AI950N ABB 3KDE175523L9500 Temperature Input Module | 4CH RTD/TC S900 I/O

• ABB AI950N (3KDE175523L9500) – 4‑channel isolated analog input for RTD, TC, mV.
• Part of S900 I/O system; designed for safe area installation (non‑hazardous).
• Supports Pt100, Pt1000, Ni100 in 2/3/4‑wire, plus thermocouples B,E,J,K,L,N,R,S,T,U and millivolt.
• Channel‑to‑channel galvanic isolation, bus isolation, and input/power separation.
• Hot swap & hot configuration in run – no process interruption.
• Redundant power and communication options (system level).
• Extended diagnostics with FDT/DTM, wire break / short detection.

⚙️ technical specifications (AI950N) – tree structure

• ABB AI950N – 3KDE175523L9500
  • type – analog input module, 4 channels, isolated
  • measurement ranges
    • RTD (Ω)
      • Pt100, Pt1000, Ni100
      • 0…3 kΩ (2/3/4‑wire)
    • thermocouple (mV)
      • B, E, J, K, L, N, R, S, T, U
      • ±100 mV, ±1000 mV direct
  • accuracy / linearity – ±0.1% F.S. typical | resolution 16 bit
  • cold junction
    • internal (on‑board sensor)
    • external (Pt100)
  • frequency response – 10 Hz (programmable filter)
  • environmental tolerance
    • temperature: -20°C … +60°C
    • humidity: ≤93% @40°C, non‑condensing
    • corrosive atmosphere: ISA‑S71.04 G3 coated
  • isolation & immunity
    • channel/input/bus: 500 V AC/DC
    • ESD / surge protection (IEC)
  • diagnostics
    • wire break detection
    • sensor short detection
    • under/over range
    • LED status per channel
  • physical
    • H×W×D: 104×20×104 mm | weight 0.13 kg

🔧 installation guide – tree

• mounting
  • snap‑on DIN rail (S900 backplane)
  • safe area / Zone 2 variant available
• wiring
  • spring terminals, 0.2 … 2.5 mm² (AWG 24…14)
  • direct field wiring – no marshalling
  • shield connection recommended for TC
• hot‑swap
  • integrated disconnection lever
  • replace during operation – no power down

🔍 diagnostics & maintenance ease – tree

• per‑channel diagnostics
  • short & break detection
  • reported via PROFIBUS DP + LED
• advanced tools
  • FDT/DTM frame – parametric linearisation
  • auto‑diagnostic log (overrange, cold‑junction failure)
• maintenance features
  • LED per channel (power, comm, fault)
  • no primary voltage interruption for replacement

✅ compatibility & certifications – tree

• communication
  • PROFIBUS DP‑V1, up to 12 Mbit/s
  • works with any DP master (Siemens, ABB, etc.)
• environmental certifications
  • G3 coating (ISA‑S71.04)
  • CE, RoHS (2011/65/EU), WEEE
• safety
  • intrinsic safety: No (module itself non‑Ex)
  • can be used behind barriers

📦 package / warranty / fast delivery – tree

• package includes
  • ABB AI950N module (3KDE175523L9500)
  • connector set, quick start guide
• warranty
  • 12‑month against defects
  • original ABB sealed
• shipping
  • FedEx, UPS, DHL – tracked & insured
  • express 2‑5 days worldwide

🏭 typical applications – tree

• process industries
  • chemical reactors, oil & gas, power generation
  • HVAC, furnace control
• machinery
  • plastic/rubber, multi‑sensor monitoring
• system integration
  • S900 cabinet retrofit, eliminates marshalling
  • high common‑mode environments

❓ FAQ – expert insights (tree)

• Q: Can AI950N read both Pt100 and thermocouple on same module?
• A: Yes, each of the 4 channels is independently configurable for RTD, TC, or mV. Mix types freely.
• Q: My plant has corrosive gases. Is this module protected?
• A: Absolutely. All components meet ISA‑S71.04 G3 severity level – standard coating.
• Q: How do I choose between internal and external cold junction?
• A: Use internal CJC for simplicity (0.5°C accuracy). For high precision with many thermocouples, connect external Pt100 CJC sensor.
• Q: Does it support HART? The description says “HART Yes”?
• A: The AI950N itself is HART‑capable (analog + HART pass‑through) when used with appropriate coupler – but note it’s primarily a temperature input. For pure HART instruments, use AI930 series.
• Q: Buying guide – which variant do I need: AI950N vs AI950?
• A: AI950N is the standard safe‑area version (G3 coated). AI950 (without N) is for Zone 2 installation. Choose based on your hazardous area classification. Most projects use AI950N.
• Q: Can I replace the module while the backplane is live?
• A: Yes, hot‑swap is supported thanks to mechanical disconnection levers. No arc, no power interruption.
• Q: What does the suffix “N” stand for?
• A: “N” indicates safe area (non‑hazardous) and G3 coated. No “N” = Zone 2 approval.

📬 contact & inquiries

• 📧 sales@powergearx.com
• 📞 +86 180 3000 5825 (WhatsApp)
• For volume discounts, technical support, or expedited shipping – reach out directly.