Functions
8
Overview of the described functions
Function Soft Starter
3RW55 3RW55 Failsafe
Parameter sets (Page 91) x x
Application wizard (Page 92) x x
Motor parameters (Page 95) x x
Startup (Page 131) 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 -
Breakaway pulse (Page 144) x x
Run-down (Page 146) x x
Coasting down (Page 148) x x
Voltage ramp (Page 149) x x
Torque control (Page 150) x x
Pump stopping mode (Page 152) 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 rmware version V2.0)
-
Sensorless motor standstill detection (Page 162) x
(from rmware version V2.0)
-
External motor standstill detection (Page 162) x -
Alternative stopping (Page 163) x x
Motor protection (Page 166) x x
Complete motor protection (Page 166) x x
Electronic motor overload protection (Page 166) x x
Temperature sensor (Page 169) 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
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