IDG Switches in the B738

Question

...... (IDG1 & IDG2) only operate in one direction

There are two commands (on/off) for each switch,  but the off command does not function.

I am using SPST on/off toggle switches for these and have checked the wiring and config as best i can but cannot get the switches to function correctly.
Any suggestions please or is this an error in the Configurator?

Thanks for the great work!
Rgds

Clint

Answer 1

No, there is no error in the configuarator,
Yes, this switch works "like in real plane"  (one-way).
Supposed  "IDG cannot be reconnected in the air"


Vlad

Comments

Thanks for the quick response.

It's not a big problem as it would never be used in the air but sometimes, if the sim is out of sync with my hardware when setting up on the ground, I have to use the mouse to re-align.

Thanks
Clint

---

I suspect, that these switches (and lamps)  are just "dummy"  in most custom models (as a lot of other useless switches)
The only function that custom datarefs do is the switch animation and lamps on (maybe in Zibo not, but I'm not so sure).

I don't think you need to spend inputs ans wiring them.
Vlad

---

Ah OK, thanks Vlad. It is one of the checklist items on the interactive checklist (xchecklist) that I use. I guess I'll just edit it out then and disable the switches.

Thanks & regards
Clint

Answer 2

As you may know, the IDG can be disconnected in real B737 under certain conditions in the air, but the IDG cannot be reconnected  again  in the air.  The IDG can be connected only on ground maintenance again.

So, no matter if it's a switch (toggle with fixed states) it works in the REAL plane only in one way.
Thus, you can use the toggle switch physically, of course, but logically it works as a one-way action, that's why it is configured as momentary.

Once you will restart the plane the IDG will be connected again (if the switches are in initial state)

Why so? Because Zibo (i suppose) has no this logic and IDG can be reconnected in any time (that's wrong).

Regards,
Vlad