Device Functions
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 06
6-15
Stopping time The stopping time determines how long the braking torque should be applied to
the motor. The braking time should be long enough to bring the load to a
complete standstill.
To achieve a sufficient braking effect until standstill, the load's mass moment of
inertia should not be higher than 5 times the motor's mass moment of inertia.
(J
load
5xJ
motor
).
The soft starter has no standstill recognition; if required, this must be
accomplished using external measures.
Figure 6-9: DC braking
Typical applications for DC braking
Use "DC braking" in lathes (e.g. for tool changeover) and circular saws.
Motor
torque (M)
M
Nominal
DC braking torque
Motor braking
torque
Stop command
at soft starter
Stopping time
Time
s
operation
To Next Page
Loading...
