CAUTION
Functions
5.1 Start modes
SIRIUS 3RW30 / 3RW40
28
Manual, 01/2010, 535 1995-02 DS01
The maximum ramp time for the SIRIUS 3RW30 soft starter is 20 seconds An appropriately
dimensioned SIRIUS 3RW40 or 3RW44 soft starter should be chosen for startup processes
with a motor ramp-up time > 20 seconds.
Figure 5-1
Principle of the voltage ramp
Figure 5-2
Principle of the voltage ramp for the torque characteristic
Risk of property damage
When using the 3RW30: 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.
9ROWDJHLQ
8
0RWRU
3DUDPHWHUL]DEOH
VWDUWYROWDJH
6KRUWVWDUWLQJWLPH
/RQJHUVWDUWLQJWLPH
3DUDPHWHUL]DEOH
VWDUWLQJWLPH
9ROWDJHDW
WKHPRWRU
7LPHW
V
0RWRUWRUTXH0
1P
0
'LUHFWRQOLQHVWDUWLQJ
PD[LPXPWRUTXH
WKDWFDQEHJHQHUDWHG
0
1RP
3DUDPHWHUL]DEOH
VWDUWYROWDJH
0
6RIWVWDUW
6KRUWUDPSWLPH
0
6RIWVWDUW
/RQJHUUDPSWLPH
0
/RDGHJ)DQ
3DUDPHWHUL]DEOH
WRUTXHVWDUWLQJWLPH
0RWRUKDVUXQXSDQGLV
LQQRPLQDORSHUDWLRQQ
1RP
6SHHGQ
PLQ
$FFHOHUDWLRQ
WRUTXH
Summary of Contents for SIRIUS 3RW40
Page 1: ...Soft starters SIRIUS 3RW30 3RW40 Manual 01 2010 Industrial Controls Answers for industry ...
Page 2: ......
Page 68: ...Connecting 9 1 Electrical connection SIRIUS 3RW30 3RW40 68 Manual 01 2010 535 1995 02 DS01 ...
Page 210: ...Index SIRIUS 3RW30 3RW40 210 Manual 01 2010 535 1995 02 DS01 ...
Page 211: ......