SDS CPI2 - Page 33

rv6ejguy · #**321** 02-09-2020, 10:17 AM

Congrats Charlie and thanks to Lee (of Reno fame) and Bruce for helping out. You guys were all a pleasure to work with and were patient when we had to deliver fixes for your issues.

akschu · #**322** 06-11-2020, 07:35 PM

Ross,

Are we going to see a new "Design1" style head for the CPI2? The current one won't fit in my panel, but the short/wide one could be made to fit.

Thanks,
schu

David Carter · #**323** 06-11-2020, 07:49 PM

I'd love to have this for my new panel.

Quote:

Originally Posted by akschu

Ross,

Are we going to see a new "Design1" style head for the CPI2? The current one won't fit in my panel, but the short/wide one could be made to fit.

Thanks,
schu

F1 Rocket · #**324** 06-11-2020, 08:43 PM

Me 3 on a Design 1 type controller for the CPI2. But I?ve already asked Ross and been told it?s not likely to happen soon. So I?ll be fitting the current design in my Rocket.

akschu · #**325** 06-12-2020, 06:43 AM

If not a design1, at least a remote LOP switch so I can hide it.

David Carter · #**326** 06-12-2020, 06:51 AM

Quote:

Originally Posted by akschu

If not a design1, at least a remote LOP switch so I can hide it.

I don't view that as an acceptable alternative. There are other important data points on that display, such as the primary & backup battery warnings.

rv6ejguy · #**327** 06-12-2020, 07:09 AM

The CPI-2 programmer has a LOP switch on the programmer keypad.

Some folks who want the Design1 programmer to fit their panel space have ordered a parred down EM-5 to do ignition only. This is slightly less expensive than the CPI-2 but you don't have the automatic battery switch over capability.

Unfortunately, we are so busy these days we won't have time until 2021 to look at interfacing the Design1 PGU with the CPI-2. Our priority is to finish the design and testing of the EM-6 ECU first as that is already almost 2 years behind schedule.

CPI-2s are sold out at this time, more PCBs are being produced now. Should have those in hand just before the end of this month.

akschu · #**328** 06-15-2020, 11:41 AM

Ross,

In comparing the CPI-2 to the other solutions, the thing that keeps coming up is the battery switch and OV protection.

I don't plan on using a backup battery because I have a secondary alternator in my design, which begs the question, how does the CPI2 deal with an OV condition when the battery is not used? Does it shut down until the voltage levels return to normal? Or does it blow it's internal fuse? What do the CPI1 and EM5 boxes do in those conditions?

Both of my alternators have OV protection, but if I reset a breaker in flight and it happens again for 100ms, I don't want it to take out my engine.

rv6ejguy · #**329** 06-15-2020, 12:23 PM

The CPI-2 will typically switch over to the backup battery if the primary goes OV. It will switch back if the primary voltage returns to normal.

If you don't plan a backup battery with the CPI-2, I'd say there are few advantages to using it over the CPI if you already have OV protection unless panel space is at a premium.

On the CPI and EM-5, there is no OV protection built in so you should have external OV protection.

With almost everyone fitting glass panels these days, you should have external OV protection also fitted to protect those electronics as well.

akschu · #**330** 06-15-2020, 03:04 PM

I appreciate the response, but it doesn't really answer my question. If I apply 40v to a CPI2 that doesn't have an external battery, what does it do? Fry? Switch off? Blow a fuse?

I do have OV protection on both alternators, but still want to know what it does.