February 26, 20215 yr Hi, Iv got a KT 45amp controller. just want to confirm that diffrent PAS levels have different current percentages so if I use a throttle is it the same as PAS level 5 which is 100% current. because the max continuous amp of my battery is 30Amps
February 26, 20215 yr Hi, I'm still learning but looked into throttles when I got my KT controller, more experienced folk will be along soon. There are several settings in the KT controller that let you change how it behaves, these are in the P and C menus (search the forum for guides if you've not used them before) C4 is the throttle setting, set C4=4 and the throttle will match PAS level (so PAS 1 = throttle is restricted to level 1, PAS 5 = max throttle). You can also set the max power for your controller, in your case you might want to set it to 30A to match the battery, or just avoid using PAS level 5.
February 26, 20215 yr STOP !!! Ahmed you need to alter C5 current setting other wise you will shag the battery out, at 45a it will try and draw that from the battery and the cells/interconnectors will get very hot and could even short circuit. Short circuit means flames = fire and exploding battery. C5 needs setting so it doesn't exceed 30a current draw 25a would be safer. KT's use two different current reduction rates (programming) you will have to know which one yours uses. If yours uses the older programming then you can only reduce current by -5a to 40a which is very unsafe and unwise to use the bike. If you have the latter programming then C5/03 will reduce current by 50% to 22.5a draw or C5/04 will reduce current by 33.5% to 29.25a As for PAS P3/1 is current control. Approx. PAS current draw. PAS1. 13%. PAS2. 20%. PAS3. 33%. PAS4. 50%. PAS5. 100% as is throttle. Edited February 26, 20215 yr by Nealh
February 26, 20215 yr Hi, Iv got a KT 45amp controller. just want to confirm that diffrent PAS levels have different current percentages so if I use a throttle is it the same as PAS level 5 which is 100% current. because the max continuous amp of my battery is 30Amps That depends on setting P3. P3=1 is current control. P3= 0 is speed control. You want P3=1. The throttle can be a bit weird with P3=1. I think there are different software versions. I think the most common is that you get fully independent proportional speed control as long as you don't pedal, but as soon as you pedal, it becomes like a switch giving maximum power. You'll have to try it to see what it does. I think it works proportionally at all times under P3=0, but then the PAS gives full power, which is worse. Edited February 26, 20215 yr by vfr400
February 26, 20215 yr Author STOP !!! Ahmed you need to alter C5 current setting other wise you will shag the battery out, at 45a it will try and draw that from the battery and the cells/interconnectors will get very hot and could even short circuit. Short circuit means flames = fire and exploding battery. C5 needs setting so it doesn't exceed 30a current draw 25a would be safer. KT's use two different current reduction rates (programming) you will have to know which one yours uses. If yours uses the older programming then you can only reduce current by -5a to 40a which is very unsafe and unwise to use the bike. If you have the latter programming then C5/03 will reduce current by 50% to 22.5a draw or C5/04 will reduce current by 33.5% to 29.25a As for PAS P3/1 is current control. Approx. PAS current draw. PAS1. 13%. PAS2. 20%. PAS3. 33%. PAS4. 50%. PAS5. 100% as is throttle. I think mines used the latter programing, but how would I be sure it does?
February 26, 20215 yr I think mines used the latter programing, but how would I be sure it does? The LCD should display watts. Current = watts/volts.
February 26, 20215 yr Version number on the display or any instructions with said display. Set P5 /03 and see what the max watts are, divide that as vfr mentions by the battery voltage and hopefully it will be about 22.5a max or and inline watt meter.
February 27, 20215 yr Author Version number on the display or any instructions with said display. Set P5 /03 and see what the max watts are, divide that as vfr mentions by the battery voltage and hopefully it will be about 22.5a max or and inline watt meter. I set it to 30 amps and its giving me around 1400 watts on the lcd, would 22.5 be enough for the 1500W motor? I too am abit on the heavy side at 93 kgs Edited February 27, 20215 yr by Ahmed55555
February 27, 20215 yr No if you want to utilise the power, the battery is underrated for the controller that's for sure if 30a is the continuous rating.
February 27, 20215 yr Author No if you want to utilise the power, the battery is underrated for the controller that's for sure if 30a is the continuous rating. I set the the max output to 30amps on the controller, the C5 setting. most batteries here in the uk have low continuous amps, best ones with 50amps or more are found on aliexpress or dhgate
February 28, 20215 yr You usually have to go bespoke and get decent cells, there are two or three UK battery makers.
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