The following are some common error codes of Yaskawa servo drives and their meanings:
A.00: Absolute value data error. It cannot accept absolute value data or the accepted absolute value data is abnormal.
A.02: Parameter damage. The result of the “sum check” of the user constants is abnormal.
A.04: Incorrect setting of user constants. The set “user constants” exceed the set range.
A.10: Overcurrent. The current of the power transistor is too large.
A.30: Regeneration abnormality detected. There is an error in the inspection of the regeneration circuit.
A.31: Position deviation pulse overflow. The position deviation pulse exceeds the value of the user constant “overflow (Cn-1E)”.
A.40: Abnormality of the main circuit voltage detected. The main circuit voltage is wrong.
A.51: Excessive speed. The rotation speed of the motor exceeds the detection level.
A.71: Ultra-high load. It runs with a significant excess of the rated torque for several seconds to dozens of seconds.
A.72: Ultra-low load. It runs continuously with a load exceeding the rated torque.
A.80: Absolute encoder error. The number of pulses per revolution of the absolute encoder is abnormal.
A.81: Absolute encoder backup error. All three power supplies (+5V, internal capacitor of the battery pack) of the absolute encoder are out of power.
A.82: Absolute encoder sum check error. The result of the “sum check” in the memory of the absolute encoder is abnormal.
A.83: Absolute encoder battery pack error. The voltage of the battery pack of the absolute encoder is abnormal.
A.84: Absolute encoder data error. The received absolute value data is abnormal.
A.85: Absolute encoder overspeed. When the absolute encoder is powered on, the rotation speed reaches above 400r/min.
A.A1: Heat sink overheating. The heat sink of the servo unit is overheated.
A.B1: Command input reading error. The CPU of the servo unit cannot detect the command input.
A.C1: Servo out of control. The servo motor (encoder) is out of control.
A.C2: Encoder phase difference detected. The phases of the three-phase outputs A, B, and C of the encoder are abnormal.
A.C3: Encoder phase A and phase B open circuit. The phase A and phase B of the encoder are open-circuited.
A.C4: Encoder phase C open circuit. The phase C of the encoder is open-circuited.
A.F1: Power line phase loss. One phase of the main power supply is not connected.
A.F3: Instantaneous power failure error. In the alternating current, a power failure occurs for more than one power cycle.
CPF00: Digital operator communication error – 1. After being powered on for 5 seconds, it still cannot communicate with the servo unit.
CPF01: Digital operator communication error – 2. The data communication is not good for 5 consecutive times.
A.99: No error display. It shows the normal operation status.
Post time: Jan-17-2025
