BAFANG DP C171.UART User manual

1
DISPLAY MANUAL DP C171.UART
CONTENT
Content 1
Introduction 2
Appearances and dimensions 3
Specifications 4
Functional overview 5
Normal indication area 6
Button definition 7
Normal operation 7
Parameter setting 10
Error code definition 13
Bluetooth function 14
DP C171.UART
CONTENT

2DISPLAY MANUAL DP C171.UART
INTRODUCTION
•Name: Intelligent display HMI
•Model: DP C171.UART
•Scope: EN15194 electrical bicycle
•Appearance: the shell is made of PC; The
liquid crystal display is made of hardened
PMMA.
•Numbering on the back of HMI
Number on the middle of display back, num-
ber is divided into up row and down row (as
shown in the figure):
A. First line as below
DP C171.U 1.0
①DP C171.U : BAFANG Display model
② 1.0: Hardware version number
B. Second line as below
602F8Q7280001
① 602: Wire length and connector model
850 M5.2, keypad250
② F8: test device number
③ Q7280001:production date is
July 28th ,2016, serial number is 0001.
please refer to <Instrument labelling
rules> for other detailed description,
the document number is BF-TS-753-
C0-02II.
•Display HMI P type wire label number rule
Number on the middle of P type label, num-
ber is divided into up row and down row
and QR code is at right side (as shown in the
below figure).
The first line:
DPC171F80201.1- Software version
The second line:
PD2526051205 - Parameter code
Content of QR code:
DPC171F80201.1
PD2526051205
DP C171.U 1.0
602F8Q7280001

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DISPLAY MANUAL DP C171.UART
APPEARANCES AND DIMENSIONS
APPEARANCES AND DIMENSIONS

4DISPLAY MANUAL DP C171.UART
SPECIFICATIONS
•36V/43V/48V DC power supply
•Rated current is 10mA
•Maximum operating current is 30mA
•Power-off leakage current is less than 1uA
•Operating current supplied to controller is
50mA
•Operation temperature: -20℃~45℃
•Storage temperature: -30℃~70℃
•IP level: IP65
•Storage humidity: 30%-70%

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DISPLAY MANUAL DP C171.UART
FUNCTIONAL OVERVIEW
•Use of a two-way serial communication
protocol, simple operation of the display via
the external 5-key keypad.
•Speed display: displaying the real-time speed
as SPEED, the maximum speed as MAXS and
the average speed as AVG.
•Km or mile: The user can choose between
km and mile.
•Intelligent battery level indication: With an
optimization algorithm, a stable display of
the battery level is ensured, and the problem
of fluctuant battery level indication common
with other displays is avoided.
•Automatic light-sensitive lights: The head-
light, taillight and display backlight will be
automatically turned on/ off depending on
lighting conditions.
•5 levels off display backlighting: Different
levels, leave 1 is most dark, level 5 is highest
light.
•6-Level-Support: setting power Levels 0 to 5.
•Trip distance indication: The maximum
distance displayed is 99999. Single-trip
distances TRIP or the total distance TOTAL
can be displayed.
•Intelligent display: including motor output
power W for riding, Remaining miles TO GO,
consumption of energy (calories) C.
•Display of error messages
•Walk assistance
•Settings: Various parameters, e.g. mode,
wheel diameter, speed limit etc., can be set
on the computer via a communication cable.
See the setting.
•Maintenance warning (this function can be
deactivated): Maintenance warning informa-
tion is- dis played based on battery charge
cycles and riding distance. The display auto-
matically estimates the battery life and gives
warnings when the number of charge cycles
exceeds the set value. A warning will also be
displayed when the accumulated total riding
distance exceeds the set value.
•With Bluetooth module: Can connect to an
send message to phone, and phone can
display complete information of the entire
cycle.
FUNCTIONAL OVERVIEW

6DISPLAY MANUAL DP C171.UART
NORMAL INDICATION AREA
1Battery capacity indication
2Maintenace warning
3Main data indication
4Trip data
5Indication for history and battery data
6Push asisstance
7USB connection
8Headlight indication
9Malfunction warning
10 Error warning
11 Selection of speed unit
12 History of riding speed
13 Remaining range
14 Unit indication
15 Level indication
•Battery capacity indication: 10-segment
battery indication; the voltage that each seg-
ment represents can be customized.
•Maintenance warning: When there is a need
for maintenance the symbol will be
displayed (riding distance or the number of
battery charge cycles exceed the set value,
function can be deactivated).
•Main data indication: indicate the real-time
speed and error code
•Trip data: the single-trip distance TRIP, the
total distance TOTAL.
•Indication for history and battery data:
indicate the history of riding and battery
real-time data
•Push asisstance: Push and walk assistance
at 6km/h
•USB connection: connect to USB charging
port
•Headlight indication: only shows when
headlight or backlight are on.
•Malfunction warning: When a fault is de-
tected the symbol will be displayed.
•Error warning
•Selection of speed unit: display of the speed,
km/h or mph.
•Level indication: The chosen level 1–5 will
be displayed; if there is no numeric display,
it means that there is no assistance (by the
motor). If the rider is walking and pushing
the e-bike, will be displayed.
•History of riding speed: average speed (AVG
km/h), maximum speed (MAXS km/h).
•Remaining range:remaining distance TO GO.
•Distance indication: display of the distance
depending on the setting.
19
10
11
14
13
15
2
8
7
4
3
5
6
12

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DISPLAY MANUAL DP C171.UART
BUTTON DEFINITION
NORMAL OPERATION
•ON/OFF Switch
Turn on the device, press and hold for
2s to power on the display. Press and hold
again for 2s to power off the display, If
the bike is not used, after 5 minutes (time
can be set) the display will be automatically
turned off.
•Assist Mode Selection
In the manual gearshift mode, press the
or choose the desired level of support by
the motor. The lowest level is Level 1, the
highest Level 5. When the display is on, the
default mode is Level 1. When there is no
numeric mode display, there is no power
assistance.
(power assistance lever selection interface as
below figure)
BUTTON DEFINITION
Headlight button
Switch button
Mode button
Up button
Down button

8DISPLAY MANUAL DP C171.UART
•Switch between Distance Mode and
Speed Mode
Briefly press to switch between distance
and speed. Single-trip distance (TRIP km)
→Total distance (TOTAL km) →Maximum
speed (MAXS km/h) →Average riding speed
(AVG km/h) → Remaining distance(TO GO) →
Real-time output power (W) →Energy con-
sumption (C) →Heartbeat (H) are displayed
in successive order.(Switch mode interface
as below)
•Headlight/ Display Backlight Switch
Press for 2 seconds. The backlight of
the display as well as the headlight and tail-
light will be turned on. Press again for
2 seconds to power off the display backlight
/ headlight / taillight. There are 5 levels of
backlight brightness that can be selected by
the user. (If the display is turned on in a dark
environment, the display backlight / head-
light / taillight will be turned on automati-
cally. If the display backlight / headlight / tail-
light are turned off manually, they also need
to be turned on manually afterwards)
•Walk Assistance
Press for 2 seconds. The e-bike enters
the walk assistance mode, and the symbol
WALK is displayed. Once the key is
released, the e-bike will exit the walk as-
sistance mode.

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DISPLAY MANUAL DP C171.UART
NORMAL OPERATION
•Battery Status Indication
When the battery status is normal, a certain number of the battery LCD segments as well as the bor-
der light up according to the actual quantity of charge. If all of the 10 segments will black out with
the border blinking, the battery needs to be charged immediately.
•Battery status indication
Number of
Segments
Charge in
Percentage
Number of
Segments
Charge in
Percentage
Number of
Segments
Charge in
Percentage
10 ≥90% 6 50%≤C<60% 2 15%≤C<25%
9 80%≤C<90% 5 45%≤C<50% 1 5%≤C<15%
8 70%≤C<80% 4 35%≤C<45% Border
blinking C<5%
7 60%≤C<70% 3 25%≤C<35%
•When display turns off, connect the USB
cable to the port of the display and then dis-
play turn on and begin charge. If display is
being on, only connect the USB cable to the
port to the display and display begin charge.
Maximum charge voltage is 5V, maximum
charge current is 500mA

10 DISPLAY MANUAL DP C171.UART
PARAMETER SETTING
•Items to be Set
1〉Data reset
2〉Km/mile
3〉Light sensitivity
4〉Display backlight brightness
5〉Automatic off time
6〉Maintenance warning settings
7〉Check wheel diameter
8〉Speed Limit Setting
9〉Speed model
10 〉Battery infromation10 error code
•Setting Preparation
1) When the display is active, press
twice (interval < 0.3 seconds). The system
will enter the MENU parameter setting
state, in which the display parameters can
be set. Press twice again (interval < 0.3
seconds) to return to the main menu.
2) If no operation is performed for 10 sec-
onds, the display will return to the normal
riding display.
3) In the parameter setting state, when the
parameter you want to set begins to flash,
press / to adjust the parameter value.
Briefly press to switch between the pa-
rameters to be set. Press twice (interval
< 0.3 seconds) to exit the submenu.
•Data reset
Press twice (interval < 0.3 seconds) –
the display enters the MENU state. In the
speed field tC is displayed. If you press ,
a "y" is also displayed. Now all temporary
data, e.g. maximum speed (MAXS), average
speed (AVG) and single trip distance (TRIP)
can be cleared. Briefly press (< 0.3 sec-
onds) to enter the km/mile setting interface.
If the user does not reset the data, the single
trip distance and the accumulated total rid-
ing time will be automatically cleared when
the accumulated total riding time exceeds
99 hours and 59 minutes.
* The data will not be cleared when the
display’s light-sensing function is set to 0 or
when it is switched off!
•Km/mile
When the speed field displays S7, press
/ to switch between km/h and mph, or
to set km or mile. After this setting, briefly
press (< 0.3 seconds) to enter the
setting interface of light sensitivity. Default
display is km.
•Light Sensitivity
When the speed field displays bL0, press
/ to choose a figure between 0 and 5.
The higher the chosen figure, the higher the
light sensitivity.

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DISPLAY MANUAL DP C171.UART
After this setting, briefly press (< 0.3
seconds) to enter the setting interface of
backlight brightness.
•Display Backlight Brightness
When the speed field displays bL1, press
/ to choose a figure between 1 and 5.
The figure 1 represents the lowest brightness
while 5 indicates the highest display back-
light brightness.
After this setting, briefly press (< 0.3
seconds) to enter the setting interface of
automatic off time.
•Automatic Off Time
When the speed field displays OFF, press
/ to choose a figure between 1 and 9.
The figures indicate the minutes that it takes
to automatically shut down the display.
After this setting, briefly press (< 0.3
seconds) to enter the setting interface of
maintenance warning.
•Maintenance Warning (can be deacti-
vated)
When the speed field displays nnA, press
/ to choose either 0 or 1. 0 disables the
function while 1 enables it.
1) The display will prompt maintenance
necessity based on such information as the
accumulated riding distance and the battery
charge cycles.
2) When the accumulated total riding dis-
tance exceeds 5,000 km (can be customized
by the manufacturer), the display will show
the symbol . When the display is
started up, the sign for accumulated riding
distance will flash for 4 seconds, indicating
that maintenance is necessary.
3) When the number of battery charge cy-
cles exceeds 100 (can be customized by the
manufacturer), the display will the symbol
. When the display is started up,
the sign for battery will flash for 4 seconds,
indicating that maintenance is necessary.
4) The maintenance alert function can be
disabled: settings ->maintenance alert (MA)
-> 0. (Maintenance alert can also be set via
a computer. This requires a USB connection.
See also the parameter setting instructions).
PARAMETER SETTING

12 DISPLAY MANUAL DP C171.UART
•Wheel Diameter check
Speed position displays
Wd, The measurements
are in inches. A wrong
wheel diameter can lead
to speed anomalies.
After this setting, briefly
press (< 0.3 seconds) to
enter the setting interface of speed limit.
•Speed Limit Setting
When the speed field
displays SPL, the distance
field displays the value of
the speed limit. Minimum
speed limit is 12km/h,
maximum speed limit is
60km/h.
After setting, Briefly Press (< 0.3
seconds) to enter the menu of battery com-
munication.
•Battery Communication
The speed field displays
b01 and the distance field
displays the speed limit.
Press (< 0.3 seconds)
to cycle backward. After
this setting, press (<
0.3 seconds) to enter into
the interface of memory for error code.
1) Only when communication has been
established between the battery and the
controller the following information will be
displayed, otherwise the display will only
show "- - - -".
2) Information on the battery menu:
The speed
field displays Definition Unit
b01 Current
temperature ℃
b04 Total voltage V
b06 Average current A
b07 Remaining
capacity Ah
b08 Full capacity Ah
b09 Relative state of
charge
b10 Absolute state
of charge
b11 Charge/
discharge cycle
b12 Longest period
without charge h
b13 Period since last
charge h
d00 Cell quantity
d01 Voltage of
cell 1 V
d02 Voltage of
cell 2 V
……… ………
dn Voltage of
cell n V

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DISPLAY MANUAL DP C171.UART
ERROR CODE DEFINITION
The DP C171.UART display can show e-bike
faults. When a fault is detected, the icon will be
displayed. In the speed field one of the
following error codes will be displayed:
Error code Error definition Error-shooting method
“04” The throttle has not returned home Check if throttle has returned home
“05” Throttle fault Check the throttle
“07” Overvoltage protection Check the battery voltage
“08” Motor hall signal cable fault Check the motor module
“09” Motor phase cable fault Check the motor module
“11” Controller temperature sensor failure Check the controller
“12” Current sensor failure Check the controller
“13” Battery temperature fault Check the battery
“14” Motor temperature fault Check motor
“21” Speed sensor fault Check installation position of speed sensor
“22” BMS communication fault Replace the battery
“30” Communication fault Check the controller connection
Hint warning interface
ERROR CODE DEFINITION

14 DISPLAY MANUAL DP C171.UART
BLUETOOTH FUNCTION
•Can use “Bafang GO”APP which developed
by BAFANG, and also can develop APP
by the SDK which provided by BAFANG.
BAFANG APP as figure below:
•This display is compatible with SIGMA heart-
beat strap,so the display can catch the data
from the strap and transmit to smart phone
to indicate.
•All the data which can be indicated on the
APP as the list below:
ITEM Function
1 SPEED
2 CAPACITY
3 SUPPRT MODE
4 BATTERY DATA
5 SENSOR DATA
6 REMAINING RANGE
7CALORY
8 COMPONENTS DATA
9 CURRENT
10 HEATBEAT RATE
11 TRIP
12 ODO
13 HEAD LIGHT STATUS
14 ERROR CODE

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DISPLAY MANUAL DP C171.UART
BLUETOOTH FUNCTION

16 DISPLAY MANUAL DP C171.UART
NOTES