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GE IS220PTCCH1B

Product Name:​ Mark VIe PTCC Thermocouple I/O Pack
Introduction:​ Distributed I/O processor that reads 12 TC channels, performs cold-junction compensation and pushes data to Mark VIe controller over IONet.
Technical Specifications:
  • Channels:​ 12 TC + 1 CJ reference
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Detailed content

  • Types:​ E, J, K, T, S, R, B, N (grounded/ungrounded)
  • mV Input:​ −8 to +45 mV
  • Resolution:​ 16-bit A/D, 100 Hz scan
  • Supply:​ 28 V DC, 0.16 A
  • Network:​ Dual 100Base-TX Ethernet (IONet R/S redundancy)
  • Redundancy:​ Simplex / Duplex / TMR (3 packs on 1 TB)
  • Cable:​ ≤ 300 m, ≤ 450 Ω loop resistance
  • Temp:​ −30 to +65 °C
  • Pairing:​ TBTCH1B/C terminal board (holds CJ sensor)
Features:​ Open-TC detection, out-of-range hardware alarm, per-channel LED, TMR vote-ready.
Working Principle:​ TC mV → instrumentation amp → 16-bit ADC → cold-junction correction → Ethernet frame to controller.
Application Scenarios:​ Gas turbine exhaust spread (TTXM), bearing metal temp, generator stator RTD cross-check, HRSG stack profile.
Installation & Notes:​ Use only TC-extension wire (no copper); shield drained at terminal board single end; keep away from VFD power; TMR needs 3 identical packs.

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