Siemens SIRIUS 3RW52 - Current limiting function

Functions
7.2 Current limiting function
SIRIUS 3RW52 Soft Starter
96 Manual, 01/2019, A5E35630451002A/RS-AD/004
7.2 Current limiting function
Operating principle
Activate the current limiting function if you want to ensure that a specific current value is not
exceeded during motor starting.
The motor is always started up with the voltage ramp. Before the current exceeds the
parameterized current limit x I
e
, the voltage ramp function is aborted and the current
limitation function starts. If the motor current drops below the limit value again, the voltage
ramp function takes over control again until the motor has finished starting up.
①
I
direct starting motor
②
I
soft starter
: Adjustable current limiting value
③
Voltage ramp