Arkel ADrive 4B075 7.5 kW VVVF Elevator Inverter (400V)

The Arkel ADrive 4B075 is a high-performance Variable Voltage Variable Frequency (VVVF) drive designed specifically for vertical transportation. Rated at 7.5 kW (10 HP) with a nominal output current of 17 A, this unit provides precise control for both synchronous (gearless) and asynchronous (geared) motors. It is the ideal solution for modernization projects and new installations requiring superior ride comfort, energy efficiency, and reliable safety features.

Technical Specifications: ADrive 4B075

Product Description

The Arkel ADrive 4B075 establishes a benchmark for reliability and versatility in elevator drive technology. Engineered to handle 7.5 kW loads in the 400V class, it serves as the core of modern lift control systems. Its robust “Size-B” chassis design ensures durability while fitting efficiently into standard control cabinets.

Seamless Motor Integration: Whether modernizing an older building with a geared induction motor or installing a state-of-the-art MRL system with a Permanent Magnet (PM) machine, the ADrive 4B075 adapts effortlessly. For gearless applications, the optional ENCABIT-Plus module enables communication with absolute encoders (EnDat, SSI, SinCos, BiSS), ensuring millimeter-precise floor leveling and ultra-smooth ride quality,.

Advanced Safety and Rescue: Safety is intrinsic to the ADrive architecture. The unit features built-in support for emergency evacuation. In the event of a mains power loss, the drive can be powered by a 60-120V DC battery bank or a standard UPS. It intelligently calculates the “easy direction” (the direction requiring less torque) to move the cabin to the nearest floor, ensuring passengers are never trapped,.

User-Friendly Commissioning: Technicians benefit from Arkel’s intuitive interface. The drive supports Static Auto-Tuning, which eliminates the need to unrope the elevator during setup—a significant time-saver during commissioning,. Additionally, parameters can be easily transferred between units using the Arkel Data Key, simplifying fleet management and maintenance.

Frequently Asked Questions (FAQs)

Q1: Is an additional card required to use the ADrive 4B075 with a gearless (synchronous) motor?

Yes. To drive synchronous motors with absolute encoders, the ENCABIT-Plus option card must be installed on the ADrive 4B075. This card acts as the interface for absolute encoder protocols like EnDat and SSI,.

Q2: Can this inverter perform rescue operations without a UPS?

Yes. The ADrive 4B075 supports direct DC supply for evacuation. You can connect a 60V to 120V DC battery pack directly to the power terminals to perform rescue operations in the lower-load direction,.

Q3: What braking resistor should be used with the ADrive 4B075?

For the 7.5 kW model, a braking resistor with a specification of 50 Ohm / 1000 W (Type-A) is recommended to safely dissipate regenerative energy during deceleration,.

Q4: How does the “Anti-Rollback” feature work? The anti-rollback controller applies a pre-torque to the motor at the moment of brake release. This holds the cabin steady at zero speed for a brief moment, preventing the unpleasant “drop” or rollback sensation often felt when the mechanical brake opens,.

ADrive Models: