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Old October 16th, 2020, 11:21 PM   #1
Rahul3005
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Exclamation WIRING 1794 - IA16 with TB3 BASE.

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.
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Old October 16th, 2020, 11:30 PM   #2
Rahul3005
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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.
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Old October 17th, 2020, 12:20 AM   #3
the_msp
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Quote:
Originally Posted by Rahul3005 View Post
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/def...80/apnt109.pdf

Perhaps a diagram would help you,

https://www.manualsdir.com/manuals/5....html?page=113
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Old October 17th, 2020, 01:40 AM   #4
Rahul3005
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Thanks for the reply.

Is the wiring i have shown correct ? or am i missing something ?
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Old October 17th, 2020, 01:47 AM   #5
the_msp
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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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