Emergency stop

What does 6 mean?

An emergency stop signal has been received from an option board, causing the drive to immediately halt operation. This is a critical safety interlock feature. The drive will remain stopped and will not accept new run commands until the emergency stop condition is cleared and the integrity of the safety circuit is verified.

• Activation of an external emergency stop button or safety relay connected to the drive's safety input (e.g., terminal S1, safety chain input).
• Failure of a safety-related component or interlock in the safety circuit (e.g., light curtain, gate switch) connected to the option board.
• Faulty wiring or loose connection to the drive's safety input terminals, causing an intermittent or false emergency stop signal.
• Malfunction of the option board itself, erroneously reporting an emergency stop condition.
• Incorrect programming of the safety function or safety input parameters (e.g., P3-01 configured for normally closed, but wired normally open).

Click steps to track your progress.

1. 1

   Verify the state of all external emergency stop buttons and safety interlocks (e.g., door switches) in the machine, ensuring none are active.

2. 2

   Measure the voltage/continuity at the drive's safety input terminals (e.g., S1, S2, STO) against the drive's safety common, confirming the correct state (e.g., 24VDC present).

3. 3

   Inspect the wiring from the external safety circuit to the drive's safety input terminals for damage, loose connections, or incorrect termination.

4. 4

   Check the drive's safety configuration parameters (e.g., P3-01, P3-02 for Safe Torque Off) to ensure they match the physical wiring and intended safety logic.

5. 5

   Temporarily bypass external safety inputs (if permissible and safe for testing, following Lockout/Tagout procedures) to isolate if the fault is external or internal to the drive.