Siemens SIRIUS 3RW44 User Manual page 35

3/N/PE~50 Hz 400 V
L1
L2
L3
PE
Q1
F3
Q11
M1
U1 V1
W2 U2
Motor rotation in phase direction
Figure 3-5: Schematic circuit diagram of a 3RW44 soft starter in an inside delta circuit
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 06
Notice
The DC braking and combined braking device functions are no longer available
for inside delta circuits.
In order to ensure proper functioning of the soft starter, the electrical connection
of the main voltage (line and motor side) must be made according to the given
circuit examples (refer to Section Chapter 9.1 "Connection Examples for Main
and Control Circuits").
W1
V2
Notice
If a main or line contactor is used, this contactor must not be connected
between the soft starter and the motor or in the return line between the motor
and the soft starter. The soft starter would otherwise not recognize the current
circuit version (standard circuit or inside delta circuit) and would output the error
message: "Load phases 1-3 missing".
Installation, Connection and Branch Layout
3/N/PE~50 Hz 400 V
L1
L2
L3
PE
Q1
F3
Q11
M1
U1 V1
W2 U2
Motor rotation counterclockwise to phase direction
W1
V2
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