Selecting the MOVIGEAR^® performance drive unit

Observe the following points when selecting the MOVIGEAR^® performance drive unit:

Which torque class (size) is required?

Requirement: The maximum possible starting torque of the MOVIGEAR^® performance drive unit must be higher than the maximum application torque:

The application calculations result in a maximum application torque during startup of M_max = 145 Nm.

MGF..2-..-C drive units with i > 10.37 meet these requirements.

Result: A MOVIGEAR^® performance drive unit of torque class MGF..2 is selected.

Selecting the gear ratio with output speed:

Requirement: The application calculations result in an output speed of n_a = 50 min^-1. To achieve a high setting range and an optimum efficiency, the required output speed should be achieved as precisely as possible at an input speed of n_e = 2000 min^-1.

Result: The drive with a gear ratio of i_tot = 37.24 and an output speed of n_a = 53.7 at n_e= 2000 min^-1 is selected from the tables in the product manual > chapter "Technical data" > Torque characteristics.

MGF..2-..-C
		n_a	n_a	M_a	M_apk			M_a EmergOff	i_tot	Mass
		at n_e= 50 min^-1	at n_e= 2000 min^-1	at n_e= 500 – 2000 min^-1	at n_e= 200 – 1500 min^-1	at n_e= 1750 min^-1	at n_e= 2000 min^-1	M_a EmergOff		Mass
		min^-1	min^-1	Nm	Nm	Nm	Nm	Nm		kg
2- stage		14.8	593.5	14	41	30	22	65	3.37	16
		...	...	...	...	...	...	...	...
		...	...	...	...	...	...	...	...
		...	...	...	...	...	...	...	...
3- stage		1.8	71.3	112	220	220	185	330	28.07		17
		1.5	60.6	132	220	220	218	330	33.02

		1.3	53.7	149	220	220	220	330	37.24

		1.2	47.4	169	220	220	220	330	42.19
		1.1	44.4	180	220	220	220	330	45.03
		1.0	38.8	200	220	220	220	330	51.51
		0.9	36.2	200	220	220	220	330	55.25

Check the setting range and minimum speed

Setting range 5 m/min: 22 m/min ≈ 1:4.4.

The standard control range of 1:50 is thereby sufficient. The option /AZ1Z (multi-turn encoder with MOVILINK^® DDI connection) must not be selected.

n_a at n_e 40 min^-1 = 1.1 min^-1 < n_min = 11.4 min^-1.

Thermal check of the MOVIGEAR^®:

Requirement: To avoid any thermal problems, the effective torque of the application must be less than the continuous output torque of the MOVIGEAR^® drive unit:

Based on the application calculation, the effective torque is M_eff = 45.1 Nm. The continuous output torque of the selected MOVIGEAR^® drive unit amounts to M_a at n_e 2000 min^-1 = 149 Nm.

Take any power-reducing factors into consideration (derating for installation altitude and ambient temperature).

Result: The requirements are met.

Checking the braking resistor

Calculation of the regenerative power when decelerating:

Proceed according to chapter "Regenerative current-carrying capacity of the integrated braking resistor".

MOVIGEAR® performance DSI