Siemens TV Converter Box 611 User Manual

Configuring the motor

5.1 Procedure

no longer purely sinusoidal. As a result, the torque generated by the motor is no longer

uniform but instead has a ripple. The extent to which the maximum speed can be

overridden depends on the permissible following error and positioning error in the

controller as well as the motor type.

● Motor with different winding

Several winding variants are available for some motor sizes. Windings with lower

inductance allow higher speeds with the same motor size and maximum torque. One

drawback here, however, is the higher motor current.

● Larger motor type

If the first two solutions are not feasible, a motor with a higher peak torque must be used

to ensure that sufficient torque reserves are available for the required torque M

in the

upper speed range (see figure below).

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Figure 5-6

Motor torque-speed diagram with the required operating point M

5.1.8

More than one torque motor on one axes

If the torque motors on the same axes are operated on separate drive systems with separate

angular position measuring systems, the rotation-angle-related alignment of the individual

stators with respect to each other and the individual rotors with respect to each other is

irrelevant.

Electrical parallel connection

If the motors are operated on the same drive system (electrical parallel connection), the

individual rotors must be precisely aligned with each other when they are mounted on the

axes. The individual stators must also be precisely aligned with each other when they are

installed (see "Parallel operation of more than one motor").

5.1.9

Checking the moments of inertia

Once a suitable motor has been selected, the moment of inertia of the rotating mass on the

axis has been determined. This value can be used to check the assumptions made

regarding the duty cycle.

1FW6 Built-in torque motors
Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7