MEGMEET L6 series electric drive

L6 series product positioning and application scenarios

L6 is specially developed for electric construction machinery vehicles, suitable for various types of electric construction vehicles ranging from 0.4 to 10 tons:

Electric balance weight forklifts, electric tractors, high-altitude boom trucks, concrete mixer trucks, loaders, scissor lift platforms, warehousing and logistics vehicles, golf carts, sightseeing vehicles, sanitation vehicles, electric lawn mowers, stackers, patrol vehicles, elderly electric scooters, etc.

It can be used for both medium speed pump driven hydraulic systems and high-speed walking electric drive systems.

Power supply: Supports lead-acid and lithium batteries; DC voltage 24V-600Vdc; The maximum peak power is 110 kW.

Protection level: IP65 for most models; The L640/L650 high-power models achieve IP67 and are suitable for harsh industrial environments with severe temperature fluctuations.

A complete set of electronic control solutions can be delivered, including vehicle instruments, controllers, permanent magnet synchronous motors, and other complete solutions.

Core product features

1. Rich hardware specifications

Input voltage range: 24V, 48V, 72V, 80V, 96V, 144V, 280-500V;

Output current: 150A-650A; The maximum peak power is 110 kW;

Motor and encoder adaptation:

AC asynchronous motor+A/B incremental photoelectric encoder

Permanent magnet synchronous motor+rotary transformer solver

Supports multiple drive architectures: single drive walking, single drive hydraulic, single drive walking+single hydraulic, dual drive walking+single hydraulic, four-wheel drive walking+single hydraulic.

2. External interfaces

35PIN universal industrial interface, pin definition benchmarking imported brands, compatible with vehicle sealing I/O;

Two independent CAN buses

CAN1 (General Debugging CAN): Docking with self-developed upper computer MDs smart; After USB-CAN conversion, parameter reading and writing, status monitoring, waveform analysis, firmware upgrade, debugging and maintenance can be achieved; Configurable terminal 120 Ω resistor; Baud rate 125K/250K/500K/1M;

CAN2 (Vehicle Isolation CAN): Customizable vehicle communication protocol for replacing existing drivers for customers.

3. Control algorithm performance

Using vector control algorithm, specialized algorithm optimization is carried out for asynchronous/synchronous motor high, medium, and low speeds, forklift steep slope descent, dual drive differential, high-altitude vehicle braking control, four-wheel drive climbing, acceleration and deceleration synchronization, and other working conditions.

Output frequency: 0-300 Hz; peak operating current: 200-600A.

4. Vehicle safety and driving comfort

Built in dual drive differential control and steering speed limit, even without a VCU vehicle controller, dual motor steering electronic differential can be achieved;

Equipped with hill descent control, anti slip, and intelligent throttle functions, it enhances the active safety and driving experience of the vehicle;

Braking/reverse energy feedback control, recovers energy, and extends range.

5. Improve protection functions

Basic protection: undervoltage, overvoltage, overcurrent, output short circuit;

Alarm shutdown: Drive overheating, motor overheating, overload, encoder disconnection;

Battery reverse connection protection, power cord/encoder disconnection detection; Comprehensively protect the driver, motor, and vehicle electronic control system.

6. Certification and Standards

EMC: EN 12895 Industrial Vehicles, ISO 13766-1 Electromagnetic Compatibility of Construction Machinery;

Safety: EN 1175 Electrical safety of industrial vehicles;

GB/T 18488-1/2 Electric Vehicle Drive Motor System;

EN 13849-1 functional safety certification;

T-CCMA 0129 Non road Vehicle Motor Controller Standard.

7. Craftsmanship and Customization

Power substrate vacuum reflow soldering process, produced at Zhuzhou manufacturing base, low porosity, ensuring stable output of high current;

Support customized development for customers; The new generation of products supports a two in one integration solution, simplifying installation, reducing costs and increasing efficiency, and adapting to export OEMs.

Model Naming Rules

L6 36E‑ 8045‑ PR‑XXX

L6: Product Series

Model specifications: 30/32E/36E/38E/40/50/60D/60T/62D

Input voltage level: 24/48/80/96/144/300/500 (representing DC voltage)

Peak effective current: 20=200A, 25=250A, 35=350A, 40=400A, 45=450A, etc

PG card type: PR=equipped with rotary transformer; None=equipped with A/B phase photoelectric encoder

XXX: Customer customized model; Leave the standard model blank.

D represents dual drivers; T represents DC pump output.

Overview of Main Model Parameters

The document provides a complete model list, divided into natural cooling, air-cooled, and water-cooled models:

Low voltage and low power (24-144V, naturally cooled): L630, L632E, L636E, L638E; Single channel output;

Medium and high voltage high power (300V, 500V): L640, L650, divided into natural cooling, air-cooled, water-cooled, with a maximum peak of 110 kW;

Dual drive models L660D/L660T/L662D: Dual power channels, T model with additional DC pump output.

General technical indicators

Project parameters

The maximum carrier frequency is 8 kHz

Maximum output frequency 300   Hz

Heat sink isolation withstand voltage 500 Vac

Storage temperature -40 ℃~+70 ℃

Working environment temperature -30 ℃~+50 ℃

Protection level L630/32E/36E/38E/660D/T/662D: IP65; L640/L650：IP67

Mechanical and installation information

Provide the weight, dimensions, installation hole positions, and terminal specifications (M6/M8 screws) for each model; High power water-cooled models with water pipe interface;

Provide 2D and 3D drawings, which can be requested from technical personnel;

Contains multiple sets of exterior installation dimension engineering drawings.

Hardware interface and electrical schematic diagram

35PIN control interface: digital switch input SWx, analog throttle signal, encoder A/B, Resolver rotary interface, motor temperature sensor, two CAN buses, power drive output, etc; Distinguish the hardware differences between photoelectric encoders and rotary transformers.

Complete wiring diagrams for each model:

L630‑2424‑Z / L630‑2428‑Z

L632E / L636E / L638E

L660T (dual drive with DC pump)

L640 (300V high voltage)

L650 (500V high voltage)

L662D dual driver (photoelectric encoder version, rotary transformer version)

The drawing includes: main power supply B+/B -, emergency stop, key switch KSI, throttle potentiometer, temperature sensor, encoder/rotary converter, CAN communication, solenoid valve drive output and other complete circuits.

Supporting P6 series color instrument panel

A car mounted color instrument panel specifically designed for L6 controllers, with reserved network expansion interfaces for the entire vehicle.

Models P6-24 (24VDC) and P6-80 (80VDC);

Power supply range, working temperature -20~+70 ℃, protection IP65, natural cooling;

Pin definitions: power supply, multi-channel switch input, MOSFET output, CAN-H/L, RS485, etc; Matching AMP connector model.