Technical Manual for EA350 Analog Pulse Type Servo Driver V101 : Load inertia identification fails : The electronic gear ratio range is set improperly : The input pulse frequency is too high : Analog zero-drift correction error : The relay fails to fully close : The number of serial encoder lines is improperly set : An error occurs upon writing to the encoder EEPROM : A check error occurs upon reading the encoder EEPROM : Excessive fully closed-loop position deviation :
Disconnection of fully closed-loop external encoder 247 Reason for alarm Inspection Handling method The load inertia is too high Check whether the load inertia is too high Manage to reduce the load inertia or replace with a motor with higher inertia The mechanical connection between the load and the motor is abnormal Check whether the load and the motor is properly connected Eliminate mechanical problems The number of revolutions for the motor is too small Check whether revolutions of the motor is greater than the set value of P8-03 Properly increase the set value of the tens and hundreds places of P8-03 Properly increase the set value of P8-02 Properly decrease the set value of the thousands and hundreds places of P8-03 The set value of the tens and ones places of P8-03 is too small Check whether the motor can rotate for more revolutions Reason for alarm Inspection Handling method The electronic gear ratio is set improperly Check whether relevant parameter of the electronic gear ratio is properly set Adjust the parameter Reason for alarm Inspection Handling method The input pulse frequency exceeds 1MHz Whether the input pulse frequency is too high.
Whether serious interference is present Adjust the output of the master. Use conforming shielded twisted pairs to transmit pulse signals Reason for alarm Inspection Handling method Upon self-learning of zero drift, above 2V external voltage is sampled Check whether the master command is set to 0 during execution of zero drift self-learning. Check if the output voltage exceeds 2V when the master command is set to 0. Set the master command to 0, and repeat zero drift self- learning. Correct the output of the master.
Reason for alarm Inspection Handling method The soft start relay of the servo main circuit fails to fully close Check whether the alarm is cleared after power-on again Send it to the distributor or manufacturer for repair Reason for alarm Inspection Handling method An incorrect number of encoder lines is set by the customer Check relevant parameters Set it correctly. The number of lines is one fourth of the set number of encoder lines Reason for alarm Inspection Handling method An error occurs when a parameter is written to the motor encoder 1: Check whether the communication protocol of the encoder conforms to the requirement. 2:
Check whether the encoder cables are correct and properly connected. Repeat the write operation Reason for alarm Inspection Handling method The parameter check read from the motor encoder is incorrect, or such parameter has not been written to the encoder 1: Check whether the encoder cables are correct and properly connected. Repeat the read operation; if it fails, use the motor CODE Reason for alarm Inspection Handling method The absolute value of fully closed- loop position deviation is greater than PC-04 setting 1: Whether the threshold setting is too small for excessive fully closed-loop position deviation 2:
If the connector is disengaged, or if other mechanisms are subject to connection issues 3: Whether the parameter of PC-01 is correct. 1: Increase the threshold of excessive fully closed-loop position deviation 2: Check if the connector is disengaged from the mechanisms 3: Select the correct movement direction Reason for alarm Inspection Handling method Connector of external encoder is disengaged Check the terminals of interface cards and connectors of the external encoder Reinstallation External encoder wiring error Check if the external encoder is wired following the recommended route in the instructions Correct wiring