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  • TRM $ 3.797,64
  • ICOLCAP $ 21.550,00 +2,64% +$ 555,0
  • Dólar $ 3.743,50 -1,12% -$ 42,45
  • Euro $ 4.396,62 -0,95% -$ 41,81
  • Bolívar US$ 424,609915 +0,9% +US$ 3,787408
  • Peso mexicano US$ 0,468 +0,21% +US$ 0,001
  • Oro US$ 5123,59 +0,73% +US$ 37,12
  • Tasa de usura en Colombia 25,52 %
  • Tasa de interés del Banrep 10,25 %
  • Café US$ 290,65 -0,02% -US$ 0,05
siemens fault 0a7991
siemens fault 0a7991

Siemens Fault 0a7991 -

| Product Series | Model Examples | Applicable Manual Reference | |:---|:---|:---| | | G120, G120C, G120X, G120XA | Siemens G120 manual (A07991) | | SINAMICS V90 | V90 Servo Drive | SINAMICS V90 Operating Instructions | | SINAMICS S120 | S120 Servo Drive | SINAMICS S120 Commissioning Manual | | Other SINAMICS | G110M, G120P, G115D | Various SINAMICS documentation |

[Alarm A07991 Activated] │ ├─► Motor is locked from running normal production speeds ├─► System parameters cannot be permanently written (RAM to ROM) └─► Drive awaits a "Run Command" to begin short tuning sequence

: Visit the Siemens website. They often have support sections where you can search for specific fault codes. Siemens also offers technical support through phone, email, or chat, depending on your region.

fault No 7900: motor locked/ at high speed limit reached - SiePortal siemens fault 0a7991

The Siemens code is not a permanent hardware fault, but rather a warning alarm indicating that the Motor Data Identification (motor tuning) is active. While this is a standard part of the commissioning process for SINAMICS drives like the G120 or G120C, it can be frustrating if it prevents the drive from starting in normal operation. Review of Fault A07991

This multi-stage approach extracts the maximum possible performance from the motor-drive combination but requires careful adherence to safety guidelines as the motor will actually rotate.

: Ensure the motor is mechanically decoupled if you have selected a rotating measurement ( p1900 = 2 ). For a standstill measurement ( p1900 = 1 ), ensure the brakes are safe but the motor can accept short electrical bursts. | Product Series | Model Examples | Applicable

: If you're unable to find information online, reaching out to a local Siemens representative or distributor can be helpful. They can provide guidance specific to your product and region.

If the drive and motor are already commissioned and this alarm only appears sporadically, you can simply disable the function.

As a true alarm , it does not cause a drive trip or require manual acknowledgment; it automatically clears once the identification routine is successfully completed or manually deactivated by setting the relevant parameters to zero. fault No 7900: motor locked/ at high speed

: Ensure the Profinet/Profibus cable is securely plugged in and the PLC is powered on.

Depending on whether you want to perform the calibration or bypass it, choose one of the two main strategies below. Method 1: Execute the Motor Identification Routine

This is an alarm, not a trip fault, meaning the drive is waiting for a command to start the identification process rather than stopping due to an error.

Comprehensive Guide to Siemens SINAMICS Alarm Code A07991 (0A7991)