SIEMENS
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Siemens MD 50.8 · 2017
Appendix
Lists
List of variables to dimension the drive
8
■
Overview of data to dimension drives
(continued)
Code
Description
Unit
T
A
Acceleration torque of the motor
Nm
T
Bk
Breakdown torque
Nm
T
br
Rated braking torque
Nm
T
DC
Torque for the new duty cycle
Nm
T
rated
Rated motor torque
Nm
T
req
Required torque
Nm
T
SP
Rated backstop torque
Nm
T
St
Relative starting torque
Nm
T
x
Load torque, reduced to motor shaft
Nm
U
Rated voltage
V
v
Travel velocity
m/s
W
Friction energy per braking operation
J
W
tot
Friction energy until the brake lining is
replaced
MJ
W
V
Friction energy until the brake is readjusted
MJ
x
Distance from the shaft shoulder up to the
force application point
mm
Z
Switching frequency
1/h
Z
0
No-load switching frequency, motor without
brake
1/h
Z
A
No-load switching frequency, motor with
brake
1/h
Z
perm
Permissible switching frequency
1/h
amb
Ambient temperature
°C
© Siemens AG 2017