Functions
8
Overview of the described functions
Function
Soft Starter
3RW55
3RW55 Failsafe
x
x
x
x
x
x
x
x
Automatic parameterization (Page 132)
x
x
Soft starting with voltage ramp (Page 134)
x
x
Soft starting with torque control (Page 137)
x
x
Soft starting with voltage ramp and current limiting
(Page 140)
x
x
Soft starting with torque control and current limiting
(Page 142)
x
x
Direct start (Page 143)
x
x
Motor heating (Page 143)
x
-
x
x
x
x
x
x
x
x
x
x
x
x
DC braking (Page 154)
x
-
DC braking with external braking contactors
(Page 154)
x
-
Dynamic DC braking without contactor (Page 157)
x
-
Reversing DC braking with a reversing contactor as‐
sembly (Page 160)
x
(from firmware version V2.0)
-
Sensorless motor standstill detection (Page 162)
x
(from firmware version V2.0)
-
External motor standstill detection (Page 162)
x
-
Alternative stopping (Page 163)
x
x
x
x
Complete motor protection (Page 166)
x
x
Electronic motor overload protection (Page 166)
x
x
x
x
Intrinsic device protection (Page 171)
x
x
Creep speed (Page 172)
x
-
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006
129