Motor Selection; Selection Procedure; A.3 Motor Selection - Siemens SINAMICS V90 Operating Instructions Manual

Appendix

A.3 Motor selection

A.3

Motor selection

A.3.1

Selection procedure

1. Determine the mechanism type as well as the detailed data of the related mechanical
parts, such as ball screw lead, diameter, lead, and gear diameter. Three mechanism
types are shown below:
2. Determine the operation pattern including such parameters as acceleration time (t
constant motion time (t
travel distance (L).
3. Calculate load inertia and inertia ratio.
The inertia ratio can be obtained by dividing the load inertia by the rotor inertia of the
selected motor. The unit of inertia is x 10
4. Calculate the speed.
Calculate the speed according to the travel distance, acceleration time, deceleration time,
and constant motion time.
356
Belt transmission
), deceleration time (t
u
Ball screw
), stopping time (t
d
kg·m .
-4 2
Operating Instructions, 09/2016, A5E36037884-002
Rack and pinion and/or gear
),
a
), cycle time (t ), and
s c
SINAMICS V90, SIMOTICS S-1FL6