CMACEWHEEL K5242 LCD Users Guide

Preface

Dear user, to ensure better performance of your e-bike, please read through the K5242 product introduction carefully before using. CMACEWHEEL will use the most concise words to inform you of all the details (including the hardware installation, setting and normal operation use of the display) when using our display. Meanwhile, the introduction will also help you to solve possible confusion and barriers.

1. Appearance and Dimensions

1.1 Material and Color

The K5242 products are made of black and white PC. Under the temperature of -20 to 60°C, the shell material can ensure normal usage and good mechanical performance.

Dimensions (unit: mm): The display unit is approximately 72mm in height and 84.5mm in width. The mounting bracket is approximately 6mm thick.

The K5242 is equipped with a special button, referred to as the N5 button. This button can be installed on the left side or the right side of the handlebar. The N5 button is connected with the bottom lead of the K5242 display. Its dimensions are approximately 54.45mm x 51.10mm for the main button unit, with a 22.00mm diameter for the mounting hole, and a 20.20mm x 20.20mm connector housing.

2. Function and Button Definition

2.1 Function Description

The K5242 provides a variety of function modes to meet your riding needs. Its functions include:

• Battery capacity indication
• Speed indication
• Distance (including single trip distance and ODO display)
• Walk assist indication
• Backlight setting
• Error code indication
• Various setting parameters

2.2 Normal Display Content

The normal display interface shows: PAS level (e.g., 'PAS 3'), TRIP distance, Speed (e.g., '9.6' MPH or Km/h), Battery capacity percentage (represented by a bar, e.g., '50%'), and POWER status indicator.

2.3 Button Definition

There are 5 buttons on the K5242. In the following introduction:

• One button is named as [MODE button].
• One button is named as [UP button].
• One button is named as [DOWN button].
• One button is named as [POWER ON button].

3. Note for Users

[Warning] Be careful of safe use. Do not attempt to release the connector when the battery is powered on.

Try to avoid hitting the display.

[Warning] Do not split the waterproof sticker to avoid affecting the waterproof performance.

[Warning] Do not modify system parameters to avoid parameter disorder.

[Tools] Make the display repaired when an error code appears.

4. Installation Instruction

When the e-bike is powered off, you can insert the connector of the display and the corresponding connector of the controller to complete the installation. Adjust the display to a suitable angle.

5. User Settings

5.1 On / Off

Long press the [MODE button] to turn the display on. The controller will power on at the same time. To turn the display off, long press the [MODE button]. The display will shut down, leaving off-battery mode with a leakage current of less than 1µA. The startup logo is shown during power-on.

[Information] If the e-bike is not used for more than 10 minutes, the display will automatically shut down.

5.2 User Interface

The normal display interface shows real-time speed, trip distance, PAS level, and battery status.

5.3 Walk Assist Mode

Press and hold the [DOWN button] for 2 seconds to enter Walk Assist mode. The e-bike will travel at a constant speed of 6 km/h. The display will show a bicycle icon highlighted in red, indicating Walk Assist mode. This function can only be used when pushing the e-bike by hand, not while riding.

5.4 PAS Level Selection

Short press the [UP button] or [DOWN button] to switch the PAS (Pedal Assist System) level. The default range of PAS level is 0-5. The display shows the selected PAS level, for example, 'PAS 4'.

5.5 Battery Capacity Indication

The battery power is shown as a percentage bar. When the battery is fully charged, the power bar shows 100%. Each segment on the bar represents 10% battery capacity.

• 0% battery capacity: The bar is empty.
• 50% battery capacity: Half of the bar is filled.
• 100% battery capacity: The entire bar is filled.

5.6 Speed/Single trip distance/ODO

5.6.1 Real-time Speed, Single Trip Distance (TRIP) Indication Interface

After the display is powered on, it defaults to showing the real-time speed and single trip distance. When the speed is zero, press [MODE button] and [DOWN button] simultaneously for 2 seconds to clear the current single trip distance. The single mileage will not be cleared after the display is shut down and restarted.

5.6.2 Max Speed, ODO Indication Interface

After the display is powered on, short press the [MODE button] from the default interface to switch to the maximum speed and ODO interface. The maximum speed refers to the highest speed recorded during the current ride, and the ODO is the total mileage of the e-bike.

5.6.3 Average Speed, Remaining Range (TO GO) Indication Interface

From the maximum speed and ODO display interface, briefly press the [MODE button] again to switch to the average speed and remaining range display interface. The average speed represents the average speed during this ride, and the remaining range indicates the estimated mileage the e-bike can still ride.

5.7 Error Code

When the e-bike electronic control system fails, the display will automatically indicate an error code. For a definition of detailed error codes, see Appendix 1. The display shows "ERROR" with a numerical code (e.g., "30"). The fault can only be exited when the fault is eliminated, and the e-bike cannot continue to drive after a fault occurs.

6. User Settings

When the speed is zero, press the [UP button] for two seconds to enter the setting interface. You need to input the password '1801'. Short press [MODE button] to enter the setting item, and short press [MODE button] again to switch between setting interfaces. The input password interface shows four digits, defaulting to "0000".

6.1 Wheel Size Setting

Short press the [MODE button] to enter the setting option. The settable values for wheel size are: 20, 22, 24, 26, 700C, 28, and 29 inches. Select the corresponding wheel diameter of the e-bike using the [UP button] and [DOWN button] to ensure the accuracy of the speed and mileage display. Long press the [MODE button] to return to the setting list interface. The wheel size setting interface shows the selected size, e.g., "27.5 INCH".

