Recent content by evc_motorcycle

Hi everythingisawave, I believe that the only things that changed between my weird (kind-of) circular graph and the one I recently posted were the firmware on my controller and the order of my sin-cos wires. I had determined the correct color association, but then plugged them into pins 35/21 in...

I used the procedure outlined in one of the Sevcon manuals to determine the phase order of the motor we're using and which wire was sine and which was cosine. Once it was hooked up I followed the directions in another post on this forum and ran the encoder commision script. After graphing my...

Hi everyone, I am super excited to say that I have the 1302 spinning up successfully with the Sevcon Gen4!!! Turns out that there was a single parameter (minimum capacitor precharge voltage) that does not show up in the helper window in DVT 1.0. Once I fixed this value (and used the motor phase...

I am using DVT 1.0 (it is the only version we were able to get a copy of) and several of the GUI screens look different, such as the contactor one. I haven't used the command line for editing parameters, but I'm assuming all I need is the object dictionary and I just look up the address and...

Thank you all for the suggestions. I hadn't considered a worn-out keyswitch. I will definitely try swapping out both that and the contactor next time I'm in the lab. If the keyswitch is in fact the issue then I will put a relay in the loop to take some of the load off the keywitch. When I...

I can try the smaller relay as a secondary switch as we have some in the lab, but would the contactor be what's causing the precharge fail? I feel like that would be something else, or am I wrong?

The contactor I am using is a 12-24V contactor (Kilovac EV200 I believe). It had a built-in economizer which was causing issues back when I first installed it a few weeks ago. So I took it apart and removed the circuit board so now the wires just go straight to the coil. My pull-in voltage is...

Hello everyone, thank you so much for the suggestions and feedback! Sorry about the few day break- this week has been kind of crazy with midterms and other assignments. Updates since the last post are as follows: - I reflashed the gen4 with new firmware SN0058.28 (turns out the one it was...

Hi everythingisawave- what does it mean to have the inverter on and gating? Unfortunately, the motor cannot spin up to measure the values while coasting so we have been using a hand drill to accomplish this. Thanks for the concern as well- we have the motor secured to the table we are resting...

Thank you all for the feedback! I will try those different procedures next time I'm in the lab and see if I can get better results :D

Hi everyone, thanks for the responses! 1. we are using a hand drill to spin the motor, so I think out rotation is good. 2. when I take the trace I have the forward switch (we are using a three position switch to switch between forward, reverse, and neither) When I take the...

After a bit of time and research I was able to derive the equation needed for the offset, but my original problem still persists. I have verified using an oscilloscope that the sin/cos encoder is working. I have determined the phase order of the motor and made all of the (hopefully) correct...

Hello everyone, I am currently in the lab working on the process of determining the phase order of an ME1302 PMAC motor. The manual seems to be missing an equation and I am having trouble finding it other places online. Does anyone know that the formula is? Or is there an easier way to determine...

I have not tried that process yet. We've got a scope in the lab I can use so I'll be sure to try it out next time I'm in there!

Hello everyone, I am a member of my university's electric vehicle club and we are using a Sevcon Gen4 with an ME1302 in an electric motorcycle project. Over the past several weeks I have been familiarizing myself with the Sevcon DVT environment and editing parameters for the driver. There have...