Search found 7 matches

by darseygodwin
Oct 31 2019 10:24pm
Forum: Electric Aircraft
Topic: Sevcon Gen 4 Errors and Solutions thread
Replies: 50
Views: 6888

Re: Sevcon Gen 4 Errors and Solutions thread

You mean that you have a Gen4 size 4 available instead of a size 6? Yea, you'll have less torque available because the controller will have a lower peak amperage available, holding all other things constant. Do you have the ability to increase your pack voltage? The gen4 size 4 can come in a higher ...
by darseygodwin
Oct 29 2019 10:20am
Forum: Electric Aircraft
Topic: Sevcon Gen 4 Errors and Solutions thread
Replies: 50
Views: 6888

Re: Sevcon Gen 4 Errors and Solutions thread

Voltage is the throttle assembly's output voltage that the controller is reading, and the value is the corresponding throttle value as a percentage of full throttle (applicable torque/speed setpoint depending on your application) from 0 to 1. Also worth applying a little safety factor on your low en...
by darseygodwin
Sep 28 2019 11:08am
Forum: Electric Aircraft
Topic: Sevcon Gen 4 Errors and Solutions thread
Replies: 50
Views: 6888

Re: Sevcon Gen 4 Errors and Solutions thread

Just thought I'd step in again since I last commented about the noise issues I was having and how it was finally diagnosed. 1. Contactor coil noise at 24v, running a 100v pack. Just like so many comments earlier, the PWM'ing is sending a lot of noise through the system. For me, it looked like it was...
by darseygodwin
Sep 25 2019 3:05pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: how to program a sevcon gen4
Replies: 199
Views: 64542

Re: how to program a sevcon gen4

The speed outputs would be easily done via canbus by setting your TPDO's. There's a google-able sevcon app note on how to program TPDO's. If you need an analog output, I'm not sure what options you have, I haven't looked into that. Maybe an alternate component on the canbus can output analog signals...
by darseygodwin
Sep 22 2019 11:49am
Forum: E-Scooter and Motorcycle General Discussion
Topic: how to program a sevcon gen4
Replies: 199
Views: 64542

Re: how to program a sevcon gen4

You'll have a much easier time with an oscilloscope, but it sounds like your encoder is something like 180 degrees out of alignment. Read this: https://www.e-kart.fr/images/stories/technique/SEVCON/sevcon-app-note-pmac.pdf If the link doesn't work, google for "sevcon app note". It explains what you'...
by darseygodwin
Aug 09 2019 11:53pm
Forum: Electric Aircraft
Topic: Sevcon Gen 4 Errors and Solutions thread
Replies: 50
Views: 6888

Re: Sevcon Gen 4 Errors and Solutions thread

Hey Mark! Well hopefully you're making progress at least. I'm sure it'll come out alright in the end of the tech is at least familiar with the sevcon Gen 4. In the last couple days, I found that my D-axis proportional gain was way too low. As soon as I brought that up, I was able to extract a ton mo...
by darseygodwin
Aug 02 2019 9:20pm
Forum: Electric Aircraft
Topic: Sevcon Gen 4 Errors and Solutions thread
Replies: 50
Views: 6888

Re: Sevcon Gen 4 Errors and Solutions thread

Hey Mark, I'm sure there are many things that could cause your error, but I have been dealing with similar symptoms on a Parker GVM motor (3ph PMAC, sin/cos encoder) and gen4 size 6 controller combo that I've 90% narrowed down to EMI to the motor encoder. While any of the experts can jump in to make...