Typical circuit diagrams
10.1 Connection examples for main and control circuits
3RW44 soft starters
222 Manual, 03/2017, NEB535219502000/RS-AB/008
Direction of rotation change in inside-delta circuit
Main circuit
Option 1b
1)
For permissible main and control voltage values, refer to chapter Technical data of the
power unit (Page 259).
note the wiring suggestions for the inside-delta circuit on the main circuit side.
Incorrect connection can result in faults.
Note
Risk of restart
The start command (e.g. issued by the PLC) must be reset prior to issuing a reset command,
because the mo
tor attempts to restart again automatically if a start command is still active
following this reset command. This particularly applies if the motor protection has tripped.
For safety reasons, you are advised to integrate the group fault output (terminals
95 and 96)
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