Overshoot/Undershoot, Overheating Of The Motor (Motor Burn-Out); Motor Speed Does Not Reach To The Setup; Motor Revolutions (Travel) Is Too Large Or Small - Panasonic MINAS A6 Series Operating Instructions Manual

6
When in Trouble
Classification Causes
Adjustment
Gain adjustment is not proper.
Installation Load inertia is large.
Looseness or slip of the
machine.
Ambient temperature,
environment.
Stall of cooling fan, dirt of fan
ventilation duct.
Mismatching of the driver and
the motor.
Failure of motor bearing.
Electromagnetic brake is kept
engaged (left un-released).
Motor failure (oil, water or
others)
Motor has been turned by
external force while dynamic
brake has been engaged.
6
When in Trouble
Classification Causes
Parameter
Velocity command input gain is
not correct.
Adjustment Position loop gain is low.
Division/Multiplication is not
proper.
Related page
• P.4-6 to P.4-85... "Details of parameter"
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3. Troubleshooting
Overshoot/Undershoot,
Overheating of the Motor (Motor Burn-Out)
Check with graphic function of PANATERM or monitor (connector
X7). Make a correct gain adjustment. Refer to "Adjustment".
Check with graphic function of PANATERM or monitor (Connector
X7). Make an appropriate adjustment. Increase the motor and
driver capacity and lower the inertia ratio. Use a gear reducer.
Review the mounting to the machine.
Lower the temperature with cooling fan if the ambient temperature
exceeds the predications.
Check the cooling fans of the driver and the machine. Replace the
driver fan or request for repair. (The upper fan on the H-frame driver
stops during servo OFF to save energy. This is normal.)
Check the name plates of the driver and the motor. Select a
correct combination of them referring to the instruction manual or
catalogue.
Check that the motor does not generate rumbling noise while
turning it by hand after shutting off the power. Replace the motor
and request for repair if the noise is heard.
Check the voltage at brake terminals. Apply the power (DC24 V) to
release the brake.
Avoid the installation place where the motor is subject to high
temperature, humidity, oil, dust or iron particles.
Check the running pattern, working condition and operating status,
and inhibit the operation under the condition of the left.
3. Troubleshooting

Motor Speed Does Not Reach to the Setup,

Motor Revolutions (Travel) Is Too Large or Small

Check that the setup of Pr3.02, speed command input gain, is
made so as to make the setup of 500 makes 3000 r/min/6 V.
Set up Pr1.00and Pr1.05, position loop gain to approx. 1000.
Set up correct values to Pr0.09, 1st numerator of electronic
gear, Pr0.11, numerator multiplier of electronic gear and Pr0.10,
denominator of electronic gear. Refer to parameter setup at each
mode.
• P.7-26 "Outline of Setup support software "PANATERM"
Measures
Measures
1
2
3
4
5
6
7
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