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AEM VCU-200 anybody running it successfully

16767 Views 81 Replies 21 Participants Last post by  mlrtime99
I've been watching the AEM VCU-200 for a while now, but I haven't found anyone to successfully run it besides AEM in their black mustang and when they redid the EV West van. But I am assuming that both of those took forever to work and I am not really interested in being their guinea pig.

Is anyone running this and how hard was it to setup?
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What else is out there that is in a comparable price range to. The vcu200 and ldu board (~$2500)? I'm waiting on that setup as you are/were, but I'm not quite ready for it yet so I don't have the time pressure. I was told by their sales dept they are beta testing the ldu board now with existing swap shops and are planning for it to go live later this year (so much for Q1 2021).
I find that getting knowledge of inverter board options is really scattered and poorly organized, so any info here on options would be a huge help.
I work for AEM so maybe I can answer any questions you have. I am not here officially but if it's info I can share I will.
Biggest question is "When", and how plug-and-play is it? I'm not looking to squeeze every last ounce of torque out of my Tesla LDU, I just want something that will let me hook-up and go relatively easily. :)
Thanks Mojave!
The VCU 200 is shipping now (this thread is titled VCU200) but I think you are really talking about the Tesla base LDU board right?
Correct, specifically the LDU. I think I have plans for everything else that's just the last component... (I think)
Don't know about Rywire. I have not had anything to do with them or any project they are working on.

The vast majority of AEM EV customers are dealers developing either complete or partial kits and it's not our place to say what they are doing. Some are already out there and of those the biggest is Cascadia (Reinhart Motion/AM Racing) but they are most definitely not the DIY crowd and their customers projects seem to fly way under the radar until they release them as fully formed products. That's why we do videos on some of our vehicles because if we didn't then there would be no publicity at all. Vehicles like the Ford Cobra Jet 1400 were built and running in 2019 but didn't get announced till mid-2020 and only in the last 6 months has it been out and about for people to see in person. The lead time on these projects is huge.

With all that said, the DIY application for the VCU200 or VCU300 as a stand alone device is fairly limited. It is a comprehensive vehicle controller that manages everything in the vehicle, because of this, it is not a casually installed add-on component. It needs to be designed in to the system from the very start because it will control everything and if you don't have it controlling everything then you are better off not using it. It wants to have full control over your contactors, Inverter, OBC, DCDC, BMS, J1772, Pumps, Fans, AC Compressor... everything because it's all functionally interconnected. Casually installing the VCU isn't possible, it's all or nothing. But because it is spec'd out at the very start of a vehicle concept and it is a relatively new product, I suspect you wont see the drive kits of finished vehicles the currently shipping VCU200 modules are going into for a while yet. I cant change that.
I think I can do everything but A/C, cause I'm using a PWM (not CAN) compressor, unless the VCU200 will drive that. Otherwise I am totally fine running everything with the VCU (in fact I was hoping to).
Without that the VCU cant use the A/C along with a chiller to cool the batteries.
I think I am misunderstanding something here. I'm intending to use a traditional coolant system and Tesla coolant heater for temperature control of the batteries. I expect I'll be able to manage both of those through the VCU, correct?
Actually, Mojave, I'm assuming I can send a CAN signal to an arduino via the VCU, and just have the arduino interpret the CAN message into a PWM signal that drives the A/C compressor... I already have the PWM signal setup to output correctly from an arduino to drive the compressor. I'd just be changing my code logic on the arduino to interpret a CAN message instead of a temperature value from an external sensor. That would in theory let me retain climate control via the vcu, correct? I'm assuming that all interfaces and supports programmable behavior via the carbon display?
Awesome, thanks Mojave! I'm completely unfamiliar with the idea of supercooling the motor and inverter.

How knowledgeable are you about the cooling needs of a tesla motor and battery modules? I'm not planning on dragging the car (Porsche 944 with Model S base LDU and 16 battery modules). I've got a couple questions around that topic in another thread if you're up on that side of the technicals.
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