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DFI21B

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The SEW DFI21B can achieve real-time control of drive devices via the INTERBUS fieldbus system.
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Technical specifications for DFI21B

  • Manufacturer:
    SEW
  • Part Number:
    DFI21B
  • Product Family:
    SEW
  • Type:
    INTERBUS-LWL fieldbus interface module
  • Compatible Devices:
    SEW MOVIDRIVE® series drives
  • Function:
    Adds fiber-optic INTERBUS communication capability to the drive
  • Communication Method:
    INTERBUS fiber-optic
  • Baud Rate:
    Approx. 500 kBaud or 2 MBaud (configurable)
  • Connection:
    Fiber-optic connector (F-SMA)
  • Supported Process Data:
    Up to 6 process data words
  • Weight:
    0.1 kg
  • Estimated shipping dimensions:
    1.9x9.4x13cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Germany
  • 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.
Description
SEW DFI21B is an INTERBUS LWL (Lichtwellenleiter, fiber optic) fieldbus interface option card specifically designed for the MOVIDRIVE® MDX61B series of frequency inverters. The DFI21B serves as an interface for non-proprietary, standardized serial INTERBUS sensor/actuator bus systems utilizing fiber optic cables, establishing communication connections between the frequency inverter and higher-level automation systems.

The DFI21B interface card features process data channels and parameter data channels, enabling simple, user-friendly control and intelligent configuration of the MOVIDRIVE® drive inverter. This DFI21B card is inserted into the XT slot of the MOVIDRIVE® MDX61B basic unit, facilitating real-time control of drive equipment via the INTERBUS fieldbus system.

The INTERBUS functions of the DFI21B encompass device parameterization, process data exchange, and diagnostic capabilities, supporting direct modification of inverter parameters through the bus system. As an LWL (fiber optic) version, the DFI21B utilizes fiber optic cables for data transmission, offering superior electromagnetic interference immunity and extended transmission distances compared to traditional copper cable versions (such as DFI11B). This makes the DFI21B particularly suitable for industrial environments with high requirements for communication reliability.

The DFI21B option card is exclusively compatible with the MOVIDRIVE® MDX61B series frequency inverters and is not supported by MDX60B models. Through the DFI21B interface, users can achieve efficient data exchange between drive equipment and central controllers within distributed automation architectures, satisfying the fieldbus communication demands of modern industrial automation.
Alternative Names
DFI 21B DFP21B DFS11B DFS12B
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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.
What primary functions does the DFI21B support?
The DFI21B supports process data channels and parameter data channels, enabling real-time control, device parameterization, process data exchange, and diagnostic functions. Parameters can be directly modified through the bus system.
What are the advantages of using the fiber optic version (DFI21B) over copper cable versions?
As an LWL version, the DFI21B offers superior electromagnetic interference immunity and supports extended transmission distances, making it ideal for industrial environments with high reliability requirements.
Are there any compatibility limitations for the DFI21B?
Yes, the DFI21B is not compatible with the MOVIDRIVE® MDX60B series. It only functions with MDX61B models.