Siemens SIRIUS 3RW30 Manual page 188

Typical circuit diagrams
15.9 Emergency stop
Figure
(1) For the permissible values for the main and control voltage (dependent on the MLFB),
refer to chapter Technical data [Page 121] .
(2) Automatic restart.
Can result in death, serious injury, or property damage.
The start command (e.g. issued by the PLC or switch S1) must be reset prior to issuing a
RESET command because the motor attempts to restart again automatically following this
RESET command (3TK or 3RW) if a start command is still present. 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) in the controller.
(3) Alternatively, the motor feeder can be assembled as a fuseless or fused version with type
of coordination 1 or 2. For the assignment of fuses and switching devices, refer to chapter
Technical data [Page 121]
For the optional thermistor motor protection evaluation, refer to Typical circuit for the optional
thermistor motor protection evaluation [Page 167].
NOTICE
If the soft stop function is set (ramp-down time potentiometer set to >0 s) and the emergency
stop circuit is tripped, a "Missing load voltage, phase failure / missing load" fault may be
indicated on the soft starter. In this case, the soft starter must be reset according to the
selected RESET MODE.
188
15-26 Wiring of the 3RW40 2 to 3RW40 4 control circuit and the 3RW40 2 to 3RW40 7 main
circuit
WARNING
SIRIUS 3RW30 / 3RW40
Manual, 01/2010, 535 1995-02 DS01