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FEN-31

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The ABB FEN-31 is an HTL encoder interface providing RS-422 output, two digital inputs, temperature sensor support, and cable fault diagnostics for industrial automation.
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Technical specifications for FEN-31

  • Manufacturer:
    ABB
  • Part Number:
    FEN-31
  • Product Family:
    ABB Drives
  • Product Type:
    68978955
  • Max. power consumption:
    350 mA at 24 V
  • Degree of protection:
    IP20
  • Supply voltages:
    + 15 VDC ± 20% 200 mA (max.); +24 V DC ± 20% 200 mA (max.); 10 - 24 V (external)
  • CHA,CHB,CHZ:
    RS-422/485,500 kHz (max)
  • Maximum cable length:
    100 m
  • Weight:
    0.1 kg
  • Estimated shipping dimensions:
    6.2x10.7x3cm
  • Tariff Code:
    8537101190
  • 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.
Description
The ABB FEN-31 HTL encoder interface is designed for industrial motion control systems, serving as a reliable signal bridge connecting control boards and HTL encoders, and is widely compatible with various HTL encoder models. This compatibility avoids the use of multiple dedicated interfaces in mixed encoder configurations, simplifying system design and reducing component inventory. In addition to encoder signal transmission, this interface supports connection to PTC, Pt1000, or KTY temperature sensors, enabling real-time monitoring of the temperature of critical mechanical components such as motors, preventing overheating-related failures.

A key highlight of the ABB FEN-31 interface is its powerful signal processing capabilities. It integrates a TTL encoder emulation output compliant with the RS-422 standard, converting HTL encoder signals to TTL-compatible signals for use by devices requiring this format, thus expanding its application range in various control systems. Furthermore, it includes two digital inputs, further enhancing its functionality and enabling it to receive discrete control signals from peripheral devices, such as trigger commands or status feedback. In addition, this interface is equipped with cable fault diagnosis capabilities specific to HTL encoder types, helping maintenance personnel quickly locate and resolve cable-related issues, thereby minimizing system downtime.

The ABB FEN-31 HTL encoder interface, with its robust electrical performance and practical design details, is suitable for harsh industrial environments. It supports multiple supply voltage ranges: +15 V DC ±20% (maximum 200 mA), +24 V DC ±20% (maximum 200 mA), and external 10–24 V DC power supplies, adapting to various field power configurations. The CHA, CHB, and CHZ channels have a maximum signal frequency of 500 kHz, ensuring high-speed, accurate signal transmission for high-precision motion control applications. The interface's IP20 protection rating and maximum power consumption of 350 mA at 24 V DC balance durability and energy efficiency, while its maximum cable length support of 100 meters meets the long-distance installation requirements of large industrial facilities.
Alternative Names
FEN31 FEN 31 FEN-31 FEN-3I FEN-31a FEN_31
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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.
Can I connect a temperature sensor to FEN-31?
Yes, a PTC, Pt1000, or KTY temperature sensor can be connected.
What digital outputs does the FEN-31 provide?
It provides an RS-422-standard-compliant TTL encoder emulation output.
How many digital inputs are available?
FEN-31 includes two digital inputs.
What is the maximum cable length for connections?
Up to 100 meters.
What’s your delivery time?
2-3 working days.
Does the FEN-3 come with a warranty?
Yes, the FEN-3 includes a free 1-year Apter Power warranty.
Is FEN-3 100% brand new?
Yes. New and original.

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