Description
11LIFT 5.5kW Elevator Inverter – Heavy-Duty Control for Passenger & Cargo Vertical Transportation
The 11LIFT 5.5kW (Drive-5.5KW-4) is a high-torque elevator drive engineered for demanding applications including 10-15 passenger elevators and heavy-duty cargo lifts up to 1000kg capacity. Featuring dual CPU architecture, closed-loop vector control, and 0 Hz 200% torque output, this industrial-grade VFD delivers 13A output current with built-in braking and seamless UPS-backed rescue operation for PMSM gearless motor systems.
Key Features & Industrial Advantages
🎯 Precision Motion Control
- Dual CPU Architecture: Dedicated processors for motor control and elevator logic ensure real-time responsiveness and fail-safe operation under heavy loads
- Closed-Loop Vector Control: Encoder feedback support delivers ±2mm floor leveling accuracy essential for high-rise applications
- 0 Hz 200% Torque: Full holding torque at standstill prevents cabin rollback during heavy cargo loading/unloading
- Anti-Rollback Function: Critical safety protection for permanent magnet synchronous motor (PMSM) gearless elevators
⚡ Built-In Safety & Reliability
- Integrated 5.5kW Brake Unit: Built-in braking resistor control handles high-inertia loads without external components
- Multiple UPS Operation Modes: Automatic rescue operation during power failure ensures passenger evacuation safety per elevator codes
- RS485 Communication Interface: Seamless integration with elevator group control systems and building management platforms
- Removable PG Cards: Hot-swappable encoder interfaces minimize maintenance downtime in commercial buildings
🔧 Heavy-Duty Industrial Design
- 5.5kW High-Torque Output: 13A rated current for 10-15 passenger lifts or 800-1000kg freight elevators
- Three-Phase 380V Input: Standard industrial voltage compatibility (380–440V operating range)
- Optimized S-Curve Profiles: Customizable acceleration/deceleration for smooth heavy-load transport
- Robust Thermal Management: High-capacity cooling for continuous duty in high-traffic installations
Technical Specifications – 11LIFT 5.5kW Model
| Parameter | Drive-5.5KW-4 Specification |
|---|---|
| Model Number | Drive-5.5KW-4 |
| Motor Power | 5.5 kW |
| Power Capacity | 11 kVA |
| Input Voltage | Three-phase 380V (380-440V range) |
| Input Current | 8.9 A |
| Output Current | 13 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 |
11LIFT Series Model Range (For Reference)
| Model | Power | Input Current | Output Current | Application |
|---|---|---|---|---|
| Drive-3.7KW-4 | 3.7 kW | 5.9 A | 9 A | Standard passenger lifts |
| Drive-5.5KW-4 (This Product) | 5.5 kW | 8.9 A | 13 A | Heavy passenger/cargo lifts |
| Drive-7.5KW-4 | 7.5 kW | 20.5 A | 18 A | High-traffic commercial |
| Drive-11KW-4 | 11 kW | 29 A | 27 A | High-rise elevators |
Extended models available: 15kW, 18kW, 22kW, 30kW, 37kW, 45kW, 55kW, 75kW, 90kW, 110kW, 132kW, 160kW. Contact us for heavy-duty industrial freight elevator specifications.
Ideal Applications for 5.5kW Model
- High-Traffic Passenger Elevators: 10-15 person capacity in commercial buildings, hotels, and residential towers
- Heavy-Duty Cargo Lifts: 800-1000kg freight capacity for warehouses, factories, and retail distribution centers
- Hospital Service Lifts: Medical equipment and bed transport with high reliability requirements
- Automotive Elevators: Car lifts in parking garages and showrooms requiring high starting torque
- Industrial Platform Lifts: Manufacturing and logistics applications with frequent heavy-load cycles
Frequently Asked Questions
Does the 11LIFT 5.5kW require an external brake resistor for heavy loads?
No. The Drive-5.5KW-4 includes a built-in brake unit rated for the full 5.5kW motor capacity. The integrated braking system handles regenerative energy from heavy cargo deceleration without external components. For extreme applications with very high duty cycles (e.g., freight elevators with 200+ cycles/hour), consult our engineers about enhanced braking configurations.
How does the UPS rescue operation work during power failure?
The 11LIFT 5.5kW supports multiple UPS operation modes including automatic rescue, manual rescue, and fire emergency operation. When connected to a UPS or battery backup system, the inverter detects power loss and initiates controlled descent to the nearest floor at reduced speed. The dual CPU architecture ensures safe door zone detection and release even during emergency power conditions—meeting elevator safety code requirements for passenger evacuation.
Is this 5.5kW inverter suitable for gearless PMSM motors in high-rise buildings?
Yes. The 11LIFT 5.5kW is specifically engineered for permanent magnet synchronous motor (PMSM) gearless elevators in mid-to-high-rise applications. The 13A output current provides sufficient torque for 1.0-1.75 m/s speed elevators up to 30+ floors. The dedicated anti-rollback function prevents cabin movement when brakes release during door operation—critical for gearless systems. Closed-loop encoder feedback ensures precise floor leveling (±2mm) required for high-rise installations.
What is the difference between the 5.5kW and smaller 3.7kW models?
The Drive-5.5KW-4 delivers 44% more output current (13A vs 9A), enabling heavier load capacity and faster acceleration profiles. While the 3.7kW suits standard 6-8 passenger lifts, the 5.5kW handles 10-15 passengers or 800-1000kg cargo. Both share the same dual CPU architecture and built-in brake, but the 5.5kW features enhanced thermal management for continuous heavy-duty operation. The 8.9A input current remains efficient for its output capacity.
Can I retrofit this inverter to replace an old DC drive or induction motor VFD?
Yes. The 11LIFT 5.5kW supports both PMSM gearless and traditional induction motors in open-loop mode, making it ideal for elevator modernization projects. When upgrading from DC drives or older AC VFDs, the RS485 interface integrates with existing controller logic. The removable PG cards accommodate various encoder types (SinCos, TTL, HTL) common in retrofit applications. Contact our technical team for parameter migration assistance from legacy drive systems.
Need Technical Support or Heavy-Duty Elevator Solutions?
Our engineering team provides complete drive sizing, parameter configuration, and integration support for new installations and heavy-load elevator modernization projects.
Request 5.5kW Elevator Drive Quote
📞 Direct technical support: +86 18357241165 (WeChat/WhatsApp)
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