Siemens SIRIUS 3RW55 - Page 103

Functions
7.3 Run-down
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
103
Diagram
①
DC braking torque
t
1
Stop command on soft starter
t
1
... t
2
Stopping time
M
e
Rated torque
Requirements
In this braking variant, one output of the soft starter must be changed over to "DC braking",
through which an external braking contactor is controlled.
Parameters
Note
Type of connection
The "DC
braking" stopping function is not possible in inside-delta circuits.
Parameters
Description
Stopping time On expiry of the stopping time, the DC braking is automatically terminated. The
parameter value "0" causes the motor to be switched off immediately without
DC braking.
DC braking torque The motor's braking force can be set with the amount of the DC braking torque.
• Factory setting: 50%
• Setting range: 20 ... 100%
• Increment: 5%