OTIS DAA20220DY Traction Motor

OTIS DAA20220DY Traction Motor

OTIS DAA20220DY traction motor is a powerhouse engineered for high-capacity and high-speed vertical transportation in modern high-rise buildings. This robust machine serves as the critical heart of the elevator system, providing the reliable force needed to move elevator cars efficiently and safely. Designed for performance and durability, it meets the rigorous demands of both intensive commercial building applications and large-scale residential buildings.

This model is defined by its exceptional strength, supporting a wide rated payload range from 8000kg to 1150kg. This immense weight capacity makes it suitable for moving heavy loads and accommodating high passenger traffic with ease. Paired with a rated speed of 2.0m/s to 2.5m/s, it ensures swift transit between floors, significantly reducing wait times and improving the flow of people. The motor's core performance is driven by its 32 motor poles, which guarantee exceptionally smooth and precise control during acceleration and deceleration, delivering a premium ride experience.

Built to last in the challenging environment of an elevator machine room, the DAA20220DY features a Protection Class of IP41. This rating ensures its internal elevator components are shielded against contact with solid objects and protected from falling drops of water, guaranteeing operational integrity. Furthermore, its Insulation Class: F construction allows the motor windings to withstand elevated temperatures, promoting enhanced longevity and consistent performance under heavy, intermittent use.

A standout feature of this motor is its tremendous structural capacity, with a maximum axial load of 3,500 kg. This exceptional rating underscores its ability to handle the intense mechanical stresses found in traction elevator systems configured for skyscrapers. It is recommended for a lifting height of up to 135 meters, solidifying its position as a top-tier solution for high-rise buildings. The fail-safe braking system is precisely calibrated for this duty, featuring dual-arm brakes providing a braking force between 1,100 Nm and 1,450 Nm, operated by a brake current of 1.53 A (at 20°C).

OTIS DAA20220DY operates on an S5 40% duty cycle, a standard for elevator applications. This cycle involves sequences of starting, running at constant load, electric braking, and rest. This specific operating mode is engineered to optimize performance and manage energy consumption effectively, contributing to the overall efficiency of the building's transportation system. In essence, the DAA20220DY traction machine is a benchmark of power, reliability, and engineering excellence for demanding vertical mobility solutions.

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Question and Answer (Q/A) about OTIS Traction Motor

Q1: What type of buildings is the OTIS DAA20220DY traction motor best suited for?
A1: This motor is specifically engineered for high-rise commercial and residential buildings that require a high-capacity, high-speed elevator solution. Its 135-meter lifting height and ability to handle heavy payloads make it ideal for skyscrapers, large office towers, and dense residential apartments.

Q2: The payload range is listed as 8000kg-1150kg. Could you clarify this wide range?
A2: This range indicates the motor's versatility across different elevator configurations. The system can be configured and geared to optimally handle a maximum payload of up to 8000kg for heavy freight applications or, with different gearing, operate efficiently at a standard high-capacity passenger rating of 1150kg at higher speeds.

Q3: How does the 32-pole motor design benefit a high-speed elevator?
A3: A high number of poles (32) allows for finer control of the magnetic field within the motor. This results in incredibly smooth torque production, which translates to seamless acceleration and deceleration. For passengers, this means a very comfortable, jerk-free ride even at speeds of 2.5m/s.

Q4: Why is the maximum axial load rating (3,500 kg) an important specification?
A4: The axial load is the force applied along the motor's shaft by the elevator ropes and the weight of the car and counterweight. A high rating of 3,500 kg means the motor's bearings and structural components are built to withstand immense force, ensuring mechanical integrity, reducing wear, and guaranteeing safety and longevity in tall buildings.

Q5: How does the S5 40% duty cycle relate to real-world elevator operation?
A5: Elevators don't run continuously; they operate in short, repetitive cycles. The S5 40% mode means the motor is designed to work for a period (accelerating, running, braking) and then rest for a period that is 40% of the total cycle time. This design prevents overheating and is perfectly matched to the stop-start nature of elevator service, optimizing its lifespan.