BAFANG DP E12.CAN User manual

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BF-UM-C-DP E12-EN November 2019
USER MANUAL FOR DISPLAY
CONTENT
7.1 Important Notice 
7.2 Introduction of Display 2
7.3 Product Description 3
7.3.1 Specifications 3
7.3.2 Functions Overview 3
7.4 Display 3
7.5 Key Definition 3
7.6 Normal Operation 4
7.6.1 Switching the System ON/OFF 4
7.6.2 Selection of Support Levels 4
7.6.3 Headlights / backlighting 4
7.6.4 Walk Assistance 4
7.6.5 Battery Capacity Indication 5
7.6.6 Bluetooth Function 5
7.6.7 USB Charge Function 5
7.7 Error Code Definition 6
7 USER MANUAL FOR
DP E12.CAN

2BF-UM-C-DP E12-EN November 2019
7.2 INTRODUCTION OF DISPLAY
• Model: DP E12.CAN BUS
• The housing material is PC1414, the indica-
tor is blue LED, as following:
• The label marking is as follows:
Note: Please keep the QR code label attached
to the display cable. The information from the
Label is used for a later possible software
update.
7.1 IMPORTANT NOTICE
• If the error information from the display
cannot be corrected according to the inst-
ructions, please contact your retailer.
• The product is designed to be waterproof. It
is highly recommended to avoid submerging
the display under water.
• Do not clean the display with a steam jet,
high-pressure cleaner or water hose.
• Please use this product with care.
• Do not use thinners or other solvents to
clean the display. Such substances can
damage the surfaces.
• Warranty is not included due to wear and
normal use and aging.

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BF-UM-C-DP E12-EN November 2019
USER MANUAL FOR DISPLAY
7.3 PRODUCT DESCRIPTION
7.3.1 Specifications
• Operating temperature: -20℃~45℃
• Storage temperature: -20℃~50℃
• Waterproof: IP65
• Storage room Humidity: 30%-70% RH
7.3.2 Functional Overview
• Battery capacity indicator
• Indication of performance support
• Walk assistance
• Control and indication for the headlight
• Indication for error messages
• USB port for charging (5V and 500mA)
• Light sensation function. Turn on/off head-
light automatically according to ambient
brightness.
• Indication for the range. (Note: this function
works with APP via BLE)).
• Bluetooth function.(the display can connect
to the mobile through Bafang Go APP)
7.4 DISPLAY
2
4
3
1
1Bluetooth indicate
2Support level and walk assistance indicate
3Light sensor for headlight
4Battery capacity LED indicator
7.5 KEY DEFINITION
System On/Off
Up
Down

4BF-UM-C-DP E12-EN November 2019
7.6 NORMAL OPERATION
7.6.1 Switching the System ON/OFF
Press and hold (>2S) on the display to turn on the system.
Press and hold (>2S) again to turn off the system.
7.6.2 Selection of Support Levels
When the display is turned on, press the or (<0.5S) button to switch to the support level, the
lowest level is 1, the highest level is 4. When the system is switched on, the support level starts in
level 1. There is no support at level 0.
7.6.3 Headlights / backlighting
Hold the (>2S) button,level and battery indication will turn dimmed and the controller turn on the
lights.
Hold the (>2S) button again, level and battery indication will turn brighter and the controller turn
off the lights. (If the display is turned on in a dark environment, the display backlight/ headlight will
be turned on automatically. If the display backlight/headlight are turned off manually, they also need
to be turned on manually afterwards)
7.6.4 Walk Assistance
The Walk assistance can only be activated with a standing pedelec.
Activation: Briefly press continuously until to level 0. At this point, briefly press again and the
indicator of the highest level will start to flash, then press and hold, the level indicator will flash
successively from 1st to 4th. Then the walk assistance mode is activated and the pedelec moves
approx. 6 km/h.

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BF-UM-C-DP E12-EN November 2019
USER MANUAL FOR DISPLAY
After releasing the button, the motor
stops automatically. The Level indicators stop
flash and the level 4 indicator starts to flash.
If no any operation is happened in 5 second,
the level indicator will be automatically
switched to level 0.
7.6.5 Battery Capacity Indication
The battery capacity is indicated with 5 lev-
els. When the lowest level indicator flashes
that means battery needs to charge. The
battery capacity is shown as follows:
LED indication definition
(from down to up) Capacity Range
5 80%-100%
4 60%-80%
3 40%-60%
2 20%-40%
1 5%-20%
1 flashing <5%
7.6.6 Bluetooth function
This display can works with APP (BAFANG
GO) via Bluetooth, all information can be
displayed on the smart phone, such as bikes,
battery, sensor, controller and HMI.
When the display connect with smart phone
via Bluetooth successfully, the Bluetooth
indicator will flash.
7.6.7 USB Charge Function
If an external USB device is connected to the
display, the device will be charged.
The maximum charging voltage is 5V and
the maximum charging current is 500mA.

