Panasonic MINAS A5-series, Operating Instructions Manual

Page: 295 / 394

6-23
1
Before
Using
the
Products
2
Preparation
3
Connection
4
Setup
5
Adjustment
6
When
in
Trouble
7
Supplement
6
3. Troubleshooting
When in Trouble
Overshoot/Undershoot,
Overheating of the Motor (Motor Burn-Out)
Classification Causes Measures
Adjustment Gain adjustment is not proper. Check with graphic function of PANATERM or velocity monitor (SP)
or torque monitor (IM). Make a correct gain adjustment. Refer to
“Adjustment”.
Installation Load inertia is large. 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.
Looseness or slip of the
machine.
Review the mounting to the machine.
Ambient temperature,
environment.
Lower the temperature with cooling fan if the ambient temperature
exceeds the predications.
Stall of cooling fan, dirt of fan
ventilation duct.
Check the cooling fans of the driver and the machine. Replace the
driver fan or request for repair.
Mismatching of the driver and
the motor.
Check the name plates of the driver and the motor. Select a
correct combination of them referring to the instruction manual or
catalogue.
Failure of motor bearing. 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.
Electromagnetic brake is kept
engaged (left un-released).
Check the voltage at brake terminals. Apply the power (DC24V) to
release the brake.
Motor failure (oil, water or
others)
Avoid the installation place where the motor is subject to high
temperature, humidity, oil, dust or iron particles.
Motor has been turned by
external force while dynamic
brake has been engaged.
Check the running pattern, working condition and operating status,
and inhibit the operation under the condition of the left.
6
3. Troubleshooting
When in Trouble
Motor Speed Does Not Reach to the Setup,
Motor Revolutions (Travel) Is Too Large or Small
Classification Causes Measures
Parameter Velocity command input gain is
not correct.
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.
Adjustment Position loop gain is low. Set up Pr1.00and Pr1.05, position loop gain to approx. 1000.
Division/Multiplication is not
proper.
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.
Related page
• P.4-4 “Details of parameter” • P.7-26 “Outline of Setup support software “PANATERM”