Technical Manual for EA350 Analog Pulse Type Servo Driver V101 : Undervoltage : Overvoltage : Software over-current See for details : Motor overload/driver overload : Driver overheating : The auxiliary supply voltage is too low :
Over-speed 243 Reason for alarm Inspection Handling method Input voltage of the main circuit is lower than the permitted value Check whether the input voltage and wiring of the main circuit are normal Recheck the power wiring No input voltage of the main circuit Check whether the main circuit voltage is normal Recheck the power switch Power error Check whether the power is consistent with the specification Use a proper power source Reason for alarm Inspection Handling method Input voltage of the main circuit exceeds the permitted value Check whether the main circuit voltage falls within the permitted range Use a proper power source Power input error Check whether the power is consistent with the specification Use a proper power source Too fast deceleration of the motor Check if the system inertia is too high and if the deceleration is too fast Prolong the deceleration time, or use an appropriate external braking resistor The load inertia is high and no braking resistor is connected Check whether overvoltage occurs upon stop Install a braking resistor with proper capacity and resistance, and correctly set the braking resistor parameter Driver hardware alarm The main circuit voltage is within the permitted range according to measurement, but this alarm still occurs when the motor is not running Send it to the distributor or manufacturer for repair Reason for alarm Inspection Handling method Continuing use when the rated load is exceeded 1:
Monitor whether d0-01 is constantly above 100% 2: Monitor whether d0-46 is constantly above the rated value 3: Monitor whether d0-47~49 constantly increase 1: Increase the motor capacity or reduce the load 2: Increase the driver capacity or reduce the load The motor encoder is improperly wired Check U, V, W and encoder wiring Correct wiring The motor power cable is cut off or has poor contact 1: Check whether the motor power line and the driver are reliably connected 2: Check whether the motor connector are reliably connected; particularly check the specification of plastic connectors if used 1: Tighten screws and eliminate poor contact, poor cable connection and other problems. 2:
Fix connectors to prevent them shaking or getting stressed under external load. 3: Check reeds in connectors against deformation and make corrections. Improper setting of control parameters 1: Check whether the machine oscillates and whether the motor produces abnormal noise 2: Acceleration/deceleration is set too fast 1: Adjust the position/speed gain 2: Slow down acceleration and deceleration Driver or motor alarm Eliminate the above problems Send it to the distributor or manufacturer for repair Reason for alarm Inspection Handling method Excess environment temperature.
Check whether the ambient temperature falls within the permitted range Improve the installation environment The driver cooling fan is damaged Check if the cooling fan runs during operation Replace the non-operating fan Heat dissipation of the servo driver is affected 1: Check whether the driver is installed in conformity to specified requirements 2: Check whether the radiator of the driver is blocked 1: Install the driver properly according to requirements provided in Chapter II 2: Clear blockage Reason for alarm Inspection Handling method The auxiliary power supply has continuous voltage drop over above 40ms and the drop reaches above 50% 1:
Check whether the auxiliary power supply is properly wired 2: Check if there is sound power supply Improve the power quality. Eliminate poor contact or other wiring abnormalities Reason for alarm Inspection Handling method UVW phase sequence error Check if the UVW phase sequence is correct Wire the terminals according to the correct phase sequence