Drive: Incorrect control parameter
Siemens · SINUMERIK 828D
What does 207080 mean?
The closed-loop control parameters of the drive have been incorrectly parameterized, for example, parameter p0356 (L_spread) is set to 0. The fault value (r0949) includes the specific parameter number that is involved. This fault does not cause an immediate reaction but requires a POWER ON acknowledgement after correction.
Common Causes
- Manual entry error during parameterization, setting a critical control parameter (e.g., P0356, P0358, P0360) to an invalid or out-of-range value.
- Incomplete or incorrect motor data identification (e.g., P0300 to P0307) preventing proper calculation of control loop gains.
- Loading an incompatible parameter set from a different drive type or older firmware version, corrupting control-specific values.
- Drive software or firmware bug causing default parameter values to be incorrect or not applied during initialization.
- Using default values for specialized applications requiring specific tuning (e.g., high inertia loads, direct drive systems), leading to unstable control.
Repair Steps & Checklist
Click steps to track your progress.
- 1
1. Identify the specific parameter indicated by r0949 and verify its current setting against the recommended value in the drive manual or commissioning guide.
- 2
2. Perform a factory reset (e.g., P0010 = 30, P0970 = 1) and re-enter essential motor and application data, then re-commission the drive.
- 3
3. Load a known good parameter set for this specific machine and drive configuration from a backup file (e.g., using STARTER or Startdrive software).
- 4
4. Re-run the motor identification and optimization routine (e.g., P1910 = 1 for automatic tuning) to recalculate control loop parameters.
- 5
5. Check for and install any available firmware updates for the drive unit, then re-commission the drive if necessary.