TWC "Info Wire"?

[Bayou Bert]

All the wiring is run and I am now in the process of hooking
stuff together. One wire I don't know what exactly to do with is
the "Info Wire" from the TWC backup battery.
The TWC manual says you can hook this to your EFIS or EIS and it will
give you the voltage of the backup battery if it's not on. But then is says
if the battery is providing power it "the info line is pulled to a low logic level"
what ever the heck that means.
I have GRT equipment and Ben said he was not sure.
So, has anyone else used this wire to monitor the backup battery?
Any help greatly appreciated.

[RV7AJeremy]

Bert,
I used the IBBS system to backup my G3X touch system. I found the IBBS manual to be written more for engineers than for pilots.

Download the G3X touch install manual, page 20-4 should help you out (even though you are not using garmin products). I connected the "info" wire to a voltage input on my engine monitor box; it will then display IBBS voltage on my G3X screen.

[Captain_John]

Bert, I tied that wire into my G3X EFIS.

It is a discrete active low that shows on my screen as "On Aux Power".

When I kick on the master, it disappears from the EFIS screen.

Certainly not required, but it is only one more wire to run.

It doesnt show aux battery voltage though.

CJ

[Mike S]

Originally Posted by RV7AJeremy

I found the --- manual to be written more for engineers than for pilots.

Way too common occurrence, I have found

[Bayou Bert]

Thanks, I haven't looked at the Garmin manual yet.
GRT EFIS provides a bunch of analog wires for stuff like tank levels,
trim indicator etc. Is that what I need to tie into?

[maus92]

Yea, I emailed TCW support about the "batt-info" wire a few days ago (wrt a G3x installation) which is not explicitly diagramed in the schematic. Here was their response:

"Page 4, item 7 of the manual describes pin 2. You may connect that up to an analog input on the g3x engine monitor and read the IBBS battery voltage."

[RV7AJeremy]

Originally Posted by maus92

Yea, I emailed TCW support about the "batt-info" wire a few days ago (wrt a G3x installation) which is not explicitly diagramed in the schematic.

G3X touch installation manual page 20-4 shows exactly how to integrate the new IBBS into the G3X system.

Hope this helps.

[maus92]

Originally Posted by RV7AJeremy

G3X touch installation manual page 20-4 shows exactly how to integrate the new IBBS into the G3X system.

Hope this helps.

Thx, I'm looking at that. I'm also integrating a VP-X, who's manual also has a section on TCW's IBBS - however it describes a different connector (even in the latest manual rev) on the IBBS, which makes it less useful. Hopefully, fusing all these sources will result in a working system on the first power up.

[RV7AJeremy]

Originally Posted by maus92

Thx, I'm looking at that. I'm also integrating a VP-X, who's manual also has a section on TCW's IBBS.

I would think you would want to keep the VPX and IBBS as two separate independent systems incase the VPX fails? Power1 inputs for the VPX and power 2 inputs for the IBBS. What is the advantage to integrating the two systems?

[Captain_John]

Here is how I wired mine.



Hope it helps.

Pin 5 isnt shown, but it does go to the Garmin discrete inputs. When pin 5 pulls an active low, it dings a message on the screen.

CJ