Mass acceleration factor

The mass acceleration factor is calculated as follows:

fa	Mass acceleration factor
JLx	Load moment of inertia reduced to the motor shaft	[JLx] = kgm2
JMot	Motor moment of inertia	[JMot] = kgm2

The motor inertia J_Mot is the mass moment of inertia of the motor and, if present, the brake and the flywheel fan (Z fan).

The load moment of inertia J_Lx includes the mass moments of inertia of the driven machine and the gear unit, reduced to the motor shaft.