GE IS230PCAAH1A

Product Overview

The IS230PCAAH1A is a critical PCAA core analog module in the General Electric (GE) Mark VIe control system. As a core component of gas turbine and industrial process control, this module provides a wide range of high-precision analog signal input/output functions. It integrates signal conditioning and processing capabilities for thermocouples, vibration, LVDT, servo drives, 4-20mA current loops, and other signals. Designed for demanding industrial environments requiring high reliability and high availability, it supports single-mode, dual-mode, and triple-mode redundant (TMR) configurations.

Core Functions and Features

Comprehensive Signal Interface Capabilities

Temperature Measurement: 25 thermocouple inputs supporting various types, including E, J, K, T, and S, with open-circuit detection.

Analog Inputs: 10 4-20mA current inputs; 2 configurable as 4-20mA or ±10V voltage inputs.

Analog Output: Two 4-20mA outputs (single-mode), expandable to three redundant (TMR) 4-20mA outputs via a TCAT terminal board.

Position Feedback and Excitation: Six LVDT excitation outputs (7Vrms, 3.2kHz); 12 LVDT feedback inputs (via TCAT).

Servo Drive: Six servo coil drive outputs, each with a full-scale range of 10mA, supporting two-wire or three-wire servo valves.

Vibration Monitoring: Twelve vibration (seismic) signal inputs (via TCAT), providing peak velocity measurement.

Pulse Input: Two TTL pulse inputs (direct PCAA access), two magnetic pulse flow inputs (via TCAT).

High-Reliability Architecture

Redundancy Support: Flexible application in single-mode, dual-mode, and TMR systems ensures high control system availability.

Fault Tolerance: Analog outputs in TMR configurations feature fault masking, minimizing the impact of a single module failure on outputs.

Built-in Diagnostics: The module performs a power-on self-test and continuously monitors power supplies, signal health, reference voltages, ADC/DAC circuits, and other functions during operation. Detailed diagnostic information is provided via status LEDs (PWR, ATT) and ToolboxST.

Protection Functions: The module features soft-start, current limiting, analog output "suicide" relays, and servo output external "suicide" inputs.

Powerful Processing and Control Capabilities

Integrated Processor: The module incorporates a universal Mark VIe I/O processor and dual Ethernet ports, supporting high-speed communication with the controller (IONet).

Digital Servo Regulator: Six independent digital servo regulators are built in, operating at up to 100Hz and supporting a variety of complex closed-loop control algorithms for position valves, speed ratio valves, liquid fuel valves, and other applications.

Technical Specifications

Power Requirements: 28V DC ±5% via the P5 connector.

Communication Interfaces: Two RJ45 Ethernet ports (ENET1, ENET2) support 10/100Mbps auto-sensing and dual-network operation.

Operating Temperature: -30°C to +65°C.

Status Indicators: Green PWR (power), red ATTN (module status), green LINK/yellow TxRx (network activity).

Physical Connections:

Field Wiring: Via front-mounted 120-point Euro-style terminal block (TCAS terminal board).

System Connections: P1/P2 (68-pin) connect to the TCAT terminal board; P4 provides power to the JGPA shield board; P5 provides module main power.

Physical Dimensions: 33.02 cm (H) x 17.8 cm (W) x refer to actual module thickness.

Typical Applications

Heavy-duty gas turbine control systems (e.g., fuel control valves (GCVs), inlet guide vanes (IGVs), speed ratio valves (SRVs)).

Compressor anti-surge control.

Industrial drive and process control systems requiring high-precision analog signal processing and servo control.

Required: Typically integrated with the IS200TCAS terminal board as a minimum replaceable unit.

Optional Expansion: Can be used with the IS200TCAT termination board to expand fan-out signal capabilities (such as redundant LVDTs, vibration, and analog inputs).

System Compatibility: Fully compatible with all Mark VIe controllers, I/O modules, and networks.