Protective
function
Error code No.
Causes
Measures
Main Sub
6-5
1. When in Trouble
Protective function (Detail of error code)
1
Before Using the Products
2
Preparation
3
Connection
4
Setup
5
Adjustment
6
When in T
rouble
7
Supplement
*
Over-current
protection
14
0
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) Welding of contact of dynamic braking
relay due to frequent servo ON/OFF
operations.
7) Timing of pulse input is same as or
earlier than Servo-ON.
8) Blowout of thermal fuse due to
overheating dynamic brake circuit.
(Only F and G frames)
9) Power Modulef overheat protection
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 servo driver. Do not use
Servo-ON/Servo-OFF as a means of
staring/stopping the operation.
7) Enter the pulses 100 ms or longer after
Servo-ON.
8) Replace the driver.
9)Increase capacity of servo driver and motor.
Set up longer acceleration/deceleration
time.Reduce the load.
*
IPM error
protection
IPM:
Intelligent
Power Module
1
*
Over-heat
protection
15
0
Temperature 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.
*
Encoders
abnormal
Over-heat
protection
1
When encoder overheating prtection
detection is valid by the setting value
of bit 11 Pr6.10,(Invaild initial set value)
The temperature of encoder has
exceeded an encoder overheat abnormal
level.
1) The ambient temperature of
servomotor is high.
2) Overload
1) Improve the ambient temperature of
servomotor and the cooling condition.
2) Increase capacity of servo driver and
motor.Set up longer acceleration/
deceleration time.Reduce the load..
Note
• When protective function marked with
*
in the protective function table is activated, it can-
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.
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