Issue with 1-10v input on X4

[Raiden]

Was connecting a door reed switch today and noticed something weird with one of the input channels.

Channel 1 is connected to power loss detection relay and is normally reading 2.5v
Channel 2-4 all also read 2.5v

If I connected reed switch to channel 2. In open state it read 2.5 on debug port, but switch port constantly ticks on and off. Plug same adapter to port 3 or 4 and update config to read them and everything works normally. I'm not sure if there is some momentary short on port 2 that causes it to drop to 0v that debug port GUI is not picking up, but it's staying at 2.5 while switch port clicks back and forth.

This happens without anything connected to 1-10v port at all, not even 4 cable breakout.

Any thoughts what could be going on? Imagine this is not expected behavior.

 

[Raiden]

Screenshots

 

[Danny]

Others have had similar issue before. How do you have the switch input setup?

 

[Danny]

If switch form 2.5v to 0v I would use 0v to trigger it as either on or off and not the 2.5v. The 2.5v is a floating input.

 

[Raiden]

So channel 2 is broken then? Exact same setup work fine on other channels. Is this common issue or should I exchange to get a better wired one?

 

[Danny]

Set voltage range to 0v and set it to open when outside the range and it will work. What I was trying to say as you cannot count on a floating input to be stable. They say it should be around 2.5v but it may vary. All the third party switch boxes and button boxes do not rely on the open voltage being 2.5v. I have not either.