Configuration
5.2 Configuring workflow
1FW3 complete torque motors
96
Configuration Manual, 08/2020, A5E46027705B AA
The objective is to identify characteristic torque and speed operating points, which can be
used as a basis for selecting the motor depending on the load.
Once the operating scenario has been defined and specified, the maximum motor torque is
calculated. Generally, the maximum motor torque is required when accelerating. The load
torque and the torque required to accelerate the motor are added.
The maximum motor torque is then verified using the motor limiting curves.
The following criteria must be taken into account when the motor is selected:
●
The dynamic limits must be observed, that is, all speed-torque points of the load must lie
below the relevant limiting curve.
●
The thermal limits must be observed, that is, in the case of synchronous motors, the RMS
motor torque at the medium motor speed resulting from the load duty cycle must lie below
the S1 curve (continuous duty).
●
In the case of synchronous motors, note that the maximum permissible motor torque is
reduced at higher speeds as a result of the voltage limiting curve. A clearance of 10%
from the voltage limiting characteristic should also be observed to safeguard against
voltage fluctuations.
Summary of Contents for SIMOTICS T-1FW3
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