Siemens SIRIUS 3RW52 - Soft Stopping

Functions
8.3 Soft stopping
SIRIUS 3RW52 Soft Starter
136 Equipment Manual, 04/2020, A5E35630451002A/RS-AE/005
8.3 Soft stopping
Operating principle
A voltage ramp is used to implement a smooth ramp-down. With the "voltage ramp" stopping
function, the motor voltage is decreased along a linear, negative voltage ramp until the
motor stops.
Application
Ⴠ Drives that abruptly come to a stop when switched off, thereby damaging the transported
goods.
Ⴠ E.g. bottle filling plants
Voltage characteristic
t
1
... t
2
Stopping time
U
N
Line voltage
Parameters
Parameter
Description
Stopping time The length of the stopping time defines the time within which the motor
voltage is reduced from line voltage to 0 V. It may take longer for the motor
to actually coast down to a standstill.
The setting "0 s" causes the motor to be shut down immediately without a
down ramp.
x Factory setting: 0 s
x Setting range: 0 ... 20 s