Chapter 1 Introduction
1.1 Overview
This manual introduces the ebike brushless DC motor controllers‟ features, their
installation and their maintenance. Read the manual carefully and thoroughly before using the
controller. If you have any questions, please contact the support center of Controls.
‟s programmable DMKEB motor controllers provide efficient, smooth and quiet controls for
electric bicycles, electric motorcycles, scooters, etc. It outputs high taking off current, and
strictly limit battery current. It can work with relative small battery, but provide good
acceleration and hill climbing. It uses high power MOSFET‟s and, PWM to achieve efficiencies
of up to 99%.
In most cases, Powerful microprocessor brings in comprehensive and precise control to
the controllers. It also allows users to adjust parameters, conduct tests, and
obtain diagnostic information quickly and easily.
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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 ℃ case temperature, shutting down at 100 ℃.
(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 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.
