STO hardware fault (_ecSTO_HARDWARE_FAULT)

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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.

• 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.

Klikk på steg for å spore fremgangen.

1. 1

   Cycle power to the drive (power off, wait 30 seconds, power on) to attempt a reset of the internal STO hardware.

2. 2

   Check the drive's environmental conditions, specifically for excessive heat or humidity that might stress internal components.

3. 3

   Verify the incoming power supply quality to the drive, looking for over-voltage conditions or excessive transients that could damage internal circuitry.

4. 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. 5

   Capture any available diagnostic logs or event recorders from the drive to provide to technical support for detailed analysis of the internal fault.