174TroubleshootingGain 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 whiledynamic 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.142of Adjustment. Check with graphic function of PANATERM ® or velocity monitor (SP)or torque monitor (IM). Make an appropriate adjustment. Increase themotor 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 temperatureexceeds the predications. Check the cooling fans of the driver and the machine. Replace thedriver fan or request for repair. Check the name plates of the driver and the motor. Select a correctcombination of them referring to the instruction manual or catalogue. Check that the motor does not generate rumbling noise while turning itby hand after shutting off the power. Replace the motor and request forrepair if the noise is heard. Check the voltage at brake terminals. Apply the power (DC24V) torelease the brake. Avoid the installation place where the motor is subject to hightemperature, humidity, oil, dust or iron particles. Check the running pattern, working condition and operating status, andinhibit the operation under the condition of the left.Adjustment InstallationClassification Causes CountermeasuresNo writing to EEPROM has been carried outbefore turning off the power.ParameterCommunication cable (for RS232C) isconnected to the connector, CN X3.Connect the communication cable (for RS232C) to connector, CN X4.WiringClassification Causes CountermeasuresClassification Causes CountermeasuresRefer to P.96, "How to Operate-EEPROM Writing" of Preparation.Overshoot/Undershoot Overheating of the Motor (Motor Burn-Out)Parameter Returns to Previous SetupDisplay of "Communication port or driver cannot be detected" Appears on the Screen While Using the PANATERM® .