6.2 Speed Limit Setting

The settable values for speed limit are: no speed limit, or 8 km/h to 45 km/h. Select the required speed limit value using the [UP button] and [DOWN button]. A value of '99' means no speed limit. The display defaults to no speed limit. Long press [MODE button] to save the settings and return to the main interface. The speed limit setting interface shows the selected limit, e.g., "99 Km/h".

6.3 Backlight Brightness Setting

Short press the [MODE button] to enter the setting option. The setting options are 1, 2, and 3, indicating backlight brightness: 1 is the darkest, 2 is standard brightness, and 3 is the brightest. The default value is 3. Long press the [MODE button] to return to the setting list interface. The backlight brightness setting interface shows the selected level, e.g., "3 bL".

6.4 Display Unit Setting

Short press the [MODE button] to enter the setting option. The setting parameters are Km/h and Mile/h. The default unit is Km/h (metric). Km/h or Mile/h can be selected by pressing the [UP button] and [DOWN button]. Km/h means the unit is the metric system, and Mile/h means the unit is the Imperial system. Long press the [MODE button] to return to the setting list interface. The display unit setting interface shows the selected unit, e.g., "Km/h".

6.5 Speed Sensor Magnetic Stone Number Setting

This interface is for setting the speed sensor magnetic stone number. The setting parameters can be 0-99. The default value of 1 indicates that the number of external speed measuring magnets is 1. The number of magnetic steels can be selected by pressing the [UP key] and the [DOWN key]. Long press [MODE button] to save the settings and return to the main interface. The speed sensor magnetic stone number setting interface shows the selected number, e.g., "01 SPS".

6.6 Zero Start Setting

This is the zero start setting interface. The setting parameters can be 0 or 1. The default value of 1 indicates non-zero startup. 0 means zero start of the e-bike (requires pedaling to start), and 1 means non-zero start (can start with throttle without pedaling). Press the [UP key] and the [DOWN button] to select 0 or 1. Long press [MODE button] to save the settings and return to the main interface. The zero start setting interface shows the selected value, e.g., "01 05t".

6.7 Driver Mode Setting

Short press the [MODE button] to enter the setting interface. The setting options are 0, 1, and 2. Press the [UP/DOWN button] to select 0, 1, or 2 to adjust the three riding assist modes. 0 indicates only PAS assist mode, 1 indicates only throttle mode, and 2 indicates coexistence of both PAS and throttle assisted modes. The default setting is 2. Long press the [MODE button] to confirm and return to the setting selection interface. The driver mode setting interface shows the selected mode, e.g., "02 dP".

6.8 PAS Power Sensitivity Setting

Short press the [MODE button] to enter the setting interface. The setting range is from 3 to 24. A value of 3 is the highest sensitivity, and 24 is the lowest. Press the [UP/DOWN button] to select the sensitivity value. The default setting is 3. Long press the [MODE button] to confirm and return to the setting selection interface. The PAS Power Sensitivity Setting interface shows the selected value, e.g., "03 SCn".

6.9 PAS Power Start Strength Setting

Short press the [MODE button] to enter the setting interface. The setting range is from 0 to 5. Press the [UP/DOWN button] to select the start strength value. The default setting is 3. Long press the [MODE button] to confirm and return to the setting selection interface. The PAS power start strength setting interface shows the selected value, e.g., "03 bP".

6.10 Controller Current Limit Setting

In the controller current limiting setting interface, the default value of 20 indicates that the current limiting value is 20A. Setting parameters can be adjusted from 1A to 30A. Press [UP button] and [DOWN button] to select values from 1A to 30A. Long press [MODE button] to save the settings and return to the main interface. The controller current limit setting interface shows the selected value, e.g., "20 Cut".

6.11 Pas Magnetic Number Setting

Short press the [MODE button] to enter the setting interface. The setting range is 5, 8, or 12. This should be set according to the number of magnets on the disk installed on the e-bike. Press the [UP/DOWN button] to select the value. The default setting is 12. Long press the [MODE button] to confirm and return to the setting selection interface. The PAS Magnetic Number setting interface shows the selected number, e.g., "12 nub".

7. USB Charging Function

A USB interface with charging functionality is installed under the N5 button. This interface provides charging power for mobile phones, with an output current of 500mA. When the display is turned off, connect the data cable of the mobile phone to the display and the mobile phone. After the display is turned on, the mobile phone will display charging. If the display is turned off while charging, the phone will stop charging.

To initiate charging when the display is on, press and hold the [MODE button], [UP button], and [DOWN button] keys simultaneously. After holding for a period, the instrument will start charging the mobile phone. In any state, unplugging the phone will automatically terminate the charging.

8. Preparation Before Startup

Please read the instruction carefully before using the display.

9. FAQ

Q: Why can't the display turn on?

A: Please check whether the battery is turned on or if the leakage lead wire is broken.

Q: How to deal with the error code display?

A: Contact the e-bike maintenance station in time.

10. Quality Assurance and Warranty Scope

I. Warranty Information:

1. CMACEWHEEL will be responsible for all faults arising during normal operation that are caused by a quality defect.
2. The warranty time is 24 months from the day the display leaves the factory.

II. The following are not covered by warranty:

1. Shell opened.
2. Connector damaged.
3. After display leaves the factory, the shell is scratched or damaged.
4. Lead wire of display scratched or broken.
5. The fault or damage is caused by force majeure (such as fire, earthquake, etc.) or natural disasters (such as lighting, flooding, etc.).
6. Product exceeded warranty period.

Appendix 1: Error Code Definition