WIRING 1794 - IA16 with TB3 BASE.

Rahul3005

Member
Join Date
Dec 2017
Location
Mumbai
Posts
34
Good Morning

Please help me wiring of 1794-IA16 with TB3 base.

120VAC L2 (OV or cold ) is directly connected to field input , the other terminal of field input is connected to my terminal A0 , A1 ,A2 ... respectively.

I have connected 120VAC L1 (120V or hot) to terminal C-34.
I have connected 120VAC L2(0V or cold) to terminal B-16.

The wiring is basically ( sinking input and sourcing input card) , is the wiring OK or am I missing something ?

Please help as I am very much confused about the wiring.:rolleyes:

Screenshot_20201017-083805.jpg Screenshot_20201017-083656.jpg Screenshot_20201017-083644.jpg
 
In DC digital inputs , there's are 1794 - IB for sourcing input and 1794 - IV for sinking input , why is this terminology not used in AC digital inputs ?

Is the same card 1794-IA used for sinking and sourcing input ?
If yes , then what will be the difference in wiring if I am connecting either of them.
 
In DC digital inputs , there's are 1794 - IB for sourcing input and 1794 - IV for sinking input , why is this terminology not used in AC digital inputs ?

Because they would have a real hard time keeping their manuals and part numbers up to date, bear in mind it changes 50 (or 60 for ye across the pond) times a second.

https://profaceamerica.com/sites/de...ibrary/app_notes/d04d3f022ec61680/apnt109.pdf

Perhaps a diagram would help you,

https://www.manualsdir.com/manuals/...-diagnostic-modules-user-manual.html?page=113
 
120VAC L2 (OV or cold ) is directly connected to field input ,

wrong


the other terminal of field input is connected to my terminal A0 , A1 ,A2 ... respectively.

right


I have connected 120VAC L1 (120V or hot) to terminal C-34.

right

I have connected 120VAC L2(0V or cold) to terminal B-16.

right



Please refer to 2nd link top diagram for correction of other field input contact (C-35)
 

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