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11 

 

Power Assistance Sensor Settings 

1.

 

Setting the 

Direction

 of the Power Assist Sensor (PAS) 

PAS

 refers to the power assist sensor settings.  The first setting in this menu chooses the 

direction of rotation for the pedal sensor disk.  “

run-F

” means 

clockwise

, while “

run-b

” means 

anti-clockwise

.  Press 

UP

 or 

DOWN

 to select 

F or b

, and press 

MODE

 to confirm and enter the 

setting.  The default direction is “run-F” (When the pedals are turned forwards, the motor runs).  
It can be useful to change this setting if the Sensor Disk has been mistakenly reversed. 

 

 

 

Direction of PAS Sensor Settings 

 

2.

 

Adjusting the 

Sensitivity

 of the PAS sensor 

SCN

 shows the setting for the sensitivity of the pedal sensor.  The values that may be used are 

from 2 (strongest) to 9 (weakest).  The default value is 2 and this should pick up the signal from 
the sensor perfectly, but if less sensitivity is preferred choose a higher number.  

 

Press 

UP

 or 

DOWN

 to change the pedal sensor sensitivity value, and then press 

MODE

 to confirm 

your choice.   

 
 
 
 

The Sensitivity of PAS Settings 

 

Once you have confirmed the SCN, pedal sensor sensitivity, you then need to confirm or change 
the number of magnets (N) in the PAS sensor plate (the black disk behind the pedal chain wheel).   

3.

 

Number of magnets

 on PAS plate 

N

 refers to the number of magnets found on the PAS disk. Press 

UP or DOWN 

to select the 

correct quantity corresponding  to your PAS plate.  The default value is 6 but you may need to 
change this should you ever use a replacement plate. 

 

 

Number of PAS Magnets 

 

 

 

Summary of Contents for KD21C

Page 1: ...nts sections 1 Description Page 2 2 Daily User Guide User Level Page 4 3 Configuration Settings wheel size specific Installer Level Page 8 4 System Settings control system specific Advanced Level Page...

Page 2: ...t 30mA Off leakage current 1uA Operating temperature 20 60 Storage temperature 30 70 Appearance and Size Materials and Colour KD21C product s shell and fixing bracket are made of ABS and Nylon The LCD...

Page 3: ...first set up and then tweak settings should the need arise explaining Error Codes Parameter Settings for wheel size speed limiting battery level tweaking PAS relative level adjustments controller cur...

Page 4: ...ill switch on and light up if you ve remembered to switch on your battery first Hold down the MODE button again and the display switches off The display will also switch itself off if there s been no...

Page 5: ...reverts to as it was Walk Assist Mode You should not be astride the bike when using walk assist Front Light Press UP for 2 seconds to turn on the front light of your bike and also the backlight of th...

Page 6: ...ging the settings The display should arrive pre configured and working properly for your bike If you do need to change the way the display controls your bike then please do so sparingly making a recor...

Page 7: ...ettings bL indicates the contrast setting for the backlight Level 1 gives low brightness and Level 3 is high brightness Press UP or DOWN to modify the backlight brightness Press MODE to confirm and ex...

Page 8: ...ettings LS shows the setting for the maximum assisted speed of the bike When the bike speed is faster than the limit speed the display will ask the controller to gradually cut the motor power Limit sp...

Page 9: ...er general settings and then hold both UP and DOWN again to enter the Advanced Setting items selection page Press UP or DOWN to choose a setting and then press MODE to enter its individual value page...

Page 10: ...AS Mode Select Interface 2 PAS Ratio settings Each level of PAS can be set as a percentage value We recommend using 5 levels of assistance with the values 50 61 73 85 and 96 Use UP and DOWN to enter a...

Page 11: ...sensitivity of the pedal sensor The values that may be used are from 2 strongest to 9 weakest The default value is 2 and this should pick up the signal from the sensor perfectly but if less sensitivit...

Page 12: ...previous menu The SPS default value is 1 On some occasions a value 8 is also valid for some Juicy Bike motors Speed Sensor Selection Throttle Function It s possible to have a throttle attached to your...

Page 13: ...nsequence Normally though 3 or 6 secs is a reasonable setting to use Delay time of battery power interface 1 Max speed limited MAX SPD refers to the max speed limit settings Press UP or DOWN to set th...

Page 14: ...eed settings Interface of PAS push Walk Assist Speed Setting Adjust the walk assist speed by pressing UP or DOWN to adjust from 20 to 35 and then press MODE to confirm The default value is 25 Walk spe...

Page 15: ...hoose whether to enable the password Power on Password Screen Power on Password Enable Press UP or DOWN to select Y or N and press MODE to confirm The default is N Power on Password Enable Screen Powe...

Page 16: ...D Display is only for use with a compatible Juicy Bike model Always switch off all power at the main bike battery before disconnecting or re connecting the LCD Display Take particular care to line up...

Page 17: ...bnormality 30 Communication Abnormality Attached list 2 Personal Parameter settings Attached list 3 Power assist table No Settings item Screen display 1 Battery Power Bar Settings 2 Power assistant le...

Page 18: ...ght 3 Unit 4 Voltage 5 Wheel diameter 6 Speed limit 7 Controller over current cut 8 Backward 9 Forward 10 Sensitivity of PAS 11 Speed sensor 12 Power delayed time 13 Throttle power assist walk 14 Thro...

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