Description
Lenze E84AVSCE3712SX0
Technical Specifications
- Product Type: AC frequency inverter
- Rated Power: 3.7 kW
- Input Voltage: 3 phase 400 VAC
- Overload Capacity: 150% rated current for 60 seconds
- Control Mode: V/F control, vector control
- Communication Interface: CANopen onboard
- Protection Functions: Short circuit, earth fault, overcurrent, overvoltage, overtemperature
- Enclosure Rating: IP20
- Operating Temperature: 0 °C to +45 °C full power, up to 55 °C with power derating
- Mounting: DIN rail cabinet mounting
Functional Features
- Vector control algorithm provides high starting torque for asynchronous motors.
- Automatic motor identification function detects motor parameters automatically during commissioning.
- Built-in EMC radio frequency interference filter reduces electromagnetic emission.
- Comprehensive electronic protection protects inverter and motor from fault damage.
- CANopen fieldbus interface supports connection with PLC and automation control system.
- Digital and analog input terminals receive external speed reference and run commands.
- Relay output terminal for fault status signal transmission.
- Parameter memory module enables fast parameter copy and replacement.
- S-curve acceleration and deceleration ramps reduce mechanical shock during start and stop.
- Compact cabinet design saves control cabinet installation space.
Application Scenarios
- Conveyor belt speed regulation
- Fan and pump energy saving variable speed control
- Packaging machinery main drive
- Woodworking and plastic processing machine tools
- Material handling lifting equipment
Material Composition
- Housing: Flame-retardant plastic casing
- Main PCB: FR4 high reliability printed circuit board
- Power module: IGBT power semiconductor module
- Heat sink: Aluminum alloy extruded heat sink
- Terminal block: Copper alloy spring wiring terminals
- Cooling fan: DC cooling fan for power section heat dissipation
Structural Characteristics
- Vertical DIN rail modular structure.
- Front cover contains operation keypad and LED status indicators.
- Upper section houses power input and motor output terminals.
- Lower section contains control signal terminals and CANopen communication port.
- Aluminum heat sink mounted on rear side with cooling fan.
- Internal separation between high power power circuit and low voltage control circuit.
Working Principle Three-phase AC input power is rectified to DC bus voltage. IGBT power module generates PWM variable frequency three-phase AC output to drive asynchronous motor. The control board adjusts PWM pulse width and frequency according to speed reference command. Vector control calculates motor flux and torque separately to improve dynamic performance. The protection circuit monitors current, voltage and temperature continuously and triggers shutdown on fault conditions. CANopen bus exchanges data with upper controller.
Installation Requirements
- Install on DIN rail inside control cabinet.
- Maintain top and bottom ventilation clearance for heat dissipation.
- Motor cable use shielded cable, separate routing from signal cables.
- Install input circuit breaker and fuse protection on power supply side.
- Complete cabinet protective earth connection.
- Keep cabinet ambient temperature within rated range.
- Run motor auto-tuning procedure during commissioning.
Usage Notes
- Do not perform megger insulation test on motor with inverter connected.
- Do not exceed rated output current and overload duration.
- Keep cabinet clean from dust and oil contamination.
- Disconnect power supply before opening front cover for maintenance.
- Spare inverters must be stored in dry environment.
- Regularly inspect cooling fan operation and heat sink dust accumulation.
- Parameter modification must stop machine operation to avoid safety risk.
