Do you have a multimeter with you? If so can you check if you have continuity between the 5v and the gnd (or C25 capacitor)
Edit: If the power led doesn’t light up, It may be a failure of the can tranceiver (U401)
I don’t have a multimeter, but I can pick one up today. Do you have any resource to show me how to test these things?
1- You need to put the Multi-meter in diode Check mode. (should be a symbole similar to this one)
2- Check if you get a beeping song when touching de lead together. (or if you don’t hear any sound check if the multi-meter show 0000 or something similar)
3- Use the c25 capacitor to see if the 5v is short to the ground (it is the easiest part to access for checking the 5v to the gnd)
4- If you the doesn’t get the same result as touching the lead together, GOOD New the 5v is ok, but the problem is somewhere else. But if you get a beeping sound or the result is the same as touching the lead together, then you have a short over the 5v, and from my experience, it is 90% chance of a internal short over the can tranceiver (u401).
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Wow thanks. I’ll go grab a multi-meter and check this.
Do I have any options to fix this? Or will I need to replace the VESC regardless?
I’m not very good a soldering and I don’t want to void my warranty.
Well, do you have the enertion warranty, if so I think you might need to wait for their respond, and you might need to send it, to their USA manufacturer
Ok UPDATE!
The vesc turned on again. I’m able to access the settings in the BLDC tool. Can someone please take a look at my motor settings and make sure I’m not pushing the VESC too hard or something?
Dual Enertion R-Spec motors Space cell pro-4 Enertion receiver and remote
Put the max voltage at around 57V if you are using a space cell pro, also I may suggest to drop the MAX ERPM to 70 000 to prevent damage on the drv.
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If you’re running dual motors, your current limits are too high. Keep in mind that values should be halved since you’re running dual setup. I’d make motor max 40-50 per vesc and adjust as needed. motor regen should be at 40ish or you will be braking pretty hard. Battery max is a bit low and should be higher at about 30amps per VESC. Your SCP4 supports 80A continuous, but you want to try to be below that. Battery regen is too high and it should be -8A per VESC for safe charging.
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Wow thanks guys. Glad I asked.
See below for new config. Any last things before I stress test it?
Thanks.
Looks good, though your low voltage cut off end is a bit low. You can keep it at that for more range, but make sure you get to a charger asap when you feel it kicking in.
This gives you an idea of how a voltage meter reads % to voltage.
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My advice is similar to his, though he was speaking about the SCP3 not 4
Got it Jinra,
Looks like 36 at 10s would be safer. I’ll update that.
I do 33v cut off start and 32v cut off end personally. You’re voltage will sag while riding so if you start the cut off too high you might trip it when riding with high current draw like up hills.
I did not say that your advice where not good, but, there is not so much difference between the SCP3 and SPC4, because by using the same 10S bms, they are in fact limited to the same continuous current. The major difference between the two are in term of the capacity and range they provide.
Also, you may want to use a lower Batt Min, at around -15A so it will provide a better braking solution.
Actually the SCP4 outputs 80A continuous vs 60A on the SCP3 due to the extra parallel cell. This also affects charging current so -8A battery min (dual vesc) is the safe spot for these cells. There is more capacity on the SCP4, but charging/discharging is also affected.
I have -8A on my dual VESCs with 45A motor regen and have no problem braking hard.
Yes you are right, my mistake there is a difference between the SPC3 and SPC4, but the continuous current is still not rated for 80Amp, it is the peak current at 80amp.
Pack rated to peak output of 80AMP, However incorporates a 40A Fuse for protection, this is ample for use on electric skateboards. This pack is for motors of 2400W or less (Including the 6372)
http://www.enertionboards.com/electric-skateboard-parts/space-cell-pro4-electric-skateboard-battery/
peak is actually higher than 80A, but you’re right it wont support continuous 80A, but should work for bursts. I’ve been trying to find a small fuse that’s rated higher than 40A to replace the stock one, but have had no luck finding one in this size. I may just swap out the fuse holder for a larger one that supports 80A.
But, be aware I think there BMS is only rated for 60AMP. So if you’re going over the bms limits you will probably burn the bms internal fuses (if there one, but with these Chinese (for now…) product you never know), or the BMS.