Panasonic A4P Series 用户手册

174

Gain adjustment is not proper.

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.

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.
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. 
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.

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

Communication cable (for RS232C)  is 
connected to the connector, CN X3.

Connect the communication cable (for RS232C) to connector, CN X4.

Refer to P.96,  "How to Operate-EEPROM Writing" of Preparation.