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Re: How to wire brakes to PowerVelocity controller?

Posted: Jan 06 2019 5:50pm
by MJSfoto1956
Powervelocity.com wrote:
Jan 06 2019 5:16pm
Actually, please connect only the signal wire to the module as the common ground is already there on the module. That pin is also reserved for something else in the future.
So for the use case of eBrake as a switch only (no lighting) the following diagram is correct?

M

Re: How to wire brakes to PowerVelocity controller?

Posted: Jan 06 2019 5:54pm
by MJSfoto1956
Powervelocity.com wrote:
Jan 06 2019 5:16pm
The brake signal is for signaling only. It's 5v max and very low amps.
I'm confused. I thought the eBrake is merely a "short" between the white/blue wire and the black wire. No intrinsic voltage involved at all. Just continuity. To wit:
01_InAndOutInterfaceRqmts3.png
Please set me straight.

M

Re: How to wire brakes to PowerVelocity controller?

Posted: Jan 06 2019 6:51pm
by Powervelocity.com
Correct!
MJSfoto1956 wrote:
Jan 06 2019 5:50pm
Powervelocity.com wrote:
Jan 06 2019 5:16pm
Actually, please connect only the signal wire to the module as the common ground is already there on the module. That pin is also reserved for something else in the future.
So for the use case of eBrake as a switch only (no lighting) the following diagram is correct?

M

Re: How to wire brakes to PowerVelocity controller?

Posted: Jan 06 2019 7:01pm
by Powervelocity.com
Well, voltages are present in anything electrically powered. In this case, we are talking about digital signals.
"Open" translates to 5v at the brake signal wire when the brakes are disengaged.
"Closed/shorted" means 0v at the brake wire when brakes are engaged.

This is how processors in the controller or BT module differentiate between two states, electrically speaking.
MJSfoto1956 wrote:
Jan 06 2019 5:54pm
Powervelocity.com wrote:
Jan 06 2019 5:16pm
The brake signal is for signaling only. It's 5v max and very low amps.
I'm confused. I thought the eBrake is merely a "short" between the white/blue wire and the black wire. No intrinsic voltage involved at all. Just continuity. To wit:

01_InAndOutInterfaceRqmts3.png

Please set me straight.

M

Re: How to wire brakes to PowerVelocity controller?

Posted: Jan 06 2019 9:02pm
by MJSfoto1956
Powervelocity.com wrote:
Jan 06 2019 7:01pm
Well, voltages are present in anything electrically powered. In this case, we are talking about digital signals.
"Open" translates to 5v at the brake signal wire when the brakes are disengaged.
"Closed/shorted" means 0v at the brake wire when brakes are engaged.

This is how processors in the controller or BT module differentiate between two states, electrically speaking.
Fair enough. But the behavior you describe is merely "boolean". And unless you have some other inside information to reveal, I would be willing to bet that the original Chinese engineers were simply testing for 5v or "something else" -- the MCU then makes decisions based on this EITHER/OR situation. Guess I get to play around to see if I'm right or not.

M

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Jan 06 2019 10:55pm
by MJSfoto1956
Powervelocity.com wrote:
Jan 06 2019 2:47pm
EBS+ is similar to EBS- in function which means it also communicates brake signal. The difference is that it expects positive input (instead of ground like with EBS-). The positive input makes sense when you want the stop signal to light up when you press the brakes. So, you would parallel the EBS+ with the stop signal light wire and feed 12v to the brake lever switch input, so that when you engage the brakes, both EBS+ and your stop signal light get 12v. That would communicate the brake event to the controller and light up the brake light at the same time.
Just to be complete, please confirm that this is how one would wire up eBrakes to the sole EBS+ connector, ignoring the two EBS- connectors.

M

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Jan 06 2019 11:22pm
by MJSfoto1956
And finally, a version that uses an SPST relay to close the controller's ESB- brake circuit when the brake light goes on.

This seems to be the way to go for any eBike/eScooter/eMotorcycle where having a brake light is a must.

M

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Jan 07 2019 4:55pm
by Powervelocity.com
Yep, a relay would work. As long as it's isolated, so you don't feed 12v to EBS-.
EBS+ however, can take 12v.
MJSfoto1956 wrote:
Jan 06 2019 11:22pm
And finally, a version that uses an SPST relay to close the controller's ESB- brake circuit when the brake light goes on.

This seems to be the way to go for any eBike/eScooter/eMotorcycle where having a brake light is a must.

M
MJSfoto1956 wrote:
Jan 06 2019 10:55pm
Powervelocity.com wrote:
Jan 06 2019 2:47pm
EBS+ is similar to EBS- in function which means it also communicates brake signal. The difference is that it expects positive input (instead of ground like with EBS-). The positive input makes sense when you want the stop signal to light up when you press the brakes. So, you would parallel the EBS+ with the stop signal light wire and feed 12v to the brake lever switch input, so that when you engage the brakes, both EBS+ and your stop signal light get 12v. That would communicate the brake event to the controller and light up the brake light at the same time.
Just to be complete, please confirm that this is how one would wire up eBrakes to the sole EBS+ connector, ignoring the two EBS- connectors.

M

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Jan 07 2019 7:10pm
by MJSfoto1956
Powervelocity.com wrote:
Jan 07 2019 4:55pm
Yep, a relay would work. As long as it's isolated, so you don't feed 12v to EBS-.
So, aren't most (if not all) relays by definition "isolated"?
Or do I have that wrong?

M

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Jan 08 2019 11:14am
by Powervelocity.com
Not all. There are non-isolated relays or circuits simulating relay functionality.
The definition of a relay doesn't make any implications about its isolation properties.
MJSfoto1956 wrote:
Jan 07 2019 7:10pm
Powervelocity.com wrote:
Jan 07 2019 4:55pm
Yep, a relay would work. As long as it's isolated, so you don't feed 12v to EBS-.
So, aren't most (if not all) relays by definition "isolated"?
Or do I have that wrong?

M

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Jan 13 2019 10:38pm
by MJSfoto1956
For those looking for documentation of the PowerVelocity Bluetooth app Programming & Settings tabs condensed into one image, here you go:

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Jan 24 2019 8:38pm
by cheeko
Thanks Hopefully i can finally get my Controller working soon

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Feb 03 2019 10:52pm
by TorgueRPM
I noticed on the website that the controller has a built-in on/off switch. Does it have its own internal precharge circuit?

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Feb 04 2019 6:17pm
by Powervelocity.com
The schematics is simply a typical connection diagram. There is no built-in switch. I would recommend connecting a properly rated breaker on the positive end and have a BMS on the negative end. Connectors with built-in pre-charge resistors, such as XT90, work well handling sparks.
TorgueRPM wrote:
Feb 03 2019 10:52pm
I noticed on the website that the controller has a built-in on/off switch. Does it have its own internal precharge circuit?

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Feb 13 2019 2:52am
by Ebuilt
If I wanted to wire in an external dc converter to my powervelocity controller, how would I do that?

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Feb 13 2019 3:27am
by Powervelocity.com
Depending on how much current you are planning to run, there may be a few options.
I would normally connect the DC/DC ground to the battery negative or somewhere on the PCB and splice into the orange ignition wire. That allows to control the power to the controller with the ignition switch. But I don' t run any heavy loads, just lights and maybe a phone via 12->5v converter, so that works well.
Ebuilt wrote:
Feb 13 2019 2:52am
If I wanted to wire in an external dc converter to my powervelocity controller, how would I do that?

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 04 2019 6:30pm
by cheeko
Hi Guys

Instead of emailing PW with all stupid questions thought i would ask here, Has anyone used the Throttle wire rather then Bluetooth side, just wanted to see what the difference is.

Cheers.

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 05 2019 12:35am
by Powervelocity.com
Either way should work if the BT is of later version with throttle input.
cheeko wrote:
Mar 04 2019 6:30pm
Hi Guys

Instead of emailing PW with all stupid questions thought i would ask here, Has anyone used the Throttle wire rather then Bluetooth side, just wanted to see what the difference is.

Cheers.

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 05 2019 12:43am
by cheeko
Thanks PW

Yes i had ride other day and it came off the BT so i wanted to see better way i can lock it in, and thought maybe connect director to the connector so it will clip in.

Cheers
Peter

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 07 2019 6:05pm
by Powervelocity.com
A 3 pin JST connector has a notch that will lock it in the connector on the Bluetooth end. It's not perfect but it should withstand vibrations.

Have you tried those?

2019-03-07_15-02-31.jpg
2019-03-07_15-02-31.jpg (7.66 KiB) Viewed 1479 times

cheeko wrote:
Mar 05 2019 12:43am
Thanks PW

Yes i had ride other day and it came off the BT so i wanted to see better way i can lock it in, and thought maybe connect director to the connector so it will clip in.

Cheers
Peter

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 08 2019 12:46am
by cheeko
I actually cut them off because it has the plastic tab on the bottom doesn't fit on correctly.

I will Try some hot glue tonight if it keeps failing i guess ill direct solider i dont plan on removing it ever unless a error i i guess it doesn't matter if i i need to unsolder it

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 09 2019 5:40pm
by cheeko
Hi PW

Where does controller get temp from is it attached to BT module? After update dont know if i lost it or need to check wire on BT but no controller temp. No biggy ill never get it hot lol

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 09 2019 5:57pm
by TorgueRPM
I'm replacing the motor controller on a Chinese electric motorcycle with a qs260 hub motor. the Halls are connected but the motor acts as if it's being driven by a sensorless controller, with lots of cogging from takeoff. Has anyone else had any issues like this?

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 09 2019 9:08pm
by TorgueRPM
TorgueRPM wrote:
Mar 09 2019 5:57pm
I'm replacing the motor controller on a Chinese electric motorcycle with a qs260 hub motor. the Halls are connected but the motor acts as if it's being driven by a sensorless controller, with lots of cogging from takeoff. Has anyone else had any issues like this?
By cogging I mean a lot of noise and juddering

Re: 24F Silent Controller 20kw 100-150v iOS/Android- $299>

Posted: Mar 11 2019 12:11pm
by Powervelocity.com
It should be taking off quiet and smooth.
I would check that all hall sensors are operational and make sure the hall and phase combos are correct.
TorgueRPM wrote:
Mar 09 2019 9:08pm
TorgueRPM wrote:
Mar 09 2019 5:57pm
I'm replacing the motor controller on a Chinese electric motorcycle with a qs260 hub motor. the Halls are connected but the motor acts as if it's being driven by a sensorless controller, with lots of cogging from takeoff. Has anyone else had any issues like this?
By cogging I mean a lot of noise and juddering