Error f11 manroland r702

Hello everyone
An error f11 on simoreg 6RA2275 which is related to a tachometer
We have replaced the tacho with a new one and still the same after Running the machine it stopped and shows f11
We even changed parameters l33 related to the error
what else could be the problem ?
Thank you .

 

Hi! The F11 error on your SIMOREG 6RA2275 suggests issues with the tachometer circuit, such as incorrect wiring, polarity, or unstable output. Double-check the wiring and polarity. Verify the tachometer output at various RPMs using a multimeter to ensure it’s consistent and meets specifications, like 20V at 1000 RPM for DC units. Inspect the mechanical coupling for alignment issues and ensure the CNC controller's signals properly match the drive states. If the issue persists, it might require advanced diagnostics or parameter tuning to resolve

 

The tacho is new and the wiring is good so is the polariy and the voltage
I started to think its in the drive electonics or parameters
Im not sure yet .