GE IS220PAICH1A Single slot analog input terminal board
GE IS220PAICH1A Product Overview
1. Product Description:
- The IS220PAICH1A is a Single-Slot Analog Input Terminal Board designed for GE’s Mark VIe family of distributed turbine and process control systems.
- It functions as a dedicated I/O Pack within a Mark VIe chassis, specifically handling analog input signals.
- Its primary role is to condition, isolate, digitize, and communicate analog signals from field sensors (e.g., thermocouples, RTDs, mV, mA, V) to the Mark VIe control system via the high-speed WEPA (Wired Ethernet for Plant Applications) backplane bus.
- The “H1A” suffix typically indicates this version is certified for use in Hazardous Locations (Class I, Div 2 / Zone 2).
2. Product Parameters & Specifications (Tabulated):
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Feature Category
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Parameter / Specification
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Details / Description
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Model Number
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Part Number
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Series
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Control System Family
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GE Mark VIe Speedtronic™ Turbine Control System
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Form Factor
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Board Type / Slot Usage
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Single Slot, VME-style I/O Pack
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Primary Function
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Role
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Analog Input (AI) Module
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Signal Type
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Supported Inputs
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Thermocouples (TC): J, K, T, E, R, S, B, N, C
RTDs: 2-wire, 3-wire, 4-wire Pt100, Pt200, Pt500, Pt1000, Ni120, Cu10 Voltage: ±50mV, ±100mV, ±1V, ±10V, ±50V, ±100V Current (via Resistor): 0-20mA, 4-20mA (external resistor required) |
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Channels
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Number & Configuration
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16 Single-Ended Analog Input Channels
(Configurable per channel as TC, RTD, mV, V, mA) |
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Resolution
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Analog-to-Digital (A/D)
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Typically 16-bit resolution
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Accuracy
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Input Accuracy
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Varies by signal type & range (e.g., ±0.1% of range for voltage/current, ±1°C for TCs/RTDs common). Refer to official GE documentation.
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Sampling Rate
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Update Rate
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Configurable per channel. Rates typically range from 10ms to 1s per channel, depending on system configuration and load.
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Isolation
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Channel-to-Channel & Channel-to-Backplane
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High Voltage Isolation between channels and between channels and backplane/control system (e.g., 1500V AC RMS). Critical for safety & noise immunity.
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Power Supply
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Requirement
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Powered directly from the Mark VIe chassis backplane (+5V, +3.3V, etc.). No separate external supply needed.
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Communication
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Backplane Interface
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Connects to Terminal Board (e.g., TCM, TMBP) via WEPA backplane within the Mark VIe chassis.
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Environmental
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Operating Temperature
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Standard Industrial Range: -40°C to +70°C (-40°F to +158°F)
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Storage Temperature
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-40°C to +85°C (-40°F to +185°F)
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Relative Humidity
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5% to 95% non-condensing
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Hazardous Area
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Certifications (Key Feature of H1A)
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Certified for Class I, Division 2, Groups A, B, C, D / Zone 2, Group IIC Hazardous Locations (ATEX, IECEx).
Requires installation in a suitable certified enclosure. |
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Mounting
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Location
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Installed in designated slots within a GE Mark VIe Series I/O Chassis (e.g., IC693CHSxxx). Must connect to a compatible Terminal Board in the adjacent slot.
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Configuration
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Software Tool
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Configured (channel type, range, filtering, alarming) using GE’s ToolboxST™ software suite.
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Diagnostics
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Monitoring
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Provides channel-level diagnostics (Open Circuit, Shorted, Out-of-Range, Hardware Fault) to the control system.
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Robustness
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Build
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Industrial-grade components. Conformal coating often applied. Designed for electrical noise immunity in industrial environments.
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3. Series:
- Belongs to the GE Mark VIe Speedtronic™ Turbine Control System family.
- Specifically part of the Mark VIe Series I/O hardware lineup, falling under the PAIC (Protected Analog Input Card) series designation (“PAIC” = Protected Analog Input Card).
- The “H1A” variant indicates hazardous location certification.
4. Key Features:
- Versatile Analog Inputs: Supports a wide range of temperature (TC, RTD) and process (mV, V, mA) signals on any channel.
- High Channel Density: 16 channels per single-slot module.
- High Accuracy & Resolution: 16-bit resolution provides precise measurement.
- High Voltage Isolation: Essential for safety, signal integrity, and noise rejection in industrial environments.
- Hazardous Area Certified (H1A): Enables installation in potentially explosive atmospheres (Class I, Div 2 / Zone 2) when properly installed.
- Built-in Diagnostics: Monitors channel health for open wires, shorts, and other faults.
- WEPA Backplane Integration: Seamless, deterministic communication within the Mark VIe system.
- Channel-by-Channel Configuration: Each channel can be independently configured for signal type and range via ToolboxST.
- Industrial Ruggedness: Designed for reliability in demanding power plant and industrial settings.
5. Function / Role:
- Signal Conditioning: Converts various field sensor signals (low-level mV, TC, RTD, higher V/mA) into conditioned signals suitable for digitization.
- Analog-to-Digital Conversion (ADC): Digitizes the conditioned analog signals with high resolution.
- Isolation: Provides electrical isolation between field wiring and the sensitive control system electronics, and between individual channels.
- Data Acquisition & Transmission: Reads the digitized values and transmits them reliably over the WEPA backplane to the Terminal Board (TCM/TMBP) and ultimately the controller.
- Diagnostic Reporting: Continuously monitors input channels and reports faults (open, shorted, out-of-range).
- Hazardous Area Interface: Safely acquires signals from sensors located in