Siemens SIRIUS 3RT Manual page 75

6.3 Operating mechanism system / coil selection 3RT contactors and 3RH2 contactor relays
Control
Version of 3RT1...-.N solid-state operating mechanism for PLC output 24 V DC
There are 2 ways of controlling the contactors:
● Variant 1: via A1 / A2
● Variant 2: via 24 V DC PLC output
Control via A1 / A2
The contactors are controlled conventionally by applying the control supply voltage at A1/A2
through a switching contact.
①
Note
The slide switch on the front side of the withdrawable coil must be in the "OFF" position
(corresponds to the factory default setting). The contactor can otherwise not be operated via
A1 / A2.
Control via control input 24 V DC
①
②
The contactor can be operated direct via an output of a controller (PLC).
● Rated voltage 24 V DC, operating range 17 to 30 V
● Current consumption ≤ 30 mA
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
Slide switch "OFF"
Slide switch "ON"
PLC input 2-pin connector
Configuration
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