F7599 fault in siemens sinamics V90 drive

F7599 fault in siemens sinamics V90 drive indicates Encoder 1 Adjustment is not possible. This means the scaling factor applied to the absolute encoder creates a maximum position value that overflows the drive's 32-bit limit.

 Cause:
The maximum encoder value times the factor to convert the absolute position from increments to length units (LU) has exceeded the value range (-2147483648 ... 2147483647) for displaying the position actual value.

Remedy:
If the value for the maximum possible absolute position (LU) is greater than 4294967296, then it is not possible to make an adjustment due to an overflow.
For rotary encoders, the maximum possible absolute position (LU) is calculated as follows:
Motor encoder without position tracking:
  • IPOS: p29247 * p29248 * 4096 / p29249 for multiturn encoders
  • PTI: 1048576 * p29012[X] * 4096 / p29013 for multiturn encoders

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