8 3RW3 semiconductor motor control unit (soft starter) - Siemens ...
8 3RW3 semiconductor motor control unit (soft starter) - Siemens ...
8 3RW3 semiconductor motor control unit (soft starter) - Siemens ...
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<strong>3RW3</strong> <strong>semiconductor</strong> <strong>motor</strong> <strong>control</strong> <strong>unit</strong><br />
Position of the terminals<br />
<strong>3RW3</strong>0<br />
The following graphic illustrates the position of the terminals and the potentiometers<br />
for adjustment.<br />
Frame size S00<br />
<strong>3RW3</strong>01.<br />
Frame size S0 to S3<br />
<strong>3RW3</strong>02./303./304.<br />
1 L1 3 L2 5 L3<br />
1 L1<br />
3 L2 5 L3 IN1 A1<br />
A2 A1 1<br />
3RW<br />
5<br />
10<br />
5<br />
10<br />
0 20s<br />
0<br />
20s<br />
min max 5<br />
10<br />
min max<br />
5<br />
10<br />
0<br />
20s<br />
0<br />
20s<br />
13 14/23 24<br />
2 T1<br />
4 T2 6 T3 A2<br />
2 T1 4 T2 6 T3<br />
Fig. 8-17: Position of the terminals and the potentiometers for adjustment<br />
<strong>3RW3</strong>1<br />
The <strong>3RW3</strong>1 <strong>soft</strong> <strong>starter</strong>s are available in frame size S0. Outwardly, they differ<br />
from the <strong>3RW3</strong>0 in the labeling of the contacts and the terminals:<br />
• There is no BYPASSED auxiliary contact. The free contact is used to<br />
enable the necessary drive contact IN2 to switch between the ramp<br />
times t R1 and t R2 .<br />
• The <strong>3RW3</strong>1 does not have a coasting-down ramp. The potentiometer with<br />
which the coasting-down time is adjusted on the <strong>3RW3</strong>0 is used here to<br />
set the second ramp time t R2 .<br />
• There is no ON auxiliary contact.<br />
Line length of the <strong>control</strong><br />
cable<br />
To eliminate problems with the cable coupler capacitances, the <strong>control</strong> cable<br />
should be shorter than 15 m. (This is based on devices with a rated <strong>control</strong><br />
supply voltage of UC 24 V to 50 m.)<br />
To eliminate problems in <strong>control</strong> cables that are fed out of the cubicle, coupling<br />
links must be used.<br />
8.3.6 Event messages and diagnostics<br />
Event messages<br />
READY LED<br />
Continuous<br />
Flashing<br />
Ready for operation<br />
while starting up or coasting<br />
down<br />
BYPASSED LED Continuous Bypassed<br />
Table 8-14: <strong>3RW3</strong>0/31 event messages<br />
SIRIUS System Manual<br />
8-32 GWA 4NEB 430 0999-02c
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