3RW44 soft starters
Manual, 03/2017, NEB535219502000/RS-AB/008
119
Device functions
7
7.1
Various parameter sets
7.1.1
Various parameter sets
The soft starter provides three individually adjustable parameter sets. One startup mode and
one coasting method can be selectively determined for each parameter set.
Applications
●
Starting Dahlander motors (variable-speed drive).
●
Starting an application with different load conditions (e.g. empty or full conveyor belt).
●
Separate starting of up to three drives with different run-up behavior (e.g. compressor and
pump).
7.2
Startup modes
Different starting functions can be selected thanks to the large number of applications for
which the SIRIUS 3RW44 soft starter can be used. The motor start can be optimally adapted
to each particular application.
7.2.1
Voltage ramp
The simplest type of soft start with the SIRIUS 3RW44 soft starter is achieved using a
voltage ramp. The motor's terminal voltage is raised during an adjustable starting time from a
parameterizable starting voltage to the line voltage. This startup mode is preset in the quick
start menu.
Starting voltage
The starting voltage determines the starting torque of the motor. A lower starting voltage
results in a lower tightening torque and a lower starting current. The starting voltage should
be selected such that the motor starts up immediately and smoothly once the start command
goes to the soft starter.
Содержание SIRIUS 3RW44
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