Overshoot/Undershoot, Overheating Of The Motor (Motor Burn-Out); Motor Speed Does Not Reach To The Setup/Motor Revolution (Travel) Is Too Large Or Small; Parameter Returns To Previous Setup; Display Of "Communication Port Or Driver Cannot Be Detected" Appears On The Screen While Using The Panaterm - Panasonic minas a4 series Instruction Manual

Troubleshooting
Overshoot/Undershoot
Classification
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.
Motor Speed Does Not Reach to the Setup
Motor Revolutions (Travel) Is Too Large or Small
Classification
Parameter
Velocity command input gain is not cor-
rect.
Adjustment Position loop gain is low.
Division/Multiplication is not proper.

Parameter Returns to Previous Setup

Classification
Parameter No writing to EEPROM has been carried
out before turning off the power.

Display of "Communication port or driver cannot be detected" Appears on the Screen While Using the PANATERM

Classification
Wiring Communication cable (for RS232C) is
connected to the connector, CN X3.
264
Overheating of the Motor (Motor Burn-Out)
Causes
Check with graphic function of PANATERM
torque monitor (IM). Make a correct gain adjustment. Refer to P.226 of
Adjustment.
Check with graphic function of PANATERM
torque monitor (IM). 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.
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 (DC24V) 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.
Causes
Check that the setup of Pr50, speed command input gain, is made so as
to make the setup of 500 makes 3000 r/min.
Set up Pr10, position loop gain to approx. 100.
Set up correct values to Pr48, 1st numerator of electronic gear, 4A,
numerator multiplier of electronic gear and 4B, denominator of electronic
gear. Refer to parameter setup at each mode.
Causes
Refer to P.70, "How to Operate-EEPROM Writing" of Preparation.
Causes
Connect the communication cable (for RS232C) to connector, CN X4.
Measures
® or velocity monitor (SP) or
®
or velocity monitor (SP) or
Measures
Measures
Measures
®
.