DRV10983EVM: Rotation speed value on GUI shows too high

Hello experts,

I have question about DER10983EVM.

My customer tries to drive the motor with DRV10983EVM.

Motor specs

　・DC12V

　・12 poles, 3phases, brush less, sensor less

　・No load rotation speed 10800rpm

　・No lead current 250mA

　・Kt(Torque constant) 0.0062Nm/A

　・Terminal Resistance 1.82Ohm (Common-each coil)

　・Inductance 1.0mH

・Setting value

　・R(phase-CT) 1.85Ohm

　・BEMF Constant (Kt) 11mV/Hz

The motor looks rotate in normal, but rotation speed on GUI shows over 100k rpm. 

Also, the customer set I2C speed = 1, the motor looks rotate in normal, and motor drive current is about 0.06A.

But motor has much thermal with increasing speed value on GUI.

Could you tell me advise to solve this problem?

What should I check first?

Thanks and best regards,

Ryo Akashi