ABB NDBU-95C 64008366D
ABB NDBU-95C 64008366D
ABB NDBU-95C 64008366D
ABB NDBU-95C 64008366D
ABB NDBU-95C 64008366D
ABB NDBU-95C 64008366D
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NDBU-95C 64008366D

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The ABB NDBU-95C (part number 64008366D) is a 9-channel Fibre Channel DDCS branch unit designed for ACS800 and DCS800 drive systems to achieve high-speed and stable signal branching and networking transmission.
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Technical specifications for NDBU-95C 64008366D

  • Manufacturer:
    ABB
  • Part Number:
    NDBU-95C 64008366D
  • Product Family:
    ABB Drives
  • Product Type:
    DDCS Branching Unit
  • Stock:
    1
  • Fiber Optic Channels:
    9 channels
  • Data Rate:
    10 Mbps
  • Operating Temperature:
    0°C to +55°C (+32°F to +131°F)
  • Storage Temperature:
    -40°C to +70°C (-40°F to +158°F)
  • Humidity:
    5-95% RH, non-condensing
  • Application:
    Drive communication systems in ACS800, DCS800
  • Weight:
    0.7 kg
  • Estimated shipping dimensions:
    26.3x9.5x5cm
  • Tariff Code:
    8415909000
  • 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 Connection Installation

Features:

  • Provides nine fiber optic channels for distributing DDCS communication across drive system connections.
  • Supports a 10 Mbps data rate for communication applications involving ACS800 and DCS800 systems.
  • Uses configurable addressing through DIP switch S1 to organize multiple branching units within a defined hierarchy.
ABB NDBU-95C 64008366D serves as a communication distribution component within DDCS-based drive installations. By creating multiple fiber optic communication branches from a central point, the branching unit helps organize connections between equipment in larger drive configurations. Fiber optic communication is particularly useful where drive components need to exchange data through dedicated optical links. The nine-channel arrangement makes the unit suitable for systems requiring several communication paths from one branching location.

System topology is an important consideration when integrating ABB NDBU-95C 64008366D into an existing drive network. Each branching unit occupies a defined position in the communication hierarchy, allowing installations with multiple units to maintain an organized structure. Address selection through DIP switch S1 provides a hardware-based method for establishing the required order. The branching unit located closest to the PC receives the highest address, while other units are arranged according to their positions in the hierarchy. Proper configuration therefore forms an important part of system commissioning and network organization.

In ACS800 and DCS800 applications, ABB NDBU-95C 64008366D can provide a practical way to expand and structure DDCS communication connections. The unit is useful when several drive-related devices need to participate in a fiber optic communication arrangement without relying on a single direct connection path. Its role centers on communication branching rather than drive control or power conversion, making correct network placement important during installation. With an operating range of 0°C to +55°C, storage capability from -40°C to +70°C, and 5% to 95% non-condensing relative humidity, the branching unit can be integrated into industrial control environments within the specified conditions.

The NDBU-95C 64008366D ABB DDCS Branching Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
ABB NDBU-95C 64008366D DDCS 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 NDBU-95C 64008366D DDCS Branching Unit Specs

General

  • Manufacturer ABB
  • Model NDBU-95C 64008366D
  • Condition New Original ready stock
  • Product Family NDBU-85,NDBU-85C,NDBU-95
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-Inverter Group Control: Primarily used in the synchronous control of the inverter power panel by the main control unit in large multi-drive industrial frequency converter arrays such as ABB ACS800 and ACS600.
  • Industrial Network Branch: Serving as a fiber optic repeater station between the DCS drive-level control layer and the field drive chain in large-scale distributed automated production lines in metallurgy, papermaking, and other industries.
  • High-voltage, high-noise isolation: Deployed in high-voltage substation control cabinets or medium-voltage, high-power rectifier workshops, it achieves insulation between the control end and the high-voltage, high-noise interference end through optical communication.
  • Drive system spare parts modification: As an original equipment manufacturer (OEM) spare part for mainstream industrial field operating systems, it is used to replace old or optical flux-attenuated data splitter cards of the same model.
  • Communication Bus Allocation: Receives one DDCS communication protocol signal from the main control board and splits it into equal signals through an internal star topology network.
  • Fiber Channel Expansion: Provides up to 9 independent fiber optic serial channel interfaces, enabling parallel high-speed data connections from a single master station to multiple slave stations.
  • Media Physical Compatibility: Fully supports both Plastic Fiber (POF) and High-Strength Glass Fiber (HCS), using dedicated miniature fiber optic connectors for mating.
  • Master-Slave Topology Adaptation: Features a proprietary optoelectronic data isolation and signal regeneration forwarding mechanism to ensure zero packet loss in long-distance, high-bandwidth optical communication links.
  • Structural Positioning Specifications: Employs a compact physical frame design with a standard 35mm DIN rail slot integrated on the back for one-click rail clamping.
  • Spatial Heat Dissipation Allowance: At least 50 mm of air convection clearance must be reserved around the module to prevent heat accumulation in the high-density fiber optic components within the sealed control cabinet.
  • Wiring Stress Relief: The bending radius of the fiber optic patch cord must be strictly greater than 35 mm after connection to prevent physical damage to the internal fiber core, which could lead to excessive optical attenuation.
  • Grounding Safety Shielding: The outer casing and fixed end plate have a built-in metal grounding busbar, which must be securely connected to the factory's main PE system to eliminate high-frequency noise.
Description
The ABB NDBU-95C 64008366D DDCS Branching Unit is a high-performance communication module designed for ABB drive systems, including ACS800 and DCS800 platforms. It facilitates reliable signal distribution among multiple drive modules with minimal delay, supporting efficient and secure industrial automation networks.

Equipped with 9 fiber optic channels, the NDBU-95C enables high-speed data communication with a data rate of 10 Mbps, ensuring accurate and real-time transfer of operational data between converter modules. This capability is essential for precise control, monitoring, and fault analysis in complex drive systems.

The module is engineered for robust operation in industrial environments, supporting operating temperatures from 0°C to +55°C (32°F to 131°F) and storage temperatures from –40°C to +70°C (–40°F to 158°F). It also tolerates 5–95% relative humidity, non-condensing, ensuring stable performance under diverse environmental conditions.
Alternative Names
NDBU-95C 64008366D NDBU-95C 64OO8366D NDBU95C 64008366D NDBU-85 NDBU-95 NDBU-85C NDCU-21
Technical notes
The ABB NDBU-95C (64008366D) is a branching unit that expands a single master DDCS channel into 9 independent fiber optic slave channels. Operating at data rates compatible with ACS800 series controllers, it optimizes star-topology network distribution for multiple industrial drives.
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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 fiber optic channels does the ABB NDBU-95C 64008366D provide?
ABB NDBU-95C 64008366D provides nine fiber optic channels, allowing multiple communication branches to be organized through one branching unit.
Why must the address of the ABB NDBU-95C 64008366D follow a hierarchy?
The addressing hierarchy defines the arrangement of branching units within the communication system. The branching unit closest to the PC must always have the highest address number.
How can the address of the ABB NDBU-95C 64008366D be configured?
The address is configured through DIP switch S1 located on the branching unit. During system setup, each unit should be assigned an address according to its position in the branching hierarchy.