STEP AS380 Elevator Inverter

STEP AS380 is specifically engineered to be the core “heart and brain” inside the elevator control cabinet. In traditional elevator setups, a control cabinet has to house two separate, bulky components: a logic controller board (the brain) and a separate variable frequency inverter (the muscle). They require a massive maze of wiring to talk to each other. AS380 changes the game for control cabinet builders and maintenance teams by integrating both into one compact housing. AS380 is not just a standard variable frequency drive; it functions as the central nervous system of the elevator group.

STEP AS380 Main Features:

• Prefect integration of control and drive of elevator leads to compact structure, few wiring, high reliability, easy operation and cost efficiency
• Double 32-bit MCU combines the elevator control and motor control
• Redundant safety design, double safety protection for control and drive
• CAN bus communication make the whole system easily, fast and reliable.
• Support traditional group control and destination dispatching controlSupport one main contactor solution
• Support gear and gearless motor
• Use PIM module, lower loss in switch on and off and longer lifetime,
• Creative Zero-speed torque compensation technology provides the elevatorswith good starting ride quality without installing weighing devicesClose-loop vector brings higher performance in control
• New PWM dead-zone compensation technology brings less energy loss
• Dynamic PWM carrier modulation technology brings less motor noise

Dual 32-Bit Embedded Microprocessors

At the core of the AS380, two high-speed 32-bit embedded processors operate simultaneously. One processor handles advanced motor vector control calculations, while the second manages complex elevator logic safety strings, hall calls, and leveling data. This dual-core topology features a redundant safety architecture. If either processor detects a processing discrepancy, the system safely triggers a controlled deceleration stop, protecting passengers from unexpected movement.

6th-Generation Industrial Hardware Modules

To handle high thermal stress in non-stop transit hubs, the AS380 utilizes premium 6th-generation insulated-gate bipolar transistor (IGBT) power modules. These advanced semiconductors boast a maximum junction temperature resistance of up to 175°C. By drastically reducing internal switching and conduction losses, the drive operates coolly, minimizing the load on cabinet cooling fans and extending the overall operating lifespan of the control cabinet.

Full CAN-Bus Serial Communication Network

Traditional control panels require thick, heavy wiring harnesses running from the machine room down to the car operating panels (COP) and landing operating panels (LOP). The AS380 replaces this messy configuration with a highly reliable CAN-Bus serial communication system. By transmitting commands over a single twisted-pair network cable, it simplifies system wiring by more than 70 percent, eliminates electromagnetic interference, and allows real-time diagnostics for up to 64 floors.

Advanced PWM Dead-Time Compensation & Noise Reduction

A common issue with older lift inverters is high-frequency motor hum, which resonates through the lift car and frustrates passengers. The AS380 features a new Pulse Width Modulation (PWM) dead-time compensation algorithm. This smooths out the output current waveform, reduces magnetic harmonic distortion in the motor windings, and results in near-silent traction machine operation.

STEP AS380 Technical Specifications & Sizing Data

Choosing the correct power rating is essential to prevent premature component fatigue or over-current tripping. Below are the standard 200V-400V-class three-phase models available for fast global shipping:

System Integration: Split VFD vs. STEP AS380 Integrated Drive

Understanding the performance gains of an integrated architecture helps clarify why the AS380 is a preferred choice for engineering modernizations.

• Motor Compatibility: Traditional VFDs require specialized firmware updates to swap between older induction motors and newer Permanent Magnet Synchronous Motors (PMSM). The AS380 features built-in close-loop vector algorithms supporting both motor topologies natively.

• Startup Torque Performance: Standard inverters often experience a slight rollback when the mechanical brakes release. The AS380 utilizes a highly precise PG encoder card interface, delivering 150 percent torque at 0 Hz to guarantee perfectly smooth, rollback-free acceleration.

• Speed Control Precision: While standard systems fluctuate under varying load capacities, the AS380 maintains a tight speed control precision of $\pm0.02\%$, providing consistent floor-leveling accuracy within 2 millimeters.

• Safety Compliance: AS380 carries full CE certification for “Elevator Safety Circuits with Electronic Components,” drastically simplifying local building code inspections and compliance checks.

Frequently Asked Questions (FAQ)

Can the STEP AS380 handle group control for multiple lifts?

Yes. AS380 features integrated group control capabilities out of the box, supporting the efficient dispatching of up to 8 individual lift units simultaneously without requiring an expensive external group control board.

What input voltage variations does the 400V series support?

The 400V-class models accept a baseline range of three-phase 380V / 400V / 415V / 440V / 460V at 50/60Hz. It features an allowable voltage fluctuation range of -15 percent to +10 percent to protect against local power grid instability.

Why do I need to supply the specific software protocol before ordering?

Because AS380 is an integrated logic controller, its internal chips run custom firmware protocols that communicate with the lift car boards. When placing a wholesale order at liftpartscn.com, please provide your elevator brand’s protocol (e.g., standard STEP open protocol or specific factory brand locks) so our technicians can flash the exact software required for immediate plug-and-play installation.

Does the drive include an internal braking unit?

Yes. AS380 contains a built-in internal braking unit for standard setups. For high-rise or heavy-capacity freight applications, you simply connect an external dynamic braking resistor to the dedicated terminals to safely dissipate regenerative braking energy.

Conclusion

STEP AS380 Elevator Integrated Drive Controller represents a massive leap forward in elevator reliability, structural simplicity, and ride comfort. By eliminating external inter-card wiring and pairing dual 32-bit processors with robust 6th-gen IGBT modules, it reduces maintenance overhead and guarantees long-term operational up-time. For B2B buyers, importing this unified system cuts installation time in half, providing an excellent value proposition for both new installations and modernization projects.

We understand that industrial procurement demands absolute consistency, high technical compliance, and clear communication. From our Ningbo logistics hubs and specialized Thailand manufacturing facilities, we deliver fully tested, certified STEP components with full global warranty protections.