Technical consultation connection KC868-A16

[JulioVillamizar]

Hello.

I am interested in purchasing a KC868-A16 board to connect the programmable outputs (PGM) of a DSC Neo Alarm Center to the digital inputs (dry contacts) of the KC868-A16.

My question stems from the fact that the PGM outputs of the DSC Neo deliver a negative referenced to the 12v positive of the same board.

And to connect this directly to the KC868-A16 I would have to put a relay in the middle but this is not feasible.

The other solution is to know if I can disconnect the 12v from the KC868-A16 in the input optocouplers and directly insert the 12 from the DSC Neo.

Could you confirm if this is viable at the board level?

[admin]

i think you just use your device and KC868-A16 with same 12V power supply is ok. not need to cut wire.

[deanfourie]

The PGM is negative switched correct?

If so then wiring as per your diagram should work as far as I can see, just make sure you have a negative reference.

[admin]

if your board 0v is GND, just connect your board and A16 power two "GROUND" together.

[RvK]

I have Tasmoto running on my board but the inputs do not work. I suspect the the polarity of the optocoupler input is incorrect.
Can somebody tell me why input do not respond?

[admin]

you need tell us details, which board you are using? how you config in tasmota? how you trigger digital input , short input with gound?

[RvK]

Ah yes, Of cause. That is: KinCony 16 Channel Relay Board (KC868-A16)
Device 1+ 2 outputs, Devices 3 + 4 are inputs.
Inputs connected to ground to signal high/low.
Correct?

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If the input is to ground than the bottom diode will be used in optocoupler. Meaning no light is emitted. So no signal transfer.

[admin]

take a photo of A16 PCB, how you wire.

[RvK]

How can I add a photo?

[admin]

take a photo , post at here.