1. Introduction
The SiAECOSYS CT-22 is a programmable digital speedometer designed for electric motorcycles, compatible with 48V-144V systems and suitable for use with Fardriver controllers. This display provides essential riding information including time, driving distance, current speed, battery voltage, and electric quantity.
2. Product Features
- Wide Voltage Compatibility: Operates within a 48V to 144V range.
- Programmable Display: Allows customization of certain display parameters.
- Comprehensive Information Display: Shows current time, driving distance (ODO/trip), real-time speed (km/h or mph), battery voltage, and electric quantity.
- Integrated Indicators: Includes indicators for headlight status, speed, mileage, and battery level.
- Driving Mode Indicators: Features indicators for ECO, NRM (Normal), and SPT (Sport) modes.
- Durable Construction: Made from transparent PC and ABS materials for the instrument panel, lining plate, and bottom shell.
3. Specifications
| Feature | Detail |
|---|---|
| Model | CT-22 |
| Speedometer Size (L x W x H) | 185mm x 90mm x 80mm |
| Net Weight | 0.35 kg |
| Operating Voltage | 48V - 144V DC (Working power supply) |
| Lighting Power Supply | 12V |
| Mileage Signal | External digital signal |
| Material | Plastic (Transparent PC, ABS) |
| Special Features | Display (Time, Distance, Speed, Voltage, Electric Quantity) |
4. Package Contents
- 1x SiAECOSYS CT-22 Electric Motorcycle Speedometer
- 1x Wiring Harness
5. Installation and Wiring
Careful wiring is essential for proper function and safety. Refer to the wiring diagram and definition table below for detailed connections.
5.1 Wiring Diagram Overview
5.2 Wiring Definition Table
| Port | No. | Icon | Cable Color | Function | Display Mode | Remark |
|---|---|---|---|---|---|---|
| B DJ7041A-2.8-21 | 1 | Yellow | memory line | Memory line for Speedometer functions (connect with battery DC+144V) | ||
| 2 | Red | power line | +144V, through electric lock | |||
| 3 | Green-Black | ground wire for instrument | Connect with negative pole of 144V battery | |||
| 4 | Green | ground wire for LED indicator light | Connect with negative pole of 12V convertor | |||
| A DJ7091A-2.8-21 | READY | LCD white | when speed is zero, LED light flicker and vice versa | |||
| 5 | Black | LED power line | Connect with +12V of convertor | |||
| 6 |  | Brown | Position Lamp | LED green | Connected with +12V, the lamp should light | |
| 7 | | Blue | high beam light | LED blue | Connected with +12V, the lamp should light | |
| 8 | | Light Blue | right steering | LED green | Connected with +12V, the lamp should light | |
| 9 | | Orange | left steering | LED green | Connected with +12V, the lamp should light | |
| 10 | Yellow-White | speed signal | Connect with any one of three Hall signal wires from motor/controller. | |||
| 11 | Blue-Green | ECO | LED green | Connected with 12V ground, the lamp should light. | ||
| 12 | Yellow-Black | NRM | LED green | Connected with 12V ground, the lamp should light. | ||
| 13 | Blue-White | SPT | LED green | Connected with 12V ground, the lamp should light. |
Important Notes for Installation:
- The working power supply for the speedometer is DC48-200V.
- The instrument lighting power supply requires 12V.
- The mileage power signal is an external digital signal.
- Ensure all wiring and connectors meet the specified technical conditions for motorcycle cables and automotive wiring harness connectors.
- The wire cross-sectional area should be 0.5mm.
- Connect the speed signal (Yellow-White wire) to any one of the three Hall signal wires from the motor or controller.
6. Operation
The CT-22 display provides real-time information about your electric motorcycle's status. The main screen typically shows:
- Speed Display: Shows current speed in km/h or mph.
- Mileage Indicator: Displays total odometer (ODO) and trip distance.
- Voltage Display: Shows the current battery voltage.
- Electric Quantity: A bar graph indicates the remaining battery charge.
- Clock: Displays the current time.
- READY Indicator: The LCD white light flickers when speed is zero and vice versa.
- Mode Indicators: ECO, NRM (Normal), and SPT (Sport) indicators light up based on the selected driving mode (if connected to a compatible controller).
- Warning/Status Lights: Indicators for headlight power on, high beam, right steering, and left steering.
Specific programming instructions for customizing display parameters are typically provided by the controller manufacturer or through dedicated software, as this display is designed to interface with a Fardriver controller.
7. Maintenance
- Cleaning: Use a soft, damp cloth to clean the display surface. Avoid abrasive cleaners or solvents that could damage the plastic.
- Protection: Keep the display free from excessive moisture, direct sunlight for prolonged periods, and extreme temperatures.
- Wiring Inspection: Periodically check all wiring connections for tightness and signs of wear or corrosion.
8. Troubleshooting
- Display Not Turning On:
- Check the main power line (Red wire) connection to the electric lock and battery (+144V).
- Verify the ground wire for the instrument (Green-Black wire) is securely connected to the negative pole of the 144V battery.
- Ensure the 12V power line (Black wire) for the LED is connected to a 12V converter.
- No Speed Reading:
- Confirm the speed signal wire (Yellow-White) is correctly connected to one of the Hall signal wires from the motor or controller.
- Check the motor/controller for proper function.
- Incorrect Voltage/Battery Reading:
- Verify the main power and ground connections to the battery.
- Indicator Lights Not Working:
- Check the 12V ground wire for LED indicator light (Green wire) connection to the 12V converter.
- Ensure the specific indicator wire (e.g., Brown for Position Lamp, Blue for High Beam) is correctly connected to its +12V source.
9. User Tips
- Compatibility Check: Before purchasing or installing, always verify the speedometer's compatibility with your specific electric motorcycle model and controller (e.g., Fardriver Controller). Pay close attention to voltage requirements and signal types.
- Professional Installation: If you are unsure about the wiring process, it is highly recommended to seek professional assistance to avoid damage to the speedometer or your vehicle's electrical system.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
