Description
11LIFT 7.5kW Elevator Inverter – High-Capacity Control for Commercial Vertical Transportation
The 11LIFT 7.5kW (Drive-7.5KW-4) is a heavy-duty elevator drive engineered for high-traffic commercial applications including 15-21 passenger elevators and industrial cargo lifts up to 1500kg capacity. Featuring dual CPU architecture, closed-loop vector control, and 0 Hz 200% torque output, this industrial-grade VFD delivers 18A output current with 11kVA power capacity, 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 under continuous high-traffic operation
- Closed-Loop Vector Control: Encoder feedback delivers ±2mm floor leveling accuracy for high-rise commercial and hospital elevators
- 0 Hz 200% Torque: Full holding torque at standstill prevents cabin rollback during heavy passenger or cargo loading
- Anti-Rollback Function: Critical safety protection for permanent magnet synchronous motor (PMSM) gearless elevators in high-rise buildings
⚡ Built-In Safety & Reliability
- Integrated 7.5kW Brake Unit: Built-in braking resistor control handles high-inertia deceleration without external components
- Multiple UPS Operation Modes: Automatic rescue operation during power failure ensures code-compliant passenger evacuation
- RS485 Communication Interface: Seamless integration with elevator group control systems and building automation networks
- Removable PG Cards: Hot-swappable encoder interfaces minimize downtime in 24/7 commercial operations
🔧 High-Capacity Industrial Design
- 7.5kW High-Torque Output: 18A rated current for 15-21 passenger lifts or 1000-1500kg freight elevators
- 11kVA Power Capacity: Robust power handling for sustained high-duty-cycle operation
- Three-Phase 380V Input: Standard industrial voltage compatibility (380–440V operating range)
- Optimized for High-Traffic: 20.5A input current with efficient power conversion for continuous commercial use
Technical Specifications – 11LIFT 7.5kW Model
| Parameter | Drive-7.5KW-4 Specification |
|---|---|
| Model Number | Drive-7.5KW-4 |
| Motor Power | 7.5 kW |
| Power Capacity | 11 kVA |
| Input Voltage | Three-phase 380V (380-440V range) |
| Input Current | 20.5 A |
| Output Current | 18 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 | kVA | Application |
|---|---|---|---|---|---|
| Drive-5.5KW-4 | 5.5 kW | 8.9 A | 13 A | 11 | Heavy passenger/cargo |
| Drive-7.5KW-4 (This Product) | 7.5 kW | 20.5 A | 18 A | 11 | High-traffic commercial |
| Drive-11KW-4 | 11 kW | 29 A | 27 A | 17 | High-rise buildings |
| Drive-15KW-4 | 15 kW | 36 A | 33 A | 21 | Heavy industrial freight |
Extended models available: 18kW, 22kW, 30kW, 37kW, 45kW, 55kW, 75kW, 90kW, 110kW, 132kW, 160kW. Contact us for super heavy-duty industrial freight elevator specifications.
Ideal Applications for 7.5kW Model
- High-Traffic Commercial Elevators: 15-21 passenger capacity in office towers, hotels, and shopping centers with continuous operation
- Hospital Service Lifts: Critical medical transport with 100% duty cycle reliability requirements
- Industrial Cargo Lifts: 1000-1500kg freight capacity for manufacturing facilities and warehouse distribution
- High-Rise Residential: 20+ floor residential towers requiring sustained high-speed operation
- Automotive Service Lifts: Heavy vehicle transport in parking garages and service centers
Frequently Asked Questions
Why does the 7.5kW model have the same 11kVA capacity as the 5.5kW model?
The Drive-7.5KW-4 and Drive-5.5KW-4 both utilize 11kVA power capacity but serve different operational profiles. The 7.5kW model delivers higher peak output current (18A vs 13A) for heavier loads and faster acceleration, while the 5.5kW is optimized for efficiency at lower power. The 7.5kW’s 20.5A input current reflects its higher power delivery capability—ideal for high-traffic elevators requiring frequent starts/stops with heavy passenger loads. Both models share the same robust platform architecture.
Is the 18A output sufficient for high-rise elevators with 2.5m/s speed?
Yes. The 18A output current at 7.5kW supports elevator speeds up to 2.5m/s for cabins up to 1500kg in high-rise applications. The closed-loop vector control maintains precise speed regulation across the full height of tall buildings, while the 0 Hz 200% torque ensures smooth starting even with unbalanced loads. For super high-speed applications (3.0m/s+) or capacities exceeding 1500kg, consider the 11kW or 15kW models in the 11LIFT series.
How does the dual CPU architecture improve reliability for 24/7 operations?
The dual CPU design dedicates one processor exclusively to motor control (torque, speed, position) and another to elevator logic communication (door control, safety circuits, group dispatch). This separation prevents communication delays from affecting motor performance during high-traffic periods. If one CPU encounters an anomaly, the other maintains safety supervision. For commercial buildings requiring 24/7 operation, this architecture provides the redundancy and real-time responsiveness critical for minimizing downtime.
Can this 7.5kW inverter handle regenerative energy from heavy descending loads?
Yes. The built-in brake unit handles regenerative energy from the 7.5kW motor during heavy cargo or passenger descent. For applications with exceptionally high regenerative loads (e.g., freight elevators with heavy counterweights or continuous downward traffic), the 11kVA power capacity provides headroom, and external braking resistors can be added if calculated duty cycles exceed internal brake ratings. Our engineers can calculate exact braking requirements based on your load profile.
What encoder types are supported with the removable PG cards?
The removable PG card design supports multiple encoder interfaces including SinCos (1Vpp), TTL (RS422), HTL (push-pull), and resolver inputs—accommodating both legacy induction motor retrofits and modern PMSM gearless installations. Field replacement takes under 5 minutes without removing the main drive, minimizing downtime in critical commercial operations. Specify your motor encoder type when ordering, and we pre-configure the appropriate PG card.
Need Technical Support or High-Capacity Elevator Solutions?
Our engineering team provides complete drive sizing, parameter configuration, and integration support for high-traffic commercial installations and heavy-duty industrial elevators.
Request 7.5kW Elevator Drive Quote
📞 Direct technical support: +86 18357241165 (WeChat/WhatsApp)
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