The 11LIFT 4kW (Drive-4KW-4) is a high-performance elevator drive engineered for smooth operation of passenger and cargo elevators up to 4kW motor capacity. Featuring dual CPU architecture, closed-loop vector control, and 0 Hz 200% torque output, this industrial-grade VFD ensures precise floor leveling, robust safety, and seamless UPS-backed rescue operation for PMSM gearless motor systems.
| Parameter | Drive-4KW-4 Specification |
|---|---|
| Model Number | Drive-4KW-4 |
| Motor Power | 4 kW |
| Power Capacity | 8.5 kVA |
| Input Voltage | Three-phase 380V (380-440V range) |
| Input Current | 8.5 A |
| Output Current | 9.5 A |
| Control Method | Closed-loop & Open-loop vector |
| Torque Characteristic | 0 Hz 200% torque output |
| Brake Unit | Built-in (standard) |
| Communication | RS485 |
| UPS Operation | Multiple modes supported |
| CPU Architecture | Dual CPU |
| Motor Support | PMSM gearless / Induction motors |
| PG Card | Removable / Field-replaceable |
| Model | Power | Input Current | Output Current | Application |
|---|---|---|---|---|
| Drive-2.2KW-4 | 2.2 kW | 6.5 A | 5.1 A | Small passenger lifts |
| Drive-4KW-4 (This Product) | 4 kW | 8.5 A | 9.5 A | Mid-range passenger/cargo |
| Drive-5.5KW-4 | 5.5 kW | 8.9 A | 13 A | Heavy-duty cargo lifts |
| Drive-7.5KW-4 | 7.5 kW | 20.5 A | 18 A | Commercial elevators |
Extended models available up to 160kW for heavy-duty industrial freight elevators. Contact us for complete series specifications.
No. The Drive-4KW-4 includes a built-in brake unit as standard equipment. The integrated braking control handles regenerative energy from 4kW motors during deceleration, eliminating the need for external resistors and reducing installation costs. For applications with exceptionally high duty cycles or rapid deceleration requirements, optional external braking resistors can be configured.
The 11LIFT 4kW supports multiple UPS (Uninterruptible Power Supply) operation modes. When connected to a UPS or battery backup system (not included), the inverter automatically detects power loss and switches to rescue mode. The system slowly moves the elevator cabin to the nearest floor, opens the doors, and releases passengers safely. This function is critical for passenger safety codes in most jurisdictions.
Yes. The 11LIFT 4kW is specifically optimized for permanent magnet synchronous motor (PMSM) gearless elevators. It includes dedicated anti-rollback protection that prevents cabin movement when the mechanical brake is released during door operation—essential for gearless systems. The closed-loop control mode supports encoder feedback from PMSM motors for precise speed and position control.
Closed-loop control uses encoder feedback from the motor to precisely regulate speed and position, providing ±2mm floor leveling accuracy required for passenger elevators. Open-loop control operates without encoder feedback, suitable for simpler cargo lifts or induction motor applications where extreme precision is less critical. The 11LIFT 4kW supports both modes, configured via parameter settings.
Yes. The RS485 communication interface supports standard elevator industry protocols, allowing integration with most modern elevator control systems. The dual CPU architecture dedicates one processor to motor control and another to elevator logic communication, ensuring real-time responsiveness without interference. Contact our technical team for specific compatibility verification with your controller brand.
Our engineering team provides complete drive sizing, parameter configuration, and integration support for new installations and elevator modernization projects.
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📞 Direct technical support: +86 18357241165 (WeChat/WhatsApp)
| Power Rate | 4kw Closed-loop |
Our engineers will recommend the right configuration for your application.
📞 +86 183 5724 1165 (WeChat / WhatsApp) | ✉️ info@vfdinverters.com
