Protective
function
Error code No.
Causes Measures
Main Sub
6-12
1. When in Trouble
Protective function (Detail of error code)
*
Encoder
initialization
error
protection
*
1
43 0 An error has been detected at
initialization time of serial incremental
encoder.
Replace the motor.
*
Absolute single
turn counter
error protection/
incremental
single turn
counter error
protection
*
1
44 0 Absolute encoder has detected a single
turn counter error.
Serial incremental encoder has detected
an error in the incremental counter value
of single turn counter.
(between z-phase signals)
Replace the motor.
*
Absolute
multi-turn
counter error
protection/
incremental
counter error
protection
*
1
45 0 Absolute encoder has detected a multi-
turn counter error.
Serial incremental encoder has detected
an error in the incremental counter
values between CS signals.
Replace the motor.
• If you use the incremental system
Pr 0.15 "sets the absolute encoder " is set
to 1.
*
Absolute
status error
protection
*
1
47 0 When power is turned on, absolute
encoder has been rotated at the specied
value or above.
Arrange so as the motor does not run at
power-on.
Incremental
encoder Z
phase error
protection
48 0 Missing pulse of Z-phase of serial
incremental encoder has been detected.
Failure of encoder.
Replace the motor.
Incremental
Encoder CS
signal error
protection
49 0 CS signal logic error of serial incremental
encoder has been detected.
Failure of encoder.
Replace the motor.
*
External scale
wiring error
protection
50 0 Communication between the external
scale and the driver has been interrupted
in certain times, and disconnection
detecting function has been triggered.
• Make a wiring connection of the external
scale as per the wiring diagram.
• Correct the miswiring of the connector pins.
*
External
communication
data error
protection
1 Communication error has occurred in
data from the external scale. Mainly data
error due to noise. External scale cables
are connected, but communication date
has some error.
• Secure the power supply for the external
scale of DC5±5 % (4.75 V to 5.25 V)...pay
attention especially when the external scale
cables are long.
• Separate the external scale cable and the
motor cable if they are bound together.
• Connect the shield to FG...refer to wiring
diagram.
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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