IS220PTCCH2BB by GE | Thermocouple Input Pack for Mark VIe

GE IS220PTCCH2BB (IS230SNTCH4A) – Thermocouple Input Pack

Product Overview

The GE IS220PTCCH2BB (alternate IS230SNTCH4A) is a Thermocouple Input Pack (PTCC) built for the Mark VIe control system. It acquires accurate temperature signals from multiple thermocouple types and digitizes them for precise control. This module is widely used in gas and steam turbines, where continuous monitoring of exhaust gas, bearings, and combustion temperatures is essential.

The IS220PTCCH2BB integrates with the IS230SNTCH4A terminal board, ensuring reliable signal connections. It delivers 16-bit analog-to-digital conversion for high-resolution data acquisition. Designed with robust galvanic isolation and cold junction compensation, it provides stable and accurate thermal measurement in harsh environments.

Functional Role

This module supports 12 thermocouple inputs, compatible with industry-standard types such as E, J, K, N, R, S, and T. It operates across simplex, dual, or Triple Modular Redundant (TMR) configurations, enabling flexible deployment in mission-critical turbine applications.

The IS220PTCCH2BB communicates via IONet, GE’s high-speed Ethernet protocol, which ensures synchronized data exchange with controllers and HMIs. Additionally, the module complies with SIL 2/3 safety standards, making it suitable for safety-critical turbine and industrial automation systems.

Key Features

• 12-channel thermocouple input with 16-bit resolution.

• Supports thermocouple types E, J, K, N, R, S, and T.

• Integrated cold junction compensation per channel.

• Operates in simplex, dual, and TMR redundancy modes.

• Communicates through IONet for fast and reliable data transfer.

• Compact design with low weight for easy installation.

• Certified for SIL 2/3 safety-critical applications.

Technical Specifications