Characteristic values for accuracy of torque and speed

	ASM in VFC^PLUS without encoder		ASM in VFC^PLUS with encoder
	Without motor temperature probe	With motor temperature probe	Without motor temperature probe	With motor temperature probe
Inaccuracy of the calculated torque	As a general rule: the more accurate the motor parameters, the more accurate the torque. For greater torque accuracy, measure the motor parameters with FCB 25.
With FCB 25	< 5% M_N
Typical deviation	< 10% M_N
Maximum deviationIf n is permanently < 20% of the nominal speed.	< 15% M_N		< 25% M_N	< 15% M_N

	ASM in CFC		PMSM in CFC and ELSM^®	RSM in VFC^PLUS
	Without temperature sensor	With temperature sensor	Without motor temperature probe	With motor temperature probe
Inaccuracy of the calculated torqueSteady-state inaccuracy is the deviation of the mean actual value from the setpoint.	As a general rule: the more accurate the motor parameters, the more accurate the torque. For greater torque accuracy, measure the motor parameters with FCB 25.
With FCB 25	< 5% M_N
Typical deviation	< 10% M_N
Maximum deviationIf n is permanently < 20% of the nominal speed.	< 15% M_N		< 25% M_N	< 15% M_N

	ASM in VFC^PLUS without encoder	RSM in VFC^PLUS without encoder	PMSM in ELSM^®	All control modes with encoder
Inaccuracy of the calculated rotational speedSteady-state inaccuracy is the deviation of the mean actual value from the setpoint.	Typical deviation depending on the accuracy of the motor parameters: 0.2 × f_{slip_nom}.	Typical deviation depending on the accuracy of the motor parameters, therefore no general statement possible: 1% n_N	Typical deviation in closed-loop operation (n > 2% n_N): 10^-4 min^-1	Maximum deviation: Max(0,007% n_set, 10^-4 min^-1)