SIEMENS
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Siemens IC 10 · 2017
Power Contactors for Switching Motors
Accessories and Spare Parts for SIRIUS 3RT Contactors and SIRIUS 3RH2 Contactor Relays
Accessories
3
This easy integration of the starters in the TIA world does not limit
the flexibility in the field in the least. For example, all function
modules have special terminals in order to enable direct local
disconnection. These terminals can be connected for example
to a position switch. The input interrupts the voltage supply to the
contactor coil directly, i.e. without going through the PLC. These
terminals are jumpered in the as-delivered state.
Local manual operation of the complete starter group is also
straightforward using a hand-held device. The latter is easily
connected to the last starter and can be built into the front panel
of the control cabinet if required. This offers significant advan-
tages particularly for commissioning.
SIRIUS function modules with IO-Link are used above all in ma-
chines and plants in which there are several motor feeders in
one control cabinet. Using IO-Link, the connection of these feed-
ers to the automation level is easy, quick and error-free. And with
IO modules no longer needed, the width of the PLC is far smaller.
SIRIUS 3RA2712 function modules for AS-Interface for mounting on 3RT2 contactors
Topology with AS-Interface
This easy integration of the starters in the TIA world does not limit
the flexibility in the field in the least. For example, all function
modules have special terminals in order to enable direct local
disconnection. These terminals can be connected for example
to a position switch. The input interrupts the voltage supply to the
contactor coil directly, i.e. without going through the PLC. These
terminals are jumpered in the as-delivered state.
SIRIUS function modules with AS-Interface are recommended
above all in machines and plants requiring easy connection of
several different sensors and actuators both inside and outside
the control cabinet to the higher-level control system. And with
IO modules no longer needed, the width of the PLC is far smaller.
NSB0_02088b
Direct-on-line starter
Reversing starter
Wye-delta starter
Addr. 1a
Addr. 1b
Addr. 2a
AS-Interface
© Siemens AG 2016