Safety stop

What does SA mean?

This alarm appears when the safety stop function is activated, resulting in the shutoff of the inverter's output. It signifies a protective measure triggered by an emergency stop device or a disconnection within the safety circuit.

• External emergency stop button activated, interrupting safety input circuit.
• Safety relay tripped due to activation of a safety device (e.g., light curtain, gate switch).
• Safety input parameter (e.g., P3-01 to P3-08) misconfigured or receiving an unexpected signal.
• Wiring fault in the safety chain, causing a break in the safety loop.

Click steps to track your progress.

1. 1

   Verify the state of the external emergency stop device or safety relay contacts (e.g., measure voltage at input terminal STOA/STOB).

2. 2

   Inspect all safety chain devices (e.g., light curtains, door interlocks) for activation or damage.

3. 3

   Check inverter safety input parameter settings (e.g., P3-01 to P3-08) for correct configuration (e.g., Normally Closed, Normally Open).

4. 4

   Reset the safety circuit externally after resolving the trigger condition, then attempt to reset the inverter fault.

5. 5

   Measure continuity across safety input terminals to ensure proper closure or opening as expected by the safety circuit design.