Selecting Motors - Siemens SIMOTICS T-1FW6 Configuration Manual

Configuration
6.2 Configuring workflow
Figure 6-4
6.2.4

Selecting motors

Select a suitable torque motor using the values determined for the peak torque M
torque M
Important points when selecting a motor
• If more than one torque motor is used to generate torque for a specific axis, the values of the
maximum torques M
together.
• Avoid undesirable limiting effects when control loops overshoot by planning a torque
margin: Select a motor with a total maximum torque M
• The rated torque M
duty cycle M
• If certain general conditions (e.g. machining torque or frictional torque) are not known, then
you are advised to include an even higher reserve.
• In addition to the requirements resulting from the duty cycle, mechanical installation
conditions may influence your choice of motor. If required, the same motor torques can be
achieved with a long motor and a lower motor diameter as well as with a short motor and a
higher motor diameter.
• If you want to operate the motor at minimum speed for a longer period of time, select a motor
with an appropriately high rated torque. On this topic, see Chapter "Uneven current load
(Page 103)".
102
Motor torque-time diagram
of the duty cycle.
eff
and rated torques M
MAX
of the motor must be at least as high as the calculated rms torque of the
N
.
eff
of each of the individual motors must be added
N
≳ 1.1 x peak torque M
MAX
Configuration Manual, 09/2022, A5E52220645B AA
and rms
mMAX
.
mMAX
1FW6 Built-in torque motors