Kelly KHB High Power Brushless Motor Controller User
’
s Manual
V 4.5
Page 15
Table 1: LED CODES
Green LED Codes
LED Code
Explanation
Solution
Green Off
No power or
switched off
1. Check if all wires are correct.
2. Check fuse and power supply.
Green On
Normal operation
That’s great! You got solution!
Green & Red are both
On
1. Software still upgrading.
2. Supply voltage too low or battery too high
3. The controller is damaged. Contact Kelly about a
warranty repair.
Red LED Codes
LED Code
Explanation
Solution
1,2
¤
¤¤
Over voltage error
1. Battery voltage is too high for the controller.
Check battery volts and configuration.
2. Regeneration over-voltage. Controller will have
cut back or stopped regen.
3. This only accurate to
±
2% upon Overvoltage
setting.
1,3
¤
¤¤¤
Low voltage error
1. The controller will clear after 5 seconds if battery
volts returns to normal.
2. Check battery volts & recharge if required.
1,4
¤
¤¤¤¤
Over temperature
warning
1. Controller case temperature is above 90
℃
.
Current will be limited. Reduce controller loading
or switch Off until controller cools down.
2. Clean or improve heatsink or fan.
2,1
¤¤
¤
Motor did not start
Motor did not reach 25 electrical RPM within 2
seconds of start-up. Hall sensor or phase wiring
problem.
2,2
¤¤
¤¤
Internal voltage fault
1. Measure that B+ & PWR are correct when
measured to B- or RTN.
2. There may be excessive load on the +5V supply
caused by too low a value of Regen or throttle
potentiometers or incorrect wiring.
3. Controller is damaged. Contact Kelly about a
warranty repair.
2,3
¤¤
¤¤¤
Over temperature
The controller temperature has exceeded 100
℃
. The
controller will be stopped but will restart when
temperature falls below 80
℃
.
2,4
¤¤
¤¤¤¤
Throttle error at
power-up
1. Throttle signal is higher than the preset ‘dead
zone’ at Power On. Fault clears when throttle is
