Power in Flux

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Type: Posts; User: frodus

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    Maybe take the cover off and make sure everything...

    Maybe take the cover off and make sure everything inside is seated correctly, especially the voltage leads.
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    I think he should be allowed back if he follows...

    I think he should be allowed back if he follows the rules and stays positive in his posts. His apology seems to show he understands.
  3. FA, That is the single best written post by...

    FA,

    That is the single best written post by you since you got here (and even of all the ones on DIY Electric Car). Thanks for taking a few minutes to write it. It was clear and concise and not as...
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    There can be a little difference between 89.1V...

    There can be a little difference between 89.1V when measured by the DeltaQ itself. It might be slightly higher at the battery if your multimeter is not calibrated.

    The lithium profile, when you...
  5. What is the part? I ship all over the world and...

    What is the part? I ship all over the world and custom order parts all the time, and use USPS and have legit customs forms.
  6. Can I work remotely? haha

    Can I work remotely? haha
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    RE: Display Myself and another company are...

    RE: Display
    Myself and another company are working on a device that can be connected to the Zeva BMS via CAN, as well as the Sevcon Gen4 controllers to read various parameters via Torque for...
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    I just mean that something, like charger or DC-DC...

    I just mean that something, like charger or DC-DC is injecting noise back into the system. When removed, things work. When put back, things stop. There's likely some sort of either EMI, or a ground...
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    Can you post the wiring diagram or sketch?

    Can you post the wiring diagram or sketch?
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    OK, gotcha. That way it wouldn't power on. ...

    OK, gotcha. That way it wouldn't power on.

    Sounds like there's a noise coupling somewhere. Maybe one of the chassis's of the devices is grounding to the chassis of the vehicle.
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    Do you have a schematic? I can't find in this...

    Do you have a schematic? I can't find in this thread. Sketch your system if possible. Probably going to work at 12V.
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    Sounds good! What is the output of the kelly...

    Sounds good!

    What is the output of the kelly for the contactor drive? These are 12V coils (no economizer, so compatible with Sevcon/Curtis and others).
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    You're in Munich? We're going next year for...

    You're in Munich? We're going next year for Oktoberfest. We should meet up!

    I have LEV200 contactors available and in stock if you need anything. Shipping isn't that bad.
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    When you say PWM driver for the main contactor,...

    When you say PWM driver for the main contactor, what do you mean?
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    Glad we got it working so easily. It really is a...

    Glad we got it working so easily. It really is a nice motor/controller combo once it's set correctly.

    VIDEO PLEASE!!!!
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    Oh no! Yeah, those enclosed DC-DC's may have...

    Oh no! Yeah, those enclosed DC-DC's may have issues with dust getting in.

    Do you have room for Sevcon DC-DC's? I sell 500W versions, not sure if that is enough to run some of the 12V system.
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    OK, so no issues with the 12V wires being...

    OK, so no issues with the 12V wires being disconnected, correct? Does the battery power the left side devices and the DC-DC powers the right side devices?

    Was the same 12V connected when you...
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    What is the B&B Canop? Is it a Can opto isolator?...

    What is the B&B Canop? Is it a Can opto isolator?

    How does the 12V battery charge if there's a diode?

    Try this: Try disconnecting the + and - wires from the main 12V distro. Just have the 12V...
  19. Thread: Sun 300-1774

    by frodus
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    I had some that used a different connector, but...

    I had some that used a different connector, but something along those lines. They may need some of them connected together to enable the power supply. Also, it looks like that's where it gets it's...
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    OK, that DC-DC should be isolated (looks like a...

    OK, that DC-DC should be isolated (looks like a switching power supply).


    I think I'd start looking for ground loops somewhere. Check to see if you can measure any resistance between B- and the...
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    To clarify, the files I load, you do not manually...

    To clarify, the files I load, you do not manually close the contactor. It should shut once you put pack voltage to the KSI pin on the controller as long as there's no faults. The contactor is...
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    Sometimes on or off doesn't matter with a DC-DC....

    Sometimes on or off doesn't matter with a DC-DC. Sometimes the noise gets through regardless, if they're coupled somehow. What Meanwell is it?
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    Post a schematic when you get it. Include all...

    Post a schematic when you get it. Include all ground connections you've got.

    It could be EMI, or could be that something is getting grounded from the Curtis side, to your 12V side. You could start...
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    I need more tools like that. Like a vice and a...

    I need more tools like that. Like a vice and a nice angle grinder. Prolly going on my list of shit to buy soon as I finish this Kart.
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    Nice work! Looking to update Saturday for you.

    Nice work!

    Looking to update Saturday for you.
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