Kelly Ebike Brushless DC Motor Controller User
’s Manual
V 3.3
Page 3
Chapter 2 Main Features and Specifications
2.1 General functions
(1) Extended fault detection and protection. The LED flashing pattern indicates the fault
sources.
(2) Monitoring battery voltage. It will stop driving if the battery voltage is too high and it will
progressively cut back motor drive power as battery voltage drops until it cuts out altogether
at the preset
“Low Battery Voltage” setting.
(3) Built-in current loop and over current protection.
(4) Configurable motor temperature protection range.
(5) Current cutback at low temperature and high temperature to protect battery and controller.
The current begins to ramp down at 90
ﹾ
Ｃcase temperature
, shutting down at 100
ﹾ
Ｃ
.
(6) The controller keeps monitoring battery recharging voltage during regenerative braking,
progressively cutting back current as battery voltage rises then cutting off regen altogether
when voltage goes too high.
(7) Maximum reverse speed is configurable to half of max forward speed.
(8) Configurable and programmable with a host computer though RS232 or USB. Provide free
GUI which can run on Windows XP/2000, Windows 7 and Vista(recommend using Kelly
standard USB to RS232 Converter).
(9) Provision of a +5 volt output to supply various kinds of sensors, including Hall effect type.
(10) 3 switch inputs which are activated by connection to Ground. Default to throttle switch,
brake switch and reversing switch.
(11) 3 analog inputs 0-5V inputs that default to throttle input, brake input and motor temperature
input.
(12) Configurable boost switch. Enables the maximum output power achievable if the switch is
turned on.
(13) Configurable economy switch. Limits the maximum current to half if the switch is turned on.
(14) Maximum reverse power is configurable to half power.
(15) Enhanced regen brake function. A novel ABS technique provides powerful and smooth
regen.
(16) Configurable 12V brake signal input, instead of motor temperature sensor.
(17) Optional joystick throttle. A bi-symmetrical 0-5V signal for both forwarding and reversing.
(18) Configurable motor over-temperature detection and protection with the recommended
thermistor KTY83-122.
(19) 3 hall position sensor inputs. Open collector, pull up provided.
(20) Optional supply voltage 8V-30V.
Caution!
Regeneration has braking effect but does not replace the function of a mechanical
brake. A mechanical brake is required to stop your vehicle. Regen IS NOT a safety feature!
Controller may stop regen, without warning, to protect itself or the battery(it won
’t protect you!).