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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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
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