Input Switch Open

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This fault indicates that the drive's main input power switch is open, preventing power from reaching the drive. This typically refers to the external disconnect switch or circuit breaker supplying the drive.

• An input switch configured to monitor a condition is open.
• Limit switch or proximity sensor fault (e.g., not activated when expected).
• Wiring error in the input switch circuit.
• Switch mechanism failure.
• External condition preventing switch closure.

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1. 1

   Inspect the main power switch supplying the drive to ensure it is in the closed (ON) position and making proper contact.