Connection
8.1 Connecting the function modules for direct-on-line start
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
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Manual, 02/2019, A5E03656507620A/RS-AD/005
Note
The 3RA2811 timing relay with ON-delay is connected to the contactor coil in series.
Contactor coil terminal A1 must not be connected.
Note
Contactor coil terminals A1 and A2 must not be connected when using the 3RA2831 function
module.
Description
Terminal
Circuit diagram
3RA2811-.CW10
ON-delay
A3 (+)
3RA2831-.D.10
ON-delay
A3 (+)
A4 (-)
Note
If the 3RA2812 timing relay with OFF-delay is fitted, the contactor coil is contacted through
the timing relay.
Contactor coil terminals A1 and A2 must not be connected.
Description
Terminal
Circuit diagram
3RA2812-.DW10
OFF-delay with control
signal
3RA2832-.D.10
OFF-delay with control
signal
B1 (+)
A4 (-)
A3 (+)
Reference
You will find further information about the conductor cross-sections in the appendix entitled
"References" under "SIRIUS Modular System (Page 74)" manuals and in the "SIRIUS -
System Overview" manual.