ABB NPBU-42C 64011821D
ABB NPBU-42C 64011821D
ABB NPBU-42C 64011821D
ABB NPBU-42C 64011821D
ABB NPBU-42C 64011821D
ABB NPBU-42C 64011821D
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    Discontinued / Obsolete by OEM
    Apter Power provides rare ABB communication boards to preserve stable industrial network linking. 

NPBU-42C 64011821D

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The ABB NPBU-42C 64011821D PPCS branching unit distributes optical PPCS control signals from the control unit to parallel-connected inverter or IGBT supply modules.
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Technical specifications for NPBU-42C 64011821D

  • Manufacturer:
    ABB
  • Part Number:
    NPBU-42C 64011821D
  • Product Family:
    ABB Drives
  • Product Type:
    PPCS Branching Unit
  • Stock:
    1
  • Un/V:
    24
  • In/mA:
    200
  • Imax/mA:
    235
  • Communication protocol:
    PPCS protocol
  • Operating temperature:
    0°C to +50°C
  • Storage temperature:
    -40°C to +70°C
  • Relative humidity:
    5% to 95% (non-condensing)
  • Weight:
    0.7 kg
  • Estimated shipping dimensions:
    26.4x9.5x5cm
  • Tariff Code:
    8454301090
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Application Scenarios Communication Connectivity

Features:

  • Routes PPCS control signals from the RDCU to multiple inverter or IGBT supply modules through reliable optical communication.
  • Controls up to four parallel-connected modules from a single branching unit, simplifying system expansion.
  • Maintains dependable optical data transmission while operating across a wide industrial temperature and humidity range.
ABB NPBU-42C 64011821D is used in drive systems that require coordinated communication between the control unit and multiple power modules. By distributing optical PPCS signals, the unit enables synchronized operation of parallel-connected inverter and IGBT supply modules. The branching architecture simplifies communication management while maintaining reliable signal integrity.

Applications using parallel-connected R8i IGBT supply units require a branching unit to distribute control commands correctly. ABB NPBU-42C 64011821D fulfills this requirement by transmitting signals from the RDCU to individual modules through the NDCU communication structure. One unit supports as many as four connected modules, providing an efficient solution for larger power configurations.

Industrial environments demand reliable communication equipment capable of continuous operation. ABB NPBU-42C 64011821D combines 24 V operation, PPCS optical communication, and broad environmental specifications to support dependable system performance. The unit is an effective choice wherever stable control signal distribution is essential for high-power ABB drive applications.

The NPBU-42C 64011821D ABB PPCS Branching Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
ABB NPBU-42C 64011821D PPCS Branching Unit Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
ABB NPBU-42C 64011821D PPCS Branching Unit Specs

General

  • Manufacturer ABB
  • Model NPBU-42C 64011821D
  • Condition New Original ready stock
  • Product Family NPBU-42,NPBU-41
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Multi-drive Distribution: Used for fiber optic signal splitting in large multi-drive frequency converter systems.
  • Inverter Parallel Connection: Used for parallel communication of multiple inverter modules in high-power wind power inverters or main hoists.
  • Network Optical Isolation: Used for high and low voltage electrical isolation in high-voltage frequency converter cabinets under strong electromagnetic interference environments.
  • Metallurgical Drive Maintenance: Used for fault replacement of fiber optic boards in the control systems of large rolling mills in steel mills, paper mills, etc.
  • Network Layer: Dedicated to high-speed star communication topology between the drive unit and the main control level.
  • Transmission Characteristics: Features zero-latency synchronous optical signal broadcasting and fan-out mechanism.
  • Protocol Support: The underlying hardware is perfectly adapted to low-latency DriveBus or PPCS protocol links.
  • Clock Synchronization: An internally integrated high-precision clock distributor ensures synchronization of multiple inverter axes.
  • Fiber Optic Media: Fully compatible with 1.0 mm standard plastic fiber (POF) and hard-clad silica fiber.
  • Port Configuration: Onboard 1 set of main control uplink fiber optic ports and 4 sets of branch downlink fiber optic ports.
  • Connection Distance: Supports a maximum transmission distance of 10 meters per segment when using standard plastic optical fiber.
  • Power Access: Equipped with an industrial-grade, solderless 24V DC power supply terminal block with screw locking.
Description
The ABB NPBU-42C 64011821D is a PPCS branching unit designed for optical communication within ABB drive systems. Acting as an optical branching unit, ABB NPBU-42C 64011821D connects parallel-connected inverter modules or IGBT supply modules to the NDCU through the PPCS communication protocol. Operating with a 24 V supply, a rated current of 200 mA, and a maximum current of 235 mA, the unit provides dependable signal distribution for power conversion systems.

ABB NPBU-42C 64011821D distributes control signals received from the RDCU to individual rectifier or inverter modules. One branching unit can control up to four parallel-connected modules, making it suitable for applications using multiple IGBT supply modules. For systems with parallel-connected R8i IGBT supply units, installation of a branching unit is required to ensure correct signal distribution and coordinated module operation. Optical communication minimizes interference while maintaining stable data transmission between the controller and connected modules.

Engineered for industrial environments, ABB NPBU-42C 64011821D supports operation from 0°C to +50°C and storage from -40°C to +70°C. The unit also withstands relative humidity from 5% to 95% without condensation. ABB offers two branching unit versions for these applications: NPBU-42C and APBU-44C. While both provide signal distribution, the APBU-44C additionally incorporates a data logger capable of storing module fault diagnostic information, whereas ABB NPBU-42C 64011821D focuses on reliable optical PPCS communication and branching functions.
Alternative Names
NPBU-42C 64O11821D NPBU-42C 640II821D NPBU42C 64011821D NPBU-42 NPBU-41 NDBU-91 NDBU-85 NDBU-95
Technical notes
The ABB NPBU-42C (64011821D) operates as a high-speed PPCS branching unit designed to split a single optical control link into 4 parallel branches. It ensures deterministic, real-time synchronization between the master controller and multiple inverter units in sophisticated multi-drive topologies. 
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How many modules can ABB NPBU-42C 64011821D control?
ABB NPBU-42C 64011821D can distribute control signals to as many as four parallel-connected modules from a single branching unit.
Can ABB NPBU-42C 64011821D be used with parallel-connected R8i IGBT supply units?
Yes. Parallel-connected R8i IGBT supply units require a branching unit, and ABB NPBU-42C 64011821D fulfills this signal distribution function.
What function does ABB NPBU-42C 64011821D perform?
ABB NPBU-42C 64011821D distributes optical PPCS control signals from the RDCU to parallel-connected inverter modules or IGBT supply modules connected to the NDCU.