ABB TK850

ABB TK850

Product Brief:​ “TK850” in ABB spare lists usually denotes a simplex or duplex fiber optic patch cord​ used in:

  • DDCS bus (ABB drive multi-drive):​ NDCU-21C (RDCU) TX → NDBU-95 IN; NDBU-95 OUT → slave drive AINT DDCS RX — typically 820 nm ST-ST multimode fiber (62.5/125 µm), 1 m / 3 m / 5 m lengths
  • INFI 92 Control Way (C.W.) fiber rings:​ INNIS21 ↔ INNIS21 or INNIS21 ↔ INBIM21 (I/O node) — if fiber version of C.W. (vs coax)
  • Less commonly: HN800 fiber patch (multimode 1300 nm ST-ST) — though HN800 media kits often have their own part number; TK850 may be used generically for any ABB-standard ST-ST multimode fiber patch

    The exact length & connector type are encoded in the suffix (if present — your list shows “TK850” bare, implying standard 1 m ST-ST 820 nm multimode DDCS fiber or that suffix is in BOM elsewhere).

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Category: SKU: ABB TK850

Description

ABB TK850

  • Technical Specifications (typical DDCS fiber patch — TK850 family):
    • Fiber Type: Multimode 62.5/125 µm (OM1) or 50/125 µm (OM2) — per ABB DDCS spec = 62.5/125 µm typical
    • Wavelength: 820 nm (DDCS) or 1300 nm (HN800/newer) — verify per application
    • Connectors: ST (bayonet twist) both ends — DDCS uses simplex ST; some HN800 use duplex LC or ST — TK850 usually ST-ST simplex for DDCS
    • Length: 1 m / 3 m / 5 m / 10 m (common; max per DDCS node ≤50 m; HN800 ≤2 km multimode)
    • Jacket: Orange (820 nm) or Aqua (1300 nm) PVC/LSZH
    • Attenuation: ≤3 dB/km @ 820 nm; ≤1 dB/km @1300 nm
    • Operating Temp.: –20 °C to +70 °C (cable); –40 °C to +85 °C (connector boot)
  • Functional Features / Application / Material / Structure / Working Principle / Installation / Precautions:
    • Used to link RDCU/NAMC DDCS TX → NDBU-95 IN; NDBU-95 OUT → next NDBU-95 or slave drive DDCS RX
    • For INFI 92 fiber C.W.: INNIS21 Port A/B → next node’s IN port — must form ring (A-ring & B-ring) — both rings terminated at ends with NTR001 terminator plug (NOT fiber loopback)
    • Installation:
      • Clean fiber end-faces with lint-free wipe + isopropyl alcohol before mating
      • Insert into ST port — twist lock; ensure clicked
      • Verify Link LED illuminates on NDBU-95 / INNIS21 / drive DDCS RX
    • Precautions:
      • Do NOT look into live fiber — although low power (≤1 mW typical) IR invisible — good practice to avoid direct viewing
      • Minimum bend radius ≥30 mm (≈1″) — kinking raises attenuation / breaks fiber
      • For DDCS: total fiber length per segment ≤50 m (check DDCS spec — some versions allow 300 m with 1300 nm); exceeding causes link loss
      • For C.W. ring: ensure both A-ring & B-ring have terminators at their respective ends — missing terminator = CRC errors / intermittent node drop
      • Store spares with dust caps on both ends; reclean before use

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