Non KT PAS Sensor with KT Controllers

[Bikes4two]

OK, so I'm learning ebike techical stuff as much as my aged brain allows so apologies if this question is rather tedious?

I recently upgraded the display and controller on a Pendleton eSomerby to the KT-LCD5 + KT compatible controller but kept the Pendleton 12-magnet PAS and for this I set C1=2 and C14=2

All fine so far and the bike rides well enough for a bike in that price bracket - but have I optimised the LCD5 settings?

I ask this as to be honest, the nomenclature used in the LCD5 manual for the C1 parameter is beyond my understand and my setting was a guess really. It would be good if someone could give a brief explanation of the various C1 settings in the table below so that folks like me can make an informed decision.

And the same goes for the C14 parameter too which is even more gobbledegook to me than for C1.

And of course, should I have gone for a KT compatible PAS like the KT-V12L or similar, or doesn't it matter?

Finally, if one does set the incorrect value(s) for C1 and C14, how does this affect the ride.

Again, apologies for the list of questions, but I'm keen to understand these things rather than settling for a 'monkey see - monkey do' approach.

 

[vfr400]

If it's working, you have a suitable setting for C1. The first column is how many magnets in the disc behind the chainwheel. The second column is how sensitive it is. If it works, the sensitivity is correct.

C14 affects how much power you get when you set the Pedal assist levels on the LCD. The higher the setting, the more power you get in the lower levels. It just makes your start up more aggressive.

Make sure that you have the P3 set to "torque simulation" mode (=1). That's the important one that makes the bike nice to ride. What they're saying is that when you're not in "torque simulation" (current control) mode, C14 doesn’t do anything because you would always get max power in each pedal assist level. Instead you get a different max speed in each level. That's the difference between P3 =0 and P3=1.

 

[Bikes4two]

Thanks for the explanation @vfr400 - in the C1 table I can see that the waveform for the right hand columns are the inverse of the other waveform, so I'm guess that some PAS systems produce a negative pulse when the magent passes the hall sensor, or a positive pulse?

For any particular PAS system, how do you know what you have (and does it matter?) and what might be experienced if you had an incorect setting (eg. 00/01/02 rather than 05/06/07 or vice versa)?

 

[vfr400]

Most sensors work with the default settings, except the 12 magnet and double hall ones. If you stick to the cheapo 8 or ten magnet ones, you shouldn't get any problem.