STOP B initiated

What does C01701 mean?

A STOP B command has been initiated, usually as a consequence of another primary safety-related event like C01706, C01714, or C01716 (or their C307xx equivalents). This action brings the drive to a controlled stop via a defined deceleration ramp.

• A preceding safety-related fault (e.g., C01706 (SAM/SBR limit exceeded), C01714) has commanded the STOP B state.
• An external safety monitoring device or PLC output has initiated a STOP B ramp-down via the drive's safety inputs.
• The drive's internal safety functions have detected a critical deviation, requiring a rapid, controlled deceleration (STOP B).
• Incorrect parameterization of a safety function (e.g., acceleration limits, brake ramp monitoring) leading to an unintended STOP B.

Click steps to track your progress.

1. 1

   1. Identify and resolve the primary safety fault or alarm (e.g., C01706, C01714) that led to the STOP B condition.

2. 2

   2. Examine the status of all relevant safety input signals (e.g., STO, SS1, SDI) on the drive terminals to confirm their state.

3. 3

   3. Review the drive's safety parameters (e.g., p9500 onwards) for any incorrect values that might trigger an unintended STOP B.

4. 4

   4. Check for mechanical issues on the motor or load (e.g., jamming, excessive friction) that could cause actual acceleration/deceleration to exceed limits.

5. 5

   5. Perform a safety reset (e.g., via p9699 or by cycling relevant safety inputs) once the root cause is resolved.