To 3Rw44 25; 3Rw44 In A Standard Circuit And Dc Braking 3) - Siemens SIRIUS 3RW44 System Manual

9.1.4 3RW44 in a Standard Circuit and DC Braking
to 3RW44 66
Main circuit
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1) For permissible main and control voltage values, refer to Technical Data, Pages 10-8 to 10-12.
2)
2) Caution: risk of restart!
The start command (e.g. by the PLC) must be reset before a reset command is issued, as an automatic
restart is executed when a start command is pending after the reset command is issued. This applies to
motor protection tripping in particular. For safety reasons, we recommend integrating the general fault output
(terminals 95 and 96) into the control.
3) If the "Combined braking" stopping function is selected, no braking contactor is required.
If the "DC braking" function is selected, a braking contactor must be additionally used. For types, refer to
the "Branch Component Circuitry (Standard Circuit)" table on Page 10-17.
The "DC braking" function is recommended for applications with larger centrifugal masses (J
Output 2 must be set to "DC braking contactor".
4) K4 auxiliary relay, e.g.:
LZX:RT4A4T30 (230 V AC rated control supply voltage),
LZX:RT4A4S15 (115 V AC rated control supply voltage).
SIRIUS 3RW44 System Manual
GWA 4NEB 535 2195-02 DS 04
Control circuit
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3)
Stopping Function for Device Types 3RW44 26
Circuit Examples
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Load Motor
9-5