is same as or
earlier than Servo-ON.
Measures
Measure the applied voltage of main power
connector X102.
Check if the voltage is insufficient.
1) Change to the main power supply
2) Increase the power capacity. For the
capacity, refer to Reference
specification SX-DSV03451 "Driver
and List of Applicable Peripheral
Equipments" of Preparation.
3) Replace the driver module.
4) Replace the power supply module.
5) Check the connection of bus bar.
Measure the applied voltage of main power
connector X102.
Check if there is an instantaneous power
outage or phase loss.
1) Set up the longer time to PSM Pr.02
(Main power off detecting time). Set up
each phase of the power correctly.
2) Replace the driver module.
3) Replace the power supply module.
Remove the cause of overcurrent.
1) Turn to Servo-ON, while disconnecting
the motor. If error occurs immediately,
replace with a new driver module.
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 module. Do not use
servo ON/OFF during operation.
7) Enter the commands 100 ms or longer
after Servo-ON.