Mitsubishi Electric MELSERVO MR-J4-B-RJ Series, Инструкция по эксплуатации

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1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
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Description Possible cause Check result Action Target
The rotation accuracy is low.
(The speed is unstable.) The servo gain is low. Or the
response of auto tuning is
low. Check if the trouble is solved
by increasing auto tuning
response ([Pr. PA09]). Adjust gains. [A]
[B]
[WB]
[RJ010]
[GF]
The torque is insufficient due
to large load. Check instantaneous torque
using status display (only [A])
or MR Configurator2 if the
load exceeds the maximum
torque or torque limit value. Reduce the load or use a
larger capacity servo motor.
An unintended torque limit
has been enabled. Check if TLC (Limiting
torque) is on using status
display or MR Configurator2. Cancel the torque limit.
The setting of the torque limit
is incorrect. Check if the limiting torque is
too low.
[A]: [Pr. PA11] and [Pr.
PA12], or analog input
[B] [WB] [RJ010]: Setting on
controller side
[GF]: [Pr. PA11], [Pr. PA12],
or setting on controller side Set it correctly.
For a servo motor with an
electromagnetic brake, the
brake has not released. Check the power supply of
the electromagnetic brake. Turn on the electromagnetic
brake power.
The command from the
controller is unstable. Check the ripple of the
command frequency with MR
Configurator2. Review the command from
the controller. Check the
cable for command if there is
failure such as
disconnection.
The machine vibrates
unsteadily when it stops. The servo gain is low. Or the
response of auto tuning is
low. Check if the trouble is solved
by increasing auto tuning
response ([Pr. PA09]). Adjust gains. [A]
[B]
[WB]
[RJ010]
[GF]
The servo motor starts to
drive immediately after
power on of the servo
amplifier.
The servo motor starts to
drive immediately after
servo-on. SON (Servo-on) is on at
power on. Check if SON (Servo-on) and
RD (Ready) are on using
status display or MR
Configurator2. Review the sequence of
SON (Servo-on). [A]
An analog signal is inputted
from the beginning. Check the status of analog
speed command and analog
torque command using
status display or MR
Configurator2. Review the timing of
inputting analog signals.
Zero point of an analog
signal deviates. Check if the servo motor
drives while 0 V is inputted to
the analog signal. Execute the VC automatic
offset or adjust offset of the
analog signal with [Pr. PC37]
or [Pr. PC38].
For a servo motor with an
electromagnetic brake, the
brake release timing is not
correct. Check the brake release
timing. Review the brake release
timing. [A]
[B]
[WB]
[RJ010]
[GF]
The connection of the servo
motor is incorrect. Check the wiring of U/V/W. Connect it correctly.