The case where the sign of the Present PWM is opposite to that of the Present Current

Hello,

I am currently using the MANIPULATOR-X.
While observing one of the motors(XM430-W350-T) during operation, I noticed that the sign of the Present PWM value and the sign of the Present Current value are sometimes opposite.

Is this due to back EMF? Or is there another reason?

Also, I would appreciate it if you could let me know which company’s motor is used in the XM430-W350-T product, and what specific model it is.