FMBT-21 ABB Modbus/TCP Adapter Module – FMBT-21 Plug-In Drive Ethernet Card

FMBT-21 ABB Modbus/TCP Adapter Module – Plug-In Drive Communication

Product Overview

• FMBT-21 is a plug-in communication module from ABB.
• It lets ABB drives join Modbus TCP networks.
• Setup is simple and cost is low.
• It fits basic monitoring and control tasks.
• Ethernet integration comes in one small module.

Communication Path

• Protocol
  • Modbus/TCP
  • Two network connections
• Transfer rate
  • 10 Mbps or 100 Mbps
  • Half-duplex or full-duplex
• Ethernet link
  • Standard: IEEE 802.3 and IEEE 802.3u
  • Type: 10BASE-TX / 100Base-TX
  • Auto-negotiation and Auto-MDIX (Auto-crossover)
• Cabling
  • Wiring: CAT5e/6 S/FTP, S/STP, SF/FTP
  • Connector: RJ-45
  • Termination: Internal
  • Max segment: 100 m (328 ft)
• Topology
  • Bus or star
  • Max 50 nodes per chain

Hardware Details

• Ports
  • 20-pin connector to the drive
  • RJ-45 (X1) to Ethernet
  • RJ-45 (X2) for chaining a second module
• Power
  • +3.3 V ±5%, max 400 mA
  • Power comes from the drive
• Indicators
  • Three bicolor LEDs
  • Labels: HOST, MODULE, NETWORK/NET

Environment and Build

• Degree of protection: IP20
• Ambient conditions
  • Use the limits stated in the drive manual
• EMC
  • Meets EN 61800-3:2004
• Board
  • Printed circuit board with conformal coating
• Package
  • Cardboard box
  • Antistatic air bubble sheet (PE)

Expert Review

• The FMBT-21 is a neat fit for ABB drives.
• The plug-in design saves wiring time.
• Two RJ-45 ports help chain modules.
• Auto-MDIX removes cable guesswork.
• Three LEDs give quick status checks.
• Conformal coating adds board protection.
• It is a smart pick for simple Ethernet control.

Manager’s Insight

• This module is easy to stock and sell.
• Most drive users want fast Modbus TCP setup.
• The dual RJ-45 ports cut extra switch costs.
• IP20 suits cabinet use.
• Keep spare units for urgent repairs.
• Pair it with CAT5e/6 shielded cable for best results.

Suitable Devices and Applications

• ABB drives with a plug-in module slot
• Pump and fan control panels
• Conveyor and material handling lines
• Building automation cabinets
• Water treatment systems
• Factory monitoring networks
• Remote drive status checks

FAQ

• Q: How many adapters can I chain?
• A: A chain should hold no more than 50 nodes.
• Q: Which cable should I buy?
• A: Use shielded CAT5e/6 S/FTP or S/STP cable.
• Q: Does the module need a separate power supply?
• A: No. The drive supplies +3.3 V power.
• Q: What do the LEDs show?
• A: They show host, module, and network status.
• Q: How long can one cable segment be?
• A: Keep each segment under 100 m.
• Q: What warranty comes with the FMBT-21?
• A: We give a 12-month warranty.
• Q: How fast do you dispatch orders?
• A: We ship within 12–24 hours.
• Q: Which couriers do you use?
• A: We ship by FedEx, UPS, and DHL.

Buying Guide

• Check that your ABB drive has a module slot.
• Confirm your network uses Modbus TCP.
• Plan the chain before you buy.
• Order shielded cable with the module.
• Keep one spare unit on hand.
• Choose express courier for urgent jobs.

Inquiries: sales@powergearx.com or +86 18030005825.

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