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CPF18

Control Circuit Error

Yaskawa · GA500 Maintenance and Troubleshooting

¿Qué significa CPF18 ?

This code indicates a generic hardware problem within the drive's control circuit. This suggests an internal malfunction that could prevent safe and reliable operation and may require internal component inspection or replacement.

Causas comunes

  • Failure of the safety circuit monitoring logic on the control board (e.g., STO - Safe Torque Off path verification).
  • Internal discrepancy between redundant safety channels (if implemented) detected by the control circuit.
  • Corrupted safety-related parameters (e.g., P10-01 STO Status, P10-02 Safety Function Configuration) leading to misinterpretation of safety states.
  • Component damage (e.g., safety relay drivers, monitoring ICs) within the control board's safety-critical sections.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Document all safety-related parameters (e.g., P10-01, P10-02) and general operating parameters (P1-01, P2-01) from the drive.

  2. 2

    Perform a full power down of the drive by removing incoming AC power (L1, L2, L3) and control power (e.g., 24VDC) for 10 minutes.

  3. 3

    Verify all external safety circuit wiring (e.g., emergency stop, guard interlocks) connected to the drive's safety terminals (e.g., Safe Input 1, Safe Input 2) is correct and uncompromised.

  4. 4

    Visually inspect the control board for any signs of physical damage, particularly in areas associated with safety inputs and internal safety relays.

  5. 5

    If the drive has a removable safety module, remove it, clean contacts with electrical cleaner, and reinsert it firmly.

  6. 6

    Attempt to reset the safety function (often through a specific parameter, e.g., P10-03 Safety Reset) or perform a factory parameter reset (P9-02) as a last resort.

Ver todos los códigos en este manual (60)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Yaskawa GA500 Maintenance and Troubleshooting