IS220PTCCH2B GE

Model: IS220PTCCH2B
Manufacturer: GE
Core Function: Acquires and conditions signals from up to 12 general-purpose thermocouple inputs with integrated cold junction compensation, providing linearized digital temperature data for process and equipment monitoring in industrial control applications.
System Compatibility: Compatible with GE Mark VIe and Mark VIeS control systems, including Speedtronic turbine platforms.
Supply Status: Available as new surplus, refurbished, or repair/exchange; updated technology variant for extended lifecycle support.
Warranty Standard: 12-month functional warranty, fully tested.

Key Technical Specifications

Product Model: IS220PTCCH2B
Manufacturer: GE
System Platform: Mark VIe
Power Supply Voltage: 28 V DC nominal (from terminal board), operational range 24-32 V DC to support stable analog circuitry.
Power Consumption: Approximately 5-10 W, optimized for minimal heat generation in populated I/O racks.
Communication Interfaces: Dual 100 Mbps Ethernet ports via IONet, enabling redundant, high-speed data transfer to controllers.
Input Channels: 12 independent thermocouple inputs for general industrial applications.
Supported Thermocouple Types: E, J, K, S, T, B, N, R, providing broad compatibility for diverse temperature ranges.
Input Voltage Range: -8 mV to +45 mV typical, covering standard thermocouple outputs with extended type support.
Resolution: 16-bit analog-to-digital conversion, delivering fine granularity for accurate temperature discrimination.
Accuracy: ±0.5°F typical (post-linearization and compensation), sufficient for general process and non-critical turbine monitoring.
Cold Junction Compensation: Built-in high-stability sensor, reducing ambient-induced errors at the terminal board interface.
Operating Temperature Range: -30°C to +65°C, robust for industrial settings with temperature fluctuations.
Humidity Tolerance: 5% to 95% non-condensing, maintaining signal reliability in varying environmental conditions.
Dimensions: Standard Mark VIe I/O pack footprint approximately 8.26 cm wide x 4.19 cm high, for mounting on compatible terminal boards.
Weight: Approximately 0.4-0.8 kg, supporting efficient field handling and replacement.
Mean Time Between Failures (MTBF): >150,000 hours (typical Mark VIe analog I/O series), promoting long-term system dependability.
Certification Standards: CE compliant, UL 508 listed for industrial controls, RoHS environmental compliance.

Technical Architecture & Functional Positioning

The IS220PTCCH2B functions as a distributed analog input pack within the Mark VIe framework, interfacing directly with thermocouple terminal boards (such as STTC or TBTC variants) at the field layer. It performs local millivolt-to-digital conversion, type-specific linearization, cold junction compensation, and diagnostic processing before transmitting engineering-unit temperature values over redundant IONet to the controller. This architecture minimizes analog signal vulnerability over distance and supports localized fault detection, ideal for applications requiring reliable but non-combustion-optimized temperature data.

Incorporating an internal BPPx processor board paired with a dedicated thermocouple acquisition circuit, the pack handles extended thermocouple type support (including B, N, R) for broader industrial use beyond combustion-specific needs. Precision amplifiers, programmable gain stages, and onboard diagnostics enable open-sensor detection, channel isolation, and noise rejection in electrically noisy turbine or process environments. These elements resolve typical issues such as drift from junction temperature changes, EMI-induced errors near generators, and the demand for consistent readings in supervisory or auxiliary monitoring loops.

In simplex, duplex, or TMR configurations, the module ensures synchronized data sampling and seamless redundancy handling, facilitating predictive maintenance via detailed channel health reporting and aiding compliance with operational safety standards.