Wiring for 3RW55 soft starter with direct-on-line starting (DOL) as emergency start
The example shows the 3RW55 soft starter with a Standard circuit.
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4
4
3(
7
7
7
/
/
/
4
:
9
8
0
0
/
/
/
/
1
4
6
6
6
6
)
4
$
$
1
2
1
&
/
0
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,
'
,
'
,
'
,
$4
,
$4
8
$4
7
7
1
2
1
2
1
2
F1
Fuse
S1
Selector switch Soft starting / direct-on-line starting
S2
Switch: Start / stop (3RW55 soft starter)
S3
Pushbutton: Reset
S4
Switch: Direct on-line starting (DOL)
Q11
3RW55 soft starter
Q21
Line contactor
M1
Motor
PE
Protective conductor
A.3.11
Starting a Dahlander motor
Requirements
• ON / RUN relay output was parameterized to ON.
• No soft stop possible. Set the ramp-down time 0 s at the setting element
Example circuits
A.3 Special applications
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006
331