FAST Simulation fault

hello,
I want to simulate the wind turbine’s SoftOverSpeed case.But when I set the rotor speed to below rated speed ,It make pitch to fine, so it make rotor speed rise to SoftOverSpeed threshold .
But when speed reach to threshold, the simulation end by the error.Like
QQ图片20170908120552.png
Can you give me some advice

Best Regard

Ruiliang.Wang

Dear Ruiliang,

The issues you are having seem to be unique to the turbine and control system you are modeling, which is not a model I’m familiar with. I doubt I can offer any advice.

Best regards,