Honeywell 1gt101dc hall sensor

[MarioVelotta]

I have a customer that wants to use this sensor for his setup. It looks like there are many ways to setup a hall input to the MS but I don't know which one to use for the Honeywell 1gt101dc sensor.

Here are my options and will be working with a v2.2 board http://www.msextra.com/doc/ms1extra/MS_ ... l.htm#hall

Anybody want to share some info

[MarioVelotta]

I used google, found it

[UKLuke72]

any hints/tips mario? my trigger wheel is only around 5mm thick, the teeth are 6mm wide and 6mm deep which doesnt meet the specs of this sensor, what do you reckon?

thanks

[MarioVelotta]

Find a different trigger wheel that matches your sensor

[UKLuke72]

the honeywell sensor has very similar specs to the hall DIYA sells http://www.diyautotune.com/catalog/hall ... p-479.html
and yet works faultlessly with their 3.175mm thick and 6mm deep so i think i'll be alright
http://www.diyautotune.com/catalog/34-3 ... p-181.html

[MarioVelotta]

Are you using an EDIS trigger wheel?

[andy198712]

Maybe this will work with my equaliser pulley that is drilled the 6mm holes as a trigger....

[UKLuke72]

Are you using an EDIS trigger wheel?

Just a generic 36-1 steel trigger wheel mario.

[warp]

I've used the Honeywell 1gt101dc and it's okay, but not my favorite.
Be carefull when selecting trigger wheel and you will be fine. I reduced the number of teeth from 36-1 to 12-1 as the adaptive filter in the sensor itself would sometimes skip a space between two teeths at high rpm.
It will still work with a 36-1 trigger wheel just be carefull with the set-up (gap, angle, mounting etc.)

If you experience weak input signal at the processor at high rpm you can reduce or remove c12 and c11 to avoid the very aggressive input filter that MS has built in.

[UKLuke72]

thanks for that warp, i'll bear it in mind!

[SPG guy]

I have used both a genuine honeywell and the diy sensor and cant tell the difference.
That said i have been struggling to get the engine to run and affter being advised by a large well known ecu manufacturer that this sensor and 3mm sensor wheel would be a perfect option they are now telling me that maybe i should look into other solutions.
problem i have is that the ecu misses one tooth on the crank wheel while trying to run.
Cant say it's the sensor or the wheel or ecu but just worth looking into.
I was told that the sensor will work no problems with just 2mm thick sensor wheels as they have in most oem setups and this is the case for my setup just that it gives odd running problems.
Hope this doesnt sound like i'm trying to scare you away from it as i really like the sensor and diyautotune have tested their version with a 36-1 but i would stay to a lower res wheel to work better.

[UKLuke72]

lower res as in 12-1 or have you had success with 36-1?

[warp]

@UKLuke72: I've had success with 36-1 using the Honeywell sensor (like many others) but you need to be careful when you select/fabricate the trigger wheel.
50/50 ratio between tooth-width and space-width is not ideal for this sensor. I would go for something like 25/75 ratio between tooth-width and space-width. The reason is the internal filter in the sensor is adaptive and will start missing some of the spaces between teeth at high rpm if the spaces are too narrow. It is also very critical that the trigger wheel runs completely straight and the gap between sensor and wheel is constant. Otherwise the filter in the sensor will constantly try to compensate which can/will result in skipped spaces when the rpm rises.
Next, it is a good idear to verify amplitude of the trigger signal at the processor at high rpm (above your red line) as MS has a very aggressive filter built in. It's a pretty common problem to loose trigger signal when using a hall sensor and a trigger wheel with many teeth with MS. The reason for the aggressive filter in MS is that the input circuit is designed to trigger of the ignition coil which produces a very noisy signal and much less pulses then a 36-1 wheel. The solution is to modify the filter to fit a hall sensor instead. This can be done by removing or reducing the size of C11 and C12 (for PCB v2.2).

In short, yes a 36-1 trigger wheel will work with the Honeywell sensor but the things mentioned above should be considered if you want a robust trigger set-up.

@SPG guy: I'll bet it's not the sensor from what you describe. I think you need the debug your input circuit with an oscilloscope and check your wheel/sensor set-up again to make sure its running completely straight and the gap is 100% constant.

[UKLuke72]

Brilliant info Warp. I'll take notes

[Chris181]

50/50 ratio between tooth-width and space-width is not ideal for this sensor. I would go for something like 25/75 ratio between tooth-width and space-width. ...

Hi,
With EDIS wheel 36-1, I think is not a good idea to put a Hall sensor ?