Er.430 - Control Power Undervoltage

Fault Code Description: Er.430 indicates that there is low voltage in the control power of the servo drive. This error is typically caused by loose connections in the control power cables, momentary power interruptions, or an inadequate power supply. If the control power is unstable, the servo drive may not function properly.

Causes:

    Control power supply is unstable or interrupted:
- The control power supply may have been momentarily interrupted or may not be providing sufficient power.

    Control power cables have poor contact:
- The control cables may be loosely connected or have contact issues.

    Servo drive malfunction:
- A hardware issue within the servo drive could present itself as a low voltage error.

Troubleshooting and Solutions:

    Control power supply is unstable or interrupted:
- Troubleshooting Method: Measure the voltage between L1C and L2C terminals. Check if the power supply is stable. For 220 VAC drives, verify that the input voltage is between 198-264 V; for 380 VAC drives, check that the input voltage is between 342-528 V.
- Solution: Restart the power supply and ensure the voltage is stable. If the power supply is inadequate, increase its capacity.

    Control power cables have poor contact:
- Troubleshooting Method: Check that the control cables are properly connected and that the voltage is within the specified range.
- Solution: Reconnect the cables or replace them if necessary.

    Servo drive malfunction:
- Troubleshooting Method: Restart the servo drive. If the error persists, the servo drive may be faulty.
- Solution: Replace the servo drive.

Summary:
Er.430 occurs when the control power is operating at a low voltage. To resolve this error, check the control power connections, ensure the power supply is stable, increase capacity if necessary, and replace the servo drive if the problem persists.

Er.500 - Overspeed

Fault Code Description: Er.500 indicates that the actual speed of the servo motor has exceeded the overspeed limit. This error is often caused by incorrect phase sequencing, faulty speed settings, or incorrect input references.

Causes:

    Incorrect UVW phase sequence:
- The UVW phase sequence of the servo drive may be inconsistent with the motor’s phase sequence.

    Incorrect H0A-08 setting:
- The overspeed limit may be set lower than the motor's maximum speed.

    Input reference exceeds overspeed limit:
- The input reference corresponding to the motor speed may exceed the overspeed limit.

    Motor is overspeeding:
- The motor may be accelerating excessively due to feedback errors.

    Servo drive malfunction:
- A hardware fault in the servo drive could cause the overspeed error.

Troubleshooting and Solutions:

    Incorrect UVW phase sequence:
- Troubleshooting Method: Check if the UVW phase sequence of the servo drive matches the motor’s.
- Solution: Reconnect the UVW cables according to the correct phase sequence.

    Incorrect H0A-08 setting:
- Troubleshooting Method: Check the H0A-08 parameter. Is the overspeed limit set to 120% of the motor's maximum speed?
- Solution: Adjust the overspeed limit according to the mechanical requirements.

    Input reference exceeds overspeed limit:
- Troubleshooting Method: Check the input reference corresponding to the motor speed. Does it exceed the overspeed limit?
- Solution: In position control mode, if using a pulse as the reference source, reduce the pulse frequency or lower the electronic gear ratio. In speed control mode, check the speed reference and speed limits (H06-06 to H06-09) to ensure they are below the overspeed limit. In torque control mode, adjust the speed limit.

    Motor is overspeeding:
- Troubleshooting Method: Use the servo drive feedback software to check if the speed feedback exceeds the overspeed limit.
- Solution: Adjust the speed gain or optimize the mechanical conditions.

    Servo drive malfunction:
- Troubleshooting Method: Restart the servo drive multiple times. If the error persists, the servo drive may be faulty.
- Solution: Replace the servo drive.

Summary:
Er.500 occurs when the servo motor exceeds the overspeed limit. To resolve this, check the UVW phase sequence, adjust speed settings, review input references and speed limits, and replace the servo drive if necessary.

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