Rw44 25 - Siemens SIRIUS 3RW44 User Manual

Circuit Examples
9.1.3 3RW44 in a Standard Circuit and DC Braking
3RW44 22 to 3RW44 25
Main circuit
I >> I >>
1) For permissible main and control voltage values, refer to Technical Data, pages 10-12 to 10-16.
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 particularly
applies to motor protection tripping. For safety reasons, we recommend integrating the group error 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 layout (standard circuit)" table on page 10-21.
The "DC braking" function is recommended for applications with larger centrifugal masses (J
Output 2 must be set to "DC braking contactor".
9-4
Control circuit
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3)
Stopping Function for Device Types
> J
load motor
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 06
).