Panasonic A4P Series Parameter Returns to Previous Setup, Causes Countermeasures Wiring, 174

Troubleshooting

Overshoot/Undershoot		Overheating of the Motor (Motor Burn-Out)
Classification	Causes		Countermeasures
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 P.142
￿	￿		of Adjustment.￿
Installation	Load inertia is large.￿		Check with graphic function of PANATERM® or velocity monitor (SP)
	￿		or torque monitor (IM). 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-		Check the voltage at brake terminals. Apply the power (DC24V) to
	released).￿		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		Check the running pattern, working condition and operating status, and
	dynamic brake has been engaged.		inhibit the operation under the condition of the left.
Parameter Returns to Previous Setup
Classification	Causes		Countermeasures
Parameter No writing to EEPROM has been carried out			Refer to P.96, "How to Operate-EEPROM Writing" of Preparation.

before turning off the power.

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

Classification	Causes	Countermeasures
Wiring	Communication cable (for RS232C) is	Connect the communication cable (for RS232C) to connector, CN X4.
	connected to the connector, CN X3.

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