STO hardware fault (_ecSTO_HARDWARE_FAULT)
ABB · ACS850 Standard Program Firmware
¿Qué significa 10034 ?
This fault signals an internal hardware malfunction within the Safe Torque Off (STO) circuits, indicated by the assertion of one or both internal fault circuit outputs. This is a critical safety-related fault, occurring regardless of whether the drive is enabled or disabled, and means the STO function cannot be relied upon, risking uncontrolled torque.
Causas comunes
- Internal component failure (e.g., relay, semiconductor switch) within the drive's STO safety circuit.
- Over-voltage or transient spike affecting the drive's internal STO power supply, causing a component breakdown.
- Age-related degradation of internal STO components, leading to a deviation from expected performance.
- Manufacturing defect in the drive's STO hardware, causing an unexpected fault assertion.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Cycle power to the drive (power off, wait 30 seconds, power on) to attempt a reset of the internal STO hardware.
- 2
Check the drive's environmental conditions, specifically for excessive heat or humidity that might stress internal components.
- 3
Verify the incoming power supply quality to the drive, looking for over-voltage conditions or excessive transients that could damage internal circuitry.
- 4
If the fault persists after power cycling and environmental checks, contact technical support with the drive's serial number for potential hardware replacement.
- 5
Capture any available diagnostic logs or event recorders from the drive to provide to technical support for detailed analysis of the internal fault.