User Manual

Commissioning
12.2 Commissioning the 3RW30
SIRIUS 3RW30 / 3RW40
102 Manual, 10/2010, 535199502000 DS 03
The SIRIUS 3RW30 soft starter can be damaged in this application (set ramp time shorter
than the actual motor ramp-up time). A maximum ramp-up time of 20 s is possible for the
3RW30. An appropriately dimensioned SIRIUS 3RW40 or 3RW44 soft starter should be
chosen for startup processes with a motor ramp-up time > 20 s.
CAUTION
Risk of property damage
Make sure the selected ramp time is longer than the actual motor ramp-up time. If not, the
SIRIUS 3RW30 may be damaged because the internal bypass contacts close when the set
ramp time elapses. If the motor has not finished starting up, an AC3 current that could
damage the bypass contact system will flow.
When using the 3RW40: The 3RW40 has an integrated ramp-up detection function that
prevents this operating state from occurring.
12.2.6 ON output
ON output contact
t
U
S
U
N
U
R on
t
R on
t
ON 13/14
t
R on
t
IN 1
t
State diagram of the ON output contact
The output contact at terminal 13/14 (ON) closes if a signal is present at terminal 1 (IN); it
remains closed until the start command is removed.
The output can be used, for instance, to control a line contactor connected upstream or to
implement latching if you selected pushbutton control. For recommended circuits, refer to
chapter Typical circuit diagrams (Page 175).
For the state diagram of the contacts in the variou
s operating states, refer to chapter
3RW30: LEDs and troubleshooting (Page 48).