Flex I/O wiring diagrams

Outrage said:

Hey lads/Lasses,

sorry to drag up an old thread but im confused on the wiring of the Flex I/O 32 way Input modules. I've had a look through the manuals but I still can't get my head around wiring up the cards.

For each 2 wire input you need to wire one leg to the input channel terminal (0-32) and the other leg down to one of the 8x +V terminals which would mean potentially 4 cores per +v terminal (without using external terminals. the question is:

How do you supply power the module? with other Allen Bradley cards there tends to be seperate terminals for the +V and Com to supply power to the cards with other flex i/o modules there are commons that you link from module to module but the diagram for the 32 way shows these arn't connected.

Thanks in advance,

Lee

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bkottaras said:

Last terminal (+V) on the TB (#51 in the TB3 case) feeds the first terminal (+V) of the next TB (#34 in the TB3 case).
You daisy chain through all your TBs this way.
All terminals in between (+V) or (-V) are internally connected to each other.
You need to supply the first and take the next supply oyt of the last one
There's an issue with this type of wiring. The total current cannot exceed 10A. If it does you must wire it in a different way
For 32 point modules you have to split the +V and -V halfway through the TB.
Go on the AB web site and download the following PDF:
1794-sg002_-en-p.pdf
Hope this helps!

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