5-17
Display CountermeasuresCause of errorStatus when error
occurs
Error
Motor conduction er-
ror**
Occurs when servo
is ON.
Servomotor power
line is not con-
nected.
Correct the wiring.
Servomotor power
line is wired incor-
rectly or the connec-
tion is defective.
Check the Servomotor
power line and correct
the wiring.
Servomotor power
line is broken or de-
fective, preventing
current from flowing
correctly to the Ser-
vomotor.
Check the conduction
and resistance value, and
replace the power line if it
is defective.
Servomotor is de-
fective.
Replace the Servomotor.
Servo Driver is de-
fective.
Replace the Servo Driver.
Occurs at startup.
(See note.)
Servomotor power
line is not con-
nected.
Correct the wiring.
Servomotor power
line is wired incor-
rectly or the connec-
tion is defective.
Check the Servomotor
power line and correct
the wiring.
Servomotor power
line is broken or de-
fective, preventing
current from flowing
correctly to the Ser-
vomotor.
Check the conduction
and resistance value, and
replace the power line if it
is defective.
Servomotor is de-
fective.
Replace the Servomotor.
Servo Driver is de-
fective.
Replace the Servo Driver.
Occurs during op-
eration.
Attempted to
execute servo ON
(motor current con-
duction) while motor
is being controlled
by the dynamic
brake, such as when
the servo is OFF or
drive prohibit input is
being used.
Check that the servo ON
sequence is correct.
Check that the RUN sig-
nal is correctly input.
When the drive prohibit
input is used, check that
the signal is correctly in-
put.
Parameter Unit
transmission error 1
Occurs when power
supply is turned ON.
Servo Driver is de-
fective.
Replace the Servo Driver.
Parameter Unit
transmission error 2
Occurs when Pa-
rameter Unit is in
Internal element
misoperation
Reset the alarm, then re-
start the operation.
use.
Internal element is
broken
Replace the Servo Driver.
Note When the torque commands are less than 90% or when a torque limit of less than 90% is applied,
A.F6 will occur instead of A.F5.
Troubleshooting Chapter 5
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