Help with PAS connection...

[Paul Young]

Morning all, I've just installed a 3000w rear hub motor kit, but the PAS sensor was not included, so I sourced one thinking that it would be a simple case of plug and play, boy was I wrong. I've found the correct connector coming from the controller, easy enough, it's the only remaining connector with 3 wires, oh and the manual told me, but the problem I'm having is the wires are different colours, and the both have a male connector.


Coming from the PAS sensor from left to right, Y/ R/ B. And from the controller, from left to right, B/ W/ R.

Also, one more quick question, coming of the motor there are 2, 6 pin connectors, that I'm assuming are the hall sensors, but on the controller there is only one connection, with one connected everything works fine, but is there a reason why this is so ?


Thanks in advance guys...

 

[harrys]

I would first like to measure 5V between the red/black on the connector coming from the controller to make sure they weren't messing things up. Then I'd get the female connector and align red-red, black-black, and white to yellow, If you can't get a matching female connector (from an ebike shop?), you could just use any arbitrary pair of three pin connectors.

 

[Nealh]

You need to confirm the B is Black on the PAS wiring, if not then Yellow is the ground.
Double halls one is spare in case of damage.

 

[vfr400]

Unless you have a controller that uses current control, PAS on a 3kw bike will be useless and dangerous. Which controller do you have?

 

[Paul Young]

All is working, well kind of. The pas is intermittent, making it very jerky. Any ideas guys ?

I'm not sure on the controller mate, it's the sinewave that's included in the 3000w kit. It's only a temp solution, next payday I'm ordering the sabvoton. I just needed a quick plug and play solution in one delivery to get me to work. The summer is almost here and I miss my BBSHD fat bike...


This is the kit I'm using...

theebikemotor 3.2" TFT Display+3000W Hi Speed Electric MTB Bicycle E Bike Hub Motor Conversion kit (60V3000W, 26"): Amazon.co.uk: Sports & Outdoors

Shop theebikemotor 3.2" TFT Display+3000W Hi Speed Electric MTB Bicycle E Bike Hub Motor Conversion kit (60V3000W, 26"). Free delivery and returns on all eligible orders.

www.amazon.co.uk

 

[vfr400]

Firstly check that the gap between the magnet disc and the sensor is an even 1 mm. Secondly, check that the magnet disc isn't slipping on the shaft. lastly, there's a setting for the sensitivity of the sensor. Try turning it up, but don't do that until you've eliminated the other possibilities.

 

[Paul Young]

Thank you guys, it was exactly what you said vfr400, the magnets weren't close enough to the sensor, some hot glue and a few pieces of an old credit done the job perfectly ( for testing at least )


Actually I spoke to soon, it's fine when it's up in my work stand with no jerky behaviour at all, get out onto the road, and the jerks are back ?

 

[jeff St.Clair]

I had a problem with jerky PAS ...on a kit I bought from theebikemotor.. PAS would cut in and out with no warning and make a smooth ride impossible, I messed about with the distance between the sensor and the disc , tried the disc one way round and the other way round still jerky... Then looking at the setting on the LCD there was an option of 8 magnet disc or 12 magnets. The disc I have is is a 8 magnet but by resetting the LCD for 12 magnets the pas works fine . It does however power up if you back peddle which is fine if you know ....I keep meaning to get a 12 magnet disc and see if it improves it even more but ...if ain't broke don't fix it ...