Siemens SIRIUS 3RW55 - Alternative Stopping

Functions
7.3 Run-down
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
107
7.3.8
Alternative stopping
Operating principle
With the aid of a control command, you can switch from the parameterized stopping mode to
a parameterizable alternative stopping mode. Every stopping mode can be combined with
every alternative stopping mode. The switchover to alternative stopping must take place
before the start of the planned stopping. You cannot switch to alternative stopping while
stopping. In order to use the "alternative stopping" function, activate the control function via
one of the following control sources:
● Input actions ("Use alternative stopping mode")
● 3RW5 communication module (PIQ: Use alternative stopping mode)
● 3RW5 HMI High Feature
("Parameters > Soft Starter > Settings stopping mode > Alternative stopping")
You will find additional information on input actions in Chapter Control (Page 162).
Requirements
● Access protection to the 3RW5 HMI High Feature is not active or has been reset.
● You are in the "Control" menu.
Parameters
Parameters
Description
Stopping mode
• Coasting down (factory setting).
• Torque control
• Pump stop
• DC braking
• Dynamic DC braking
• Voltage ramp
Stopping time
• 10 s (factory setting)
Stopping torque
• 50% (factory setting)
Dynamic braking torque
• 50% (factory setting)
DC braking torque The motor's braking force can be set with the
amount of the alternative DC braking torque. The
alternative DC braking torque must be increased
if the motor is to accelerate again during DC
braking.