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      FEN-31 68978840

      HTL encoder interface for compatible ABB drive systems
      In Stock
      Ships by Friday, August 21
      Fast Shipping Available

      Product Describe：

      ABB FEN-31 is an HTL encoder interface installed in a compatible ABB drive option slot between the drive control board and an HTL encoder.

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      Technical specifications Information Alternative names Technical notes FAQ

      Technical specifications for FEN-31 68978840

      Technical specifications for FEN-31 68978840

      • Manufacturer:
        ABB
      • Product Category:
        General Automation
      • Spare Part Number:
        FEN-31
      • Estimated shipping dimensions:
        10.7x6.2x4cm
      • Weight:
        0.1 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        Sweden
      • Product type:
        HTL encoder interface
      • Current ABB loose-item code:
        68978955
      • Requested identifier:
        68978840 — not verified in the cited direct ABB sources
      • Catalog option code:
        +L502
      • Encoder input channels:
        A, B and Z; maximum 300 kHz
      • Encoder supply:
        +15 V DC ±20% or +24 V DC ±20%, 200 mA; external 10 to 24 V DC permitted
      • Encoder-emulation output:
        Isolated A, B and Z over RS-422/485; maximum 500 kHz
      • Digital latch inputs:
        2 × 24 V, short-circuit proof
      • Supported sensor connection:
        PTC, Pt1000 or KTY-84 subject to ABB insulation requirements
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      ABB FEN-31 is an HTL encoder interface installed between a compatible ABB drive control board and an HTL encoder.
      • A, B and Z HTL encoder inputs, up to 300 kHz
      • Encoder supply: +15 V DC or +24 V DC, plus or minus 20%, 200 mA
      • Isolated A, B and Z encoder-emulation output over RS-422/485, up to 500 kHz
      • Two short-circuit-proof 24 V digital latch inputs

      It receives speed, direction, position and reference-mark pulses, supplies this feedback to the drive, and can reproduce isolated encoder signals for compatible downstream equipment in closed-loop drive-controlled machinery.

      Important Notice: ABB directly verifies current loose-item code 68978955; requested code 68978840 must be confirmed from the physical ABB nameplate or a direct ABB spare-parts record before it is treated as an exact legacy code.

      Apter Power FEN-31 68978840 Manuals and Guides

      Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.

      Closed-loop speed feedback
      Supplies A and B pulse feedback to a compatible ABB drive for closed-loop speed control.
      Position and reference feedback
      Uses A, B and Z channels for position, direction and reference-mark information.
      Encoder-based process control
      Supports drive-controlled machinery whose configured control functions depend on HTL encoder feedback.
      Isolated signal replication
      Provides an isolated A, B and Z TTL encoder-emulation output to compatible downstream equipment.
      Follow the applicable ABB drive and FEN-31 instructions, and confirm host-drive compatibility before installation or commissioning.
      1
      Installation and maintenance are for qualified electricians only.
      2
      Isolate every power source, prevent reconnection, wait five minutes and verify that the drive is discharged before work.
      3
      Earth the drive and module correctly because the grounding screw is important for EMC performance.
      4
      Use shielded instrumentation cable, preferably twisted pairs, and separate encoder wiring from motor and power cables.
      5
      Connect a supported motor-temperature sensor only when it has double or reinforced insulation from live motor parts.

      Alternative Names

      Alternative Names

      FEN-31 ABB FEN-31 68978955 68978840 +L502

      Technical notes

      Technical notes

      Do not claim that 68978840 is the current ABB order code; the directly verified current code is 68978955. Confirm compatibility in the exact host drive's ordering information or hardware manual before installation. Maximum cable length depends on the encoder output circuit: 300 m differential push-pull, 200 m single-ended push-pull, and 100 m open-collector or open-emitter. The documented speed range is -32768 to +32767 rpm with 0.04 rpm resolution; position resolution is 24-bit. Installation and service are restricted to qualified electricians. Isolate all power sources, wait the required five minutes, verify discharge and follow ABB grounding, shielding and temperature-sensor isolation instructions. No single country of origin, product weight or customs tariff code is stated in the cited direct ABB sources.

      FAQS

      • What is ABB FEN-31?
        It is an HTL encoder interface that connects a compatible ABB drive control board to an HTL encoder for speed and position feedback.
      • Is 68978840 the current ABB order code for FEN-31?
        No direct ABB source reviewed verifies 68978840 as the current code. ABB's current product page and ACS880 catalogue identify 68978955 as the loose-item code, so 68978840 requires nameplate or direct ABB spare-parts confirmation.
      • Which encoder output circuits does FEN-31 support?
        ABB lists differential push-pull, single-ended push-pull, open-collector and open-emitter HTL encoders.
      • What is the maximum encoder input frequency?
        The maximum A/B/Z encoder input frequency is 300 kHz.
      • How can the encoder be powered?
        The module offers +15 V DC or +24 V DC internal supplies rated 200 mA, and ABB also permits an external 10 to 24 V DC encoder supply.
      • What does the encoder-emulation output provide?
        It provides galvanically isolated A/B/Z TTL encoder-emulation signals over RS-422/485, up to 500 kHz, with 1 to 65535 programmable pulses per revolution.
      • Does FEN-31 have digital inputs?
        Yes. It has two short-circuit-proof 24 V digital latch inputs; ABB specifies below 5 V as logic 0 and above 15 V as logic 1.
      • Can a motor-temperature sensor be connected?
        A supported PTC, Pt1000 or KTY-84 sensor can be connected only under ABB's stated insulation conditions. The sensor must have double or reinforced insulation because the module does not provide safe isolation from the drive.
      • What cable routing does ABB require?
        ABB instructs users to use shielded instrumentation cable, preferably twisted pairs, and to keep encoder cables separate from motor and power cables.那个
      Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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