FM S-886 User manual
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（for electric scooter only）
1. Exterior Parameters
Casing Material: ABS
Display Material: High Hardness Acrylic (the same hardness value as tempered
glass).
Front View
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LCD Display S-886
User Manual V.2018
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Side View
Thumb Throttle
2. Operating Voltage and Connections
a. Operating Voltage: DC24V / 36V Compatible, 36/48V Compatible (set by
the control Display). Other operating voltage can be customized.
b. Connections:
Standard connector sequence
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ControllerConnector DisplayEnd(Waterproof) ControllerEnd(Waterproof)
StandardConnectorSequenceTable
Sequence No. Wire Colour Functions
1 Red（VCC）Display Power Cord
2 Blue（K）Controller Power Cord
3 Black（GND）Display Ground Wire
4 Green（RX）Display Data Receiving
Wire
5 Yellow（TX）Display Data Sending Wire
Note: Some products come with waterproof connectors, whose internal wire
colors cannot be decided from outside.
3. Functions
a. Display
Speed Display, Battery Level Display, Error Indication, Total Mileage, Single
Mileage
，b. Control and Setting
Power Switch, Wheel Diameter Setting, Idleness Time Setting for
Auto-Hibernation, Backlight Brightness Setting, Start Mode Setting, Drive
Mode Setting, Voltage Level Setting, Controller Current Threshold Setting
c. Communications Protocol: UART
Display Readings (display at start for 1 second)
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Interface Instruction
3.1 Battery Level
3.2 Multi-Function Display
Total Mileage: ODO (km or mile)
Single Mileage: TRIP
Rest Mileage: RM (software support of battery protection board needed)
Operation Time: TM
Error Code: ERR
3.3 Error Code
Error
Code
(decimal)
Indications Note
0 Normal
1 Reserved
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2 Brake
3 PAS Sensor Failure (riding mark) Not Realized
4 6km/h Cruise
5 Real-Time Cruise
6 Low Battery
7 Motor Failure
8 Throttle Failure
9 Controller Failure
10 Communications Receiving Failure
11 Communications Sending Failure
12 BMS Communications Failure
13 Light Failure
3.4 Speed Display
Measuring Unit: mph or km/h
The Display will calculate the actual travelling speed based on the wheel
diameter and signal data (number of magnet steel is needed for motors with
Hall sensors).
3.5 Power Assist Level
3.6 Direct Start and Kick-to-Start Mode
Direct Start
Kick-to-Start
4. Settings
P01: Backlight Brightness (1: darkest; 3: brightest)
P02: Mileage Unit (0: km; 1: mile)
P03: Voltage Class: 24V /36V (default) / 48V
P04: Hibernation Time (0: never, other figures refer to the hibernation time)
Unit: minute
P05: Power Gear – 0-3 Gears Mode
P06: Wheel Diameter Unit: inch Precision: 0.1
P07: Magnet Steel Number for Speed Test Range: 1-255
P08: Speed Limit
Range: 0-50km/h, parameter 50 indicates no speed limit.
1. Non-communications status (Display-controlled)
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When the current speed exceeds the speed limit, the PWM output will be
shut down; when the current speed falls to lower than the speed limit, the PWM
output will be activated and the driving speed will be set as the current speed ±
1km/h (only applies to assist power speed, not applicable to the handlebar
speed).
2. Communications status (controller-controlled)
The driving speed will be kept constant as the limited value.
Error Value: ±1km/h (applicable to both the assist power/handlebar
speed)
Note: The above-mentioned values are measured by metric unit
(kilometers). When the measuring unit is switched to imperial unit (mile), the
speed value displayed on the Display will be automatically switched to
corresponding imperial unit, however the speed limit value in the imperial unit
interface won’t change accordingly.
P09: Direct Start / Kick-to-Start Setting:
0:Direct Start
1:Kick-to-Start
P10: Drive Mode Setting
0: Power Assist Drive Only– The specific gear of the assist drive decides the
assist power value. In this status the handlebar does not work.
1: Electric Drive (Throttle) Only – The vehicle is driven by the handlebar. In
this status the power gear does not work.
2: Power Assist + Electric Drive – Electric drive does not work in direct start
mode.
P12: Assist Power Intensity Range: 0-5
P13: Power Magnet Steel Number: 5 / 8 / 12pcs
P14: Current Limit Value: 12A by default; Range: 1-20A
P15: Unspecified
P16: ODO Zero-Out: Long press the upper key for 5 seconds to zero out ODO.
5. Keys
Introduction of Keys
1. When the display is off, long press to turn it on. When the display is
on, short press to switch among ODO / TRIP / TM mode.
2. When the display is on, long press to turn it off, or short press
to adjust power assist level.
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3. Long press +to enter the setting menu. At the setting
interface, short press to adjust parameters. Long press to
switch the value increase/decrease function of this key .
Change parameter value:
Short press to change parameter value.
Short press to increase or decrease the value.
Short press to save the previous change and jump to the next setting.
Long press +to exit setting interface, or wait for 8 seconds to
automatically save values.
4. The thumb lever is used to adjust motor speed. Turn the lever from top down,
and the motor will accelerate, release the lever and it will rebound.
Note: Due to product upgrade, the product you purchased may be
slightly different from the descriptions in this user manual, and this
won’t affect normal usage.
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