Sabvoton mqcon lack voltage

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TannyFordas   1 mW

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Sabvoton mqcon lack voltage

Post by TannyFordas » Jun 09 2020 9:50am

Hey, just connected my svmc7280 and connected via Bluetooth to the mqcon app and I'm getting a "lack voltage" error from the app despite the display confirming that the controller is in fact receiving about 83v. I've check the low voltage cutoff and its set to 40v so that's not the issue. The motor has been connected to the motor and the battery but behaved exactly the same when only connected to battery. Any ideas?
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Jonno   100 W

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Re: Sabvoton mqcon lack voltage

Post by Jonno » Jun 10 2020 3:07am

Try unplugging all the connections and check that the pins are straight.

Jonno
Modified EEB frame, 888 forks, 280mm DNM pit bike shock, QS273 40h V3 3.5t, Nucular Electronics 24F controller 300a, 92V @ 36ah 26650 cells, 300a BMS with bypass,
Hope V4 + Galfer 223mm discs + Variable regen braking.
Amongst other builds.

Black6spdZ   1 W

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Re: Sabvoton mqcon lack voltage

Post by Black6spdZ » Jun 10 2020 1:21pm

I had same issue with my controller at first.. if you use the Bluetooth adapter you need to disconnect the 3-pin plug going to the lcd connector and power up the controller with the lcd

TannyFordas   1 mW

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Re: Sabvoton mqcon lack voltage

Post by TannyFordas » Jun 10 2020 8:38pm

Black6spdZ wrote:
Jun 10 2020 1:21pm
I had same issue with my controller at first.. if you use the Bluetooth adapter you need to disconnect the 3-pin plug going to the lcd connector and power up the controller with the lcd
that was it, thankyou :D i have no idea what the issue was but you've solved it.

PlanetDad   100 mW

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Re: Sabvoton mqcon lack voltage

Post by PlanetDad » Apr 08 2021 1:06pm

Black6spdZ wrote:
Jun 10 2020 1:21pm
I had same issue with my controller at first.. if you use the Bluetooth adapter you need to disconnect the 3-pin plug going to the lcd connector and power up the controller with the lcd
How do you power it up with the LCD disconnected?

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amberwolf   100 GW

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Re: Sabvoton mqcon lack voltage

Post by amberwolf » Apr 08 2021 9:31pm

PlanetDad wrote:
Apr 08 2021 1:06pm
Black6spdZ wrote:
Jun 10 2020 1:21pm
I had same issue with my controller at first.. if you use the Bluetooth adapter you need to disconnect the 3-pin plug going to the lcd connector and power up the controller with the lcd
How do you power it up with the LCD disconnected?
I believe the poster meant to disconnect the *bluetooth* from the LCD connector of the controller, and then using the LCD to power up the controller (by plugging the LCD back in to that connector). But I don't have one to verify this with, so I can't say for certain.

Jonno   100 W

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Location: UK

Re: Sabvoton mqcon lack voltage

Post by Jonno » Apr 09 2021 5:17am

There is a 3 pin connector on the controller that is plugged into another from the controller. Unplug it and your bluetooth and app will work. Don't forget to plug it back in when you're done.

plug wire colours yellow, green, brown to yellow, green, black

Jonno
Modified EEB frame, 888 forks, 280mm DNM pit bike shock, QS273 40h V3 3.5t, Nucular Electronics 24F controller 300a, 92V @ 36ah 26650 cells, 300a BMS with bypass,
Hope V4 + Galfer 223mm discs + Variable regen braking.
Amongst other builds.

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