Description

IS220PTCCH1B Thermocouple Input I/O Pack

Technical Specifications

• Product Model: IS220PTCCH1B
• Brand: GE Vernova
• Warranty: One Year
• Input Voltage: 22.5‑28.6 VDC IONet pack supply
• Operating Temperature: ‑40 °C ~ +70 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Thermocouple‑scan cycle ≤2 ms
• Protection Class: IP20 field‑mount I/O pack
• Accuracy Class: ±0.2 % full‑scale thermocouple‑measurement grade
• Output Frequency: Not applicable
• Rated Current: 310 mA typical power consumption
• Channels: Multi‑channel thermocouple‑input; supports J, K, T, E, R, S, B thermocouple types
• Cold‑Junction Compensation: On‑board automatic cold‑junction compensation
• Communication: Dual RJ45 IONet SRTP redundant Ethernet ports
• System Compatibility: GE Mark VIe turbine‑control system; mates with PTCCH‑series terminal‑base
• Isolation: 1500 V AC channel‑to‑backplane galvanic isolation
• Diagnostics: Open‑thermocouple detection, module‑health and link‑status LED indicators
• Certifications: CE, UL, ATEX / IECEx Zone 2 approval
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.35 kg
• Dimensions: 122 × 82 × 60 mm
• 

Product Overview

IS220PTCCH1B is a thermocouple‑input I/O pack for GE Mark VIe distributed‑I/O system. It acquires millivolt‑level thermocouple temperature‑signals from turbine‑hot‑gas‑path, bearing‑surface and plant‑process temperature‑measurement points. Integrated automatic cold‑junction compensation eliminates external compensation‑circuit requirement. Dual‑port redundant IONet supports fault‑tolerant network topology for power‑generation safety‑critical control racks. It converts raw thermocouple millivolt signals into engineering‑unit temperature values for Mark VIe controller logic, HMI trend‑display and over‑temperature‑protection interlock functions. Discontinued automation spare component available as refurbished and surplus tested hardware for power‑plant‑control‑system maintenance‑workshops.

Application Notes

‑ Install on matching PTCCH‑series terminal‑base assembly. ‑ Use thermocouple‑grade extension‑wiring for field‑sensor connections; avoid ordinary copper‑wire. ‑ Select thermocouple sensor‑type for each channel in ToolboxST software. ‑ Typical deployment: power‑plant Mark VIe thermocouple‑I/O‑pack spare‑part stocking.