ATO DMKEB Series User manual

DMKEB Brushless Motor
Controller User’s Manual
Devices Supported
DMKEB48200X DMKEB48201X
DMKEB48300X DMKEB48301X
DMKEB48400X DMKEB48401X
DMKEB48600 DMKEB48601
DMKEB72300X DMKEB72301X
DMKEB72450X DMKEB72451X
DMKEB72600X DMKEB72601X
DMKEB72800X DMKEB72801X
DMKEB72100 DMKEB72101
DMKEB72120E DMKEB72121E
DMKEB84600X DMKEB84601X
DMKEB84800X DMKEB84801X
DMKEB84120E DMKEB84121E

Chapter 1 Introduction ....................................................................................................... 1
1.1 Overview................................................................................................................. 1
Chapter 2 Main Features and Specifications................................................................. 1
2.1 General functions.................................................................................................. 1
2.2 Features.................................................................................................................. 3
2.3 Specifications......................................................................................................... 4
2.4 Models .................................................................................................................... 4
Chapter 3 Wiring and Installation..................................................................................... 5
3.1 Mounting the Controller........................................................................................ 5
3.2 Connections ........................................................................................................... 6
3.2.1 Front Panel of DMKEB Motor Controller: .................................................................... 6
3.2.2 Standard Wiring of DMKEB Motor Controller ............................................................. 9
3.2.3 Communication Port ...................................................................................................... 10
3.3 Installation Check List .........................................................................................10
Chapter 4 Maintenance....................................................................................................11
4.1 Cleaning................................................................................................................ 11
4.2 Configuration ....................................................................................................... 11
Table 1: LED CODES....................................................................................................... 12
Contents
DMKEB Ebike Brushless DC Motor Controller User’s Manual

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.
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(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.Boost and Economy used the same pin as J2-6(brake-AN).Needless to say,you may not
use J2-6(brake-AN) as brake analog regen mode if you want to use Boost or Economy
function.Boost or Economy can’t be enabled at the same time in the user program.
(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. If
software version is 0406 or above,joystick can can be enabled or disabled in the user
program now.
(18) Configurable motor over-temperature detection and protection with the recommended
thermistor KTY84-130 or KTY83-122.
(19) 3 hall position sensor inputs. Open collector, pull up provided.
(20) Optional supply voltage 8V-30V.
(21)Cruise control.Can not be activated in reversing direction.If software version is 0406
or above,cruise control can be enabled or disabled in the user program now.If you hold
throttle at certain position about 3-4 seconds,the controller will get into Cruise control.
DMKEB Ebike Brushless DC Motor Controller User’s Manual
(22) CAN Bus is not supported in DMKEB controller.
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!).
(11) 3 analog inputs 0-5V inputs that default to throttle input, brake input and motor temperature
input.
Caution :
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2.2 Features
• Specially designed for electric bicycle and scooter.
• Intelligence with powerful microprocessor.
• Synchronous rectification, ultra low drop, fast PWM to achieve very high efficiency.
• Electronic reversing.
• Voltage monitoring on 3 motor phases, bus, and power supply.
• Voltage monitoring on voltage source 12V and 5V.
• Current sense on all 3 motor phases.
• Current control loop.
• Hardware over current protection.
• Hardware over voltage protection.
• Support torque mode, speed mode, and balanced mode operation.
• Configurable limit for motor current and battery current.
• Battery current limiting available, doesn’t affect taking off performance.
• More startup current ,can get more startup speed.
• Low EMC.
• LED fault code.
• Battery protection: current cutback, warning and shutdown at configurable high and low battery
voltage.
• Rugged aluminum housing for maximum heat dissipation and harsh environment.
• Rugged high current terminals, and rugged aviation connectors for small signal.
• Thermal protection: current cut back, warning and shutdown at high temperature.
• Configurable 60 degree or 120 degree hall position sensors.
• Support motors with any number of poles.
• Up to 40,000 electric RPM standard. Optional high speed 70,000 ERPM, and ultra high speed
100,000 ERPM. (Electric RPM = mechanical RPM * motor pole pairs).
DMKEB Ebike Brushless DC Motor Controller User’s Manual
• Brake switch is used to start regen.
• 0-5V brake signal is used to command regen current.
• Support three modes of regenerative braking: brake switch regen, release throttle regen, 0-5V
analog signal variable regen.
•Configurable high pedal protection: the controller will not work if high throttle is detected at
power on.
•Current multiplication: Take less current from battery, output more current to motor.
•Easy installation: 3-wire potentiometer will work.
•Standard PC/Laptop computer is used to do programming. No special tools needed.
•User program provided. Easy to use. No cost to customers.
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DMKEB Ebike Brushless DC Motor Controller User’s Manual
2.3 Specifications
• Frequency of Operation: 16.6kHz.
• Standby Battery Current: < 0.5mA.
• 5V Sensor Supply Current: 40mA.
• Controller supply voltage range, PWR, 18V to 90V.
• Supply Current, PWR, 150mA.
• Configurable battery voltage range, B+. Max operating range: 18V to 1.25*Nominal.
• Standard Throttle Input: 0-5 Volts(3-wire resistive pot), 1-4 Volts(hall active throttle).
• Analog Brake and Throttle Input: 0-5 Volts. Producing 0-5V signal with 3-wire pot.
• Full Power Operating Temperature Range: 0℃ to 50℃(controller case temperature).
• Operating Temperature Range: -30℃ to 90℃, 100℃shutdown(controller case temperature).
• Peak Phase Current, 10 seconds: 150A-550A, depending on the model.
• Continuous Phase Current Limit: 60A-200A, depending on the model.
• Maximum Battery Current: Configurable
2.4 Models
The naming regulations of the DMKEB motor controller model:
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Chapter 3 Wiring and Installation
3.1 Mounting the Controller
The controller can be oriented in any position which should be as clean and dry as possible,
if necessary, shielded with a cover to protect it from water and contaminants.
To ensure full rated output power, the controller should be fastened to a clean, flat metal
surface with four screws. Applying silicon grease or some other thermal conductive material to
contact surface will enhance thermal performance.
Proper heat sinking and airflow are vital to achieve the full power capability of the controller.
The case outline and mounting holes’ dimensions are shown in Figure 1 and 2.
Height: 62 millimeters
Figure 1: DMKEB/ DMKEB-X mounting holes’ dimensions (dimensions in millimeters)
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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Height: 62 millimeters
Figure 2: DMKEB-E mounting holes’ dimensions (dimensions in millimeters)
3.2 Connections
3.2.1 Front Panel of DMKEB Motor Controller:
Five metal bars and a 14pin rugged connector are provided for connecting to the battery,
motor and control signals in the front of the controller shown as Figure 3.
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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Figure 3: Front panel of DMKEB motor controller
B+: battery positive
B-: battery negative
A: Output U/1/A phase
B: Output V/2/B phase
C: Output W/3/C phase
Figure 4: The connecting diagram of J2
J2 Pin Definition
1. PWR: Controller power supply
2. RTN: Signal return, or power supply ground
3. RTN: Signal return
4. 12V high-level brake and motor temperature
input
5. Throttle analog input, 0-5V
6. Brake analog input, 0-5V
7. 5V: 5V supply output, <40mA 8. Micro_SW:
Throttle switch input.
9. Reversing switch input
10. Brake switch input
11. Hall phase C 12.Hall phase B
13. Hall phase A
14. RTN: Signal return
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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Caution:
•Do not apply power until you are certain the controller wiring is correct and has been
double checked. Wiring faults will damage the controller.
•Ensure that the B- wiring is securely and properly connected before applying power.
•The preferred connection of the system contactor or circuit breaker is in series with the
B+ line.
•All contactors or circuit breakers in the B+ line must have precharge resistors across
their contacts. Lack of even one of these precharge resistors may severely damage the
controller at switch-on.
Notes:
1. All RTN pins are internally connected. RTN is internally connected to B-.
2. Switch to ground is active. Open switch is inactive
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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3.2.2 Standard Wiring of DMKEB Motor Controller
Figure 5: DMKEB controller standard wiring
(Battery voltage can be used for controller supply)
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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Figure 6: standard RS232 interface
3.3 Installation Check List
Before operating the vehicle, complete the following checkout procedures. Use LED code
as a reference as listed in Table 1.
Caution:
•Put the vehicle up on blocks to get the drive wheels off the ground before beginning
these tests.
•Do not allow anyone to stand directly in front of or behind the vehicle during the
checkout.
•Make sure the PWR switch and the brake is off • Use well-insulated tools.
•Make sure the wire is connected correctly
•Turn the PWR switch on. The Green LED stay on steadily and Red LED turns off when the
controller operates normally. If this does not happen, check continuity of the PWR and
controller ground.
•The fault code will be detected automatically at restart.
•With the brake switch open, select a direction and operate the throttle. The motor should
spin in the selected direction. Verify wiring or voltage and the fuse if it does not. The motor
should run faster with increasing throttle. If not, refer to the Table 1 LED code, and correct
the fault as determined by the fault code.
•Take the vehicle off the blocks and drive it in a clear area. It should have smooth
acceleration and good top speed.
A RS232 port of controller is provided to communicate with host computer for calibration
and configuration.
3.2.3 Communication Port
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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4.1 Cleaning
Although the controller requires virtually no maintenance after properly installation, the
following minor maintenance is recommended in certain applications.
•Remove power by disconnecting the battery, starting with battery positive.
•Discharge the capacitors in the controller by connecting a load (such as a contactor coil or a
horn) across the controller’s B+ and B- terminals.
•Remove any dirt or corrosion from the bus bar area. The controller should be wiped down with
a moist rag. Make sure that the controller is dry before reconnecting the battery.
•Make sure the connections to the bus bars, if fitted, are tight. To avoid physically stressing the
bus bars use two, well-insulated wrenches.
4.2 Configuration
You can configure the controller with a host computer through either an RS232 or USB port.
•Disconnect motor wiring from controller.
•Do not connect B+, throttle and so on. The controller may display fault code in some
conditions, but it doesn't affect programming or configuration.
Caution:
•Make certain that the motor is disconnected before trying to run the Configuration
Software!
•Configuration software will be regularly updated and published on the website.
Please Update your Configuration Software regularly. You must uninstall the older
version before updating.
•Motor pole setting is nothing to do with performance in DMKEB controller, so motor
pole setting is grayed in DMKEB user program.This setting is only used for reading
eRpm of motor via CAN Bus.But DMKEB controller can’t support CAN Bus at all.
DMKEB Ebike Brushless DC Motor Controller User’s Manual
Chapter 4 Maintenance
There are no user-serviceable parts inside the controllers. Do not attempt to open the
controller as this will void your warranty. However, periodic, exterior cleaning of the controller
should be carried out.
The controller is a high powered device. When working with any battery powered vehicle,
proper safety precautions should be taken that include, but are not limited to, proper training,
wearing eye protection, avoidance of loose clothing, hair and jewelry. Always use insulated
tools.
DMKEB Ebike Brushless DC Motor Controller User’s Manual
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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 volts 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 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
released.
2. Set throttle model as "Hall Active" throttle in
DMKEB Ebike Brushless DC Motor Controller User’s Manual
Table 1: 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 about a
warranty repair.
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3,1 ¤¤¤ ¤Frequent reset
1. The controller will stop driving when detects too
many resets.
2. Mostly because of B- or return wiring. Use the
heavier and cleaner return wires. For dual
controllers, bond B- of both controllers together
with a heavy cable or copper strip.
3. May be caused by over-current. Set max current
to be lower.
4. A restart will clear the fault.
5. Please contact if it happens repeatedly.
3,2 ¤¤¤ ¤¤ Internal reset
May be caused by some transient fault condition like
a temporary over-current, momentarily high or low
battery voltage. This can happen during normal
operation.
3,3 ¤¤¤ ¤¤¤ Hall throttle is
open or short-
circuit
When the throttle is repaired, a restart will clear the
fault.
3,4 ¤¤¤ ¤¤¤¤ Non-zero throttle
on direction
change
Controller won’t allow a direction change unless the
throttle or speed is at zero. Fault clears when throttle
is released.
4,1 ¤¤¤¤ ¤Regen or Start-up
over-voltage
Motor drive is disabled if an over-voltage is
detected at start-up or during regen. The voltage
threshold detection level is set during
configuration.
4, 2¤¤¤¤ ¤¤ Hall sensor error
1. Incorrect or loose wiring or a damaged hall
sensor.
2. Also be caused by incorrect hall angle
configuration (60 degree or 120 degree).
4, 3¤¤¤¤ ¤¤¤ Motor over-
temperature
Motor temperature has exceeded the configured
maximum. The controller will shut down until the
motor temperature cools down.
4, 4¤¤¤¤
¤¤¤¤ Motor locked rotor
When in locked rotor condition, the max output
phase current of the motor will be limited to 90% of
previous current. Once this problem disappears, the
fault will clear and the max output phase current will
return to normal.
The Red LED flashes once at power on as a confidence check and then normally stays Off.
“1, 2” means the Red flashes once and after a second pause, flashes twice. The time between
two flashes is 0.5 second. The pause time between multiple flash code groups is two seconds.
DMKEB Ebike Brushless DC Motor Controller User’s Manual
GUI if you use that throttle type.
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