STOP A initiated
Siemens · SINAMICS G120
What does C01700 mean?
A STOP A command has been initiated, typically as a consequence of another primary safety-related event such as C01701, C01706, C01714, or C01716 (or their C307xx equivalents). This action results in an uncontrolled stop by immediately removing power from the motor.
Common Causes
- A preceding safety-related fault (e.g., C01701 (STOP B), C01706 (SAM/SBR limit exceeded)) has triggered the STOP A state.
- An external safety relay or PLC output has commanded a STOP A state through the drive's safety inputs.
- Internal safety logic within the drive detected an unsafe condition requiring a controlled ramp-down (STOP A) of the motor.
- A safety monitoring function (e.g., Safe Torque Off STO) has transitioned from an active state to a fault state, cascading to STOP A.
Repair Steps & Checklist
Click steps to track your progress.
- 1
1. Identify and resolve the primary safety fault or alarm (e.g., C01701, C01706) that triggered the STOP A.
- 2
2. Verify the status of all safety input signals to the drive (e.g., STO, SS1, SBC) to ensure they are not active or faulted.
- 3
3. Check the safety status parameters (e.g., r9756, r9757) in the drive for additional diagnostic information regarding the cause.
- 4
4. Ensure that the drive's safety configuration (e.g., p9500 onwards) is correct and matches the application's safety requirements.
- 5
5. Perform a safety reset (e.g., through p9699 or cycling specific safety inputs) after the root cause is addressed.