Yes.
No. Openinverter supports this feature, but the SDU has no pin for it.
Quite simply, it is dangerous to open the contactors while the motor is spinning or current is flowing through the motor. Normally your key switch will simultaneously open the contactors and remove power from the inverter (pin 13). That's absolutely fine, just don't do it when the car is moving, and ideally put it in neutral first to make 100% sure the inverter is not active.espriev wrote: ↑Sun Feb 05, 2023 2:11 am Is there a power down sequence? This possibility you mention of destroying the drive unit by turning it off at the wrong point is one of those "blow up the entire thing" things I hope to wrap my head around, it is turning off the "ignition" (+12 VDC to pin 13) while the motor is spinning that is the dangerous condition? As I understand it turning the system on is +12 to the relays and pin 13, then press "start" (pin 9 to +12). To turn off disconnect +12 to everything (after direction is "off" as in neither forward or reverse is selected? must that be the same to turn on?)
Lots of stupid questions, I know, but if it keep me from blowing it up...
Ideally, the shutdown sequence would be:
* Stop the car (we don't want the motor generating power)
* Put inverter into neutral (neither FWD not REV selected, this fully disables the inverter)
* Open the contactors
* Power down the inverter
However, I do the last 2 steps simultaneously, as I believe most people do. I've also turned the key off with the car in drive tens of times by accident without issue, but this *could* be a problem if you have certain features enabled like ampmin or hill hold.