8. TROUBLESHOOTING
8 - 79
A restoration position deviates
at restoration of power for the
absolute position detection
system.
The motor was rotated
exceeding the maximum
permissible speed at power
failure (6000 r/min) by an
external force during driver
power off.
(Note: The acceleration time is
0.2 s or less.)
Check if the motor was
accelerated suddenly to
6000 r/ min by an external
force.
Extend the acceleration time.
The driver power turned on while
the servo motor was rotated
exceeding 3000 r/min by an
external force.
Check if the driver power
turned on while the servo
motor was rotated exceeding
3000 r/min by an external
force.
Review the power-on timing.
Transfer data to the controller is
incorrect.
Check the ABS data with
setup software (MR
Configurator2
TM
).
Review the controller programs.
Overshoot/undershoot
occurs.
The servo gain is low or too
high.
The response of auto tuning is
low or too high.
Check the velocity waveform
with a graph using setup
software (MR
Configurator2
TM
) if
overshoot/ undershoot is
occurring.
Adjust the response of auto tuning
and execute the gain adjustment
again.
The setting of [Pr. PB06 Load to
[GF]
motor inertia ratio/ load to motor
mass ratio] is incorrect.
Check that the setting value
of [Pr.PB06 Load to motor
inertia ratio/load to motor
mass ratio] and the
actual load moment of
inertia or
load mass are matched.
Capacity shortage or shortage
of the maximum torque (thrust)
due to too large load.
Check the instantaneous
torque using status display if
the maximum torque
(maximum thrust) exceeds
the torque limit value (thrust
limit value).
Reduce the effective load ratio by
increasing acceleration/
deceleration time and reducing load.
The setting of the torque limit is
incorrect.
Check the instantaneous
torque using status display if
the maximum torque
(maximum thrust) exceeds
the torque limit
value (thrust limit value).
Review the torque limit setting.
Backlash of the machine part is
large.
Check if there is a backlash
on the machine part.
Adjust the backlash on the
coupling and machine part.
A communication with driver
fails using setup software (MR
Configurator2
TM
).
(For details, refer to Help of
setup software (MR
Configurator2
TM
).)
The communication setting is
incorrect.
Check the communication
setting such as baud rate
and ports.
Set the communication setting
correctly.
A model is being connected
other than the model set in
model selection.
Check if the model selection
is set correctly.
Set the mode selection correctly.
The driver was not set
correctly.
Check the bottom of the
USB
(Universal Serial Bus)
controller with the device
manager of the personal
computer if "MITSUBISHI
MELSERVO USB Controller"
is being displayed.
Delete an unknown device or
other devices, cycle the power of
the driver, and reset according to
Found New Hardware Wizard.
They are off-line status.
Check if they are off-line.
To Next Page
Loading...
Need help?
General