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7.7 ERROR CODE DEFINITION
The display can show the errors of a pedelec. When the fault is detected, the error
code will be displayed through the level indicator in flashing. Level 1 indicates the
tens digit of an error code while level 2 indicates the units digit. For example:
1) Error code 04
The LED indicator for level 1 does not light, and level 2 flickers for 4 times. After 1 second pause, repeat the pattern.
2) Error code 11
The level 1 flickers one time, then level 2 flickers one time. After 1 second pause, repeat the pattern.
Note: Please read carefully the description of the error code. When the error code appears, please first restart the
system. If the problem is not eliminated, please contact your dealer or technical personnel.
Error Declaration Troubleshooting
04 The throttle is not back in its correct
position.
Check the throttle can adjust back into its
correct position, if the situation does not
improve, please change to a new throttle.(only
with this function)
05 The throttle has fault.
1. Check the connector of throttle whether
they are correctly connected.
2. Disconnect the throttle, If the problem still
occurs, please contact your retailer.
(only with this function)
07 Overvoltage protection
1. Remove the battery.
2. Re-Insert the battery.
3. If the problem persists, please contact your
retailer.
08 Error with the hall sensor signal
inside the motor Please contact your retailer.
09 Error with the Engine phase’s Please contact your retailer.
10
The temperature inside the engine
has reached its maximum protection
value
1. Turn off the system and allow the Pedelec
to cool down.
2. If the problem persists, please contact your
retailer.
11 The temperature sensor inside the
motor has an error Please contact your retailer.
12 Error with the current sensor in the
controller Please contact your retailer.
Level 1
Level 2

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BF-UM-C-DP E12-EN November 2019
USER MANUAL FOR DISPLAY
Error Declaration Troubleshooting
13 Error with the temperature sensor
inside of the battery Please contact your retailer.
14
The protection temperature inside
the controller has reached its maxi-
mum protection value
1. Turn off the system and let the pedelec cool
down.
2. If the problem persists, please contact your
retailer.
15 Error with the temperature sensor
inside the controller Please contact your retailer.
21 Speed sensor Error
1. Restart the system
2. Check that the magnet attached to the
spoke is aligned with the speed sensor and
that the distance is between 10 mm and 20
mm.
3. Check that the speed sensor connector is
connected correctly.
4. If the error persists, please contact your
retailer.
25 Torque signal Error
1. Check that all connections are connected
correctly.
2. If the error persists, please contact your
retailer.
26 Speed signal of the torque sensor has
an error
1.Check the connector from the speed sensor
to make sure it is connected correctly.
2.Check the speed sensor for signs of damage.
3.If the problem persists, please contact your
retailer.
27 Overcurrent from controller Please contact your retailer.
30 Communication problem
1. Check all connections are correctly con-
nected.
2. If the error persists, please contact your
retailer.

8BF-UM-C-DP E12-EN November 2019
Error Declaration Troubleshooting
33 Brake signal has an error
(If brake sensors are fitted)
1. Check all connectors.
2. If the error continues to occur, please con-
tact your retailer.
35 Detection circuit for 15V has an error Please contact your retailer.
36 Detection circuit on the keypad has
an error Please contact your retailer.
37 WDT circuit is faulty Please contact your retailer.
41 Total voltage from the battery is too
high Please contact your retailer.
42 Total voltage from the battery is too
low Please contact your retailer.
43 Total power from the battery cells is
too high Please contact your retailer.
44 Voltage of the single cell is too high Please contact your retailer.
45 Temperature from the battery is too
high Please contact your retailer.
46 The temperature of the battery is
too low Please contact your retailer.
47 SOC of the battery is too high Please contact your retailer.
48 SOC of the battery is too low Please contact your retailer.
61 Switching detection defect Please contact your retailer. (only with this
function)
62 Electronic derailleur cannot release. Please contact your retailer. (only with this
function)
71 Electronic lock is jammed Please contact your retailer. (only with this
function)
81 Bluetooth module has an error Please contact your retailer. (only with this
function)