Omron R88D-KN01L-ECT-L User Manual page 441

Symptom
The motor is overheating.
The machine position is
misaligned.
The motor does not stop or is
hard to stop even if the servo
is turned OFF while the
motor is operating.
The Linear Motor or the load
generates abnormal noise or
vibration.
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
Probable cause
The ambient temperature is
too high.
The heat radiation condition
for the motor is inappropriate.
The motor is overloaded.
The motor vibrates during
operation.
There is an error in the
coupling of the Liner Motor
and the mechanical system.
The host controller gave a
deceleration stop command.
The load mass is too large.
The dynamic brake is
disabled.
Vibration occurs due to
improper mechanical
installation.
Vibration occurs due to low
mechanical rigidity.
Vibration occurs due to
machine resonance.
There is a problem with the
linear guides.
The gain is wrong.
The Speed Feedback Filter
Time Constant 1 (3103 hex)
is wrong.
12 Troubleshooting and Maintenance
Items to check
Check to see if the ambient
temperature around the
motor is over 40°C.
• Check to see if the
specified radiation
conditions are observed.
• For a motor with a brake,
check the load ratio.
Measure the force on the
analog monitor on the front
panel or from the CX-Drive.
Check to see if the coupling
of the Linear Motor and the
machine is misaligned.
Check the control ladder
program in the host
controller.
• Check the load mass.
• Check the motor speed.
• The dynamic brake
resistance is disconnected.
Check if the dynamic brake is
disabled or broken.
Check to see if the Linear
Motor's mounting screws are
loose.
Check the load for
eccentricity.
Check to see if the coupling
with the load is unbalanced.
Check to see if the vibration
frequency is 100 Hz or lower.
Check to see if the
resonance frequency is high
or low.
Check for noise or vibration
around the linear guides.
–
Check the set value of object
3103 hex. Normally set "0."
Measures
• Lower the ambient
temperature around the
motor to 40°C or less. (Use
a fan or air conditioner.)
• Lower the load ratio.
• Improve the radiation
conditions.
• Reduce the load.
• Improve ventilation.
• Decrease the acceleration
and deceleration rates.
• Lower the speed and
check the load.
• Tighten the coupling again.
Review the control in the
host controller.
• Review the load mass.
• Replace the motor and
Servo Drive with proper
ones.
• Enable the dynamic brake,
if it is disabled.
• Replace the brake if it is
broken or if the resistor is
disconnected.
Retighten the mounting
screws.
Eliminate the eccentricity.
Balance the operation.
If the frequency is 100 Hz or
lower, set the correct
damping frequency for the
damping filter to eliminate
the vibration.
If the resonance frequency is
high, set the adaptive filter to
eliminate the resonance.
Alternatively, measure the
resonance frequency and set
Notch Filter 1 and 2.
Check to see if the linear
guides are mounted properly,
and adjust them if necessary.
Check if manual tuning can
achieve proper adjustment.
Return the setting to the
default value of 0.
Alternatively, set a large
value and operate the motor.
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