Danfoss VLT® EtherNet/IP MCA 121 Operating instructions

Danfoss VLT® EtherNet/IP MCA 121 is an EtherNet/IP option card designed for communication with any system complying with the CIP EtherNet/IP standard. It features a built-in Ethernet switch with two RJ-45 connectors, allowing for line topology connections in addition to the typical star topology. The card supports both ODVA and Danfoss FC control profiles, enabling you to control and monitor your frequency converter directly from your PLC or other control system.

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Danfoss VLT® EtherNet/IP MCA 121 Operating Instructions | Manualzz

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Key features

  • Supports EtherNet/IP protocol
  • Built-in Ethernet switch
  • Line topology support
  • ODVA and Danfoss FC control profiles
  • Cyclic I/O and Change-of-State connections
  • Explicit messaging support
  • Class 1 and 3 connections
  • Multicast support

Frequently asked questions

The MCA 121 option card supports both Class 1 and Class 3 EtherNet/IP connections. Class 1 connections are used for cyclic I/O and Change-of-State connections, while Class 3 connections are used for explicit messaging.

The MCA 121 option card supports both ODVA and Danfoss FC control profiles. This allows for compatibility with a wide range of control systems.

Yes, the MCA 121 option card features a built-in Ethernet switch that enables line topology connections. This allows for multiple frequency converters to be connected in a series.
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