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Genuine OTIS GAA24350BP1 AT120 Door Inverter VVVF Drive PCB with Plug-and-play and Sinusoidal PWM Co

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December 16, 2025
Category Connection: Elevator Spare Parts
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#Elevator Spare Parts #Elevator Spare Parts Supplier #Lift Spare Parts
Brief: In this video, we take a focused look at the specifications and what they mean in practice for the Genuine OTIS GAA24350BP1 AT120 Door Inverter VVVF Drive PCB. You'll see how this plug-and-play board delivers smooth, whisper-quiet sinusoidal PWM control for OTIS AT120 door operators, learn about its universal encoder port and key protections, and understand its installation requirements for certified technicians.
Related Product Features:
  • Genuine OTIS OEM part with identical footprint and connector layout for direct plug-and-play replacement.
  • Features VVVF drive technology with sinusoidal PWM control for smooth, quiet door operation under 50 dB.
  • Supports a wide range of passenger elevators from 320 kg to 2,500 kg capacity.
  • Compatible with both side-opening and center-opening door operator systems.
  • Includes comprehensive protections for over-current, over-temperature, short-circuit, and encoder failure.
  • Universal encoder port supports both TTL and resolver feedback types for flexible integration.
  • Field-updatable firmware via OTIS service tool for easy maintenance and updates.
  • Certified with CE, UL recognition, and ISO 9001, ensuring global compliance and reliability.
Faqs:
  • What elevator models is the GAA24350BP1 door inverter compatible with?
    The GAA24350BP1 is designed for OTIS AT120 door operators and is compatible with passenger elevators ranging from 320 kg to 2,500 kg capacity, supporting both side-opening and center-opening doors.
  • Does this inverter support different types of encoder feedback?
    Yes, it features a universal encoder port that supports both TTL and resolver feedback types, providing flexibility for various installation requirements.
  • What are the key protection features of this VVVF drive PCB?
    The board includes multiple protection mechanisms against over-current, over-temperature, short-circuit, and encoder failure, ensuring safe and reliable operation in elevator door systems.
  • Is professional installation required for the GAA24350BP1?
    Yes, installation must be performed by certified technicians, and it is crucial to verify the encoder type before powering up the system to ensure proper functionality.
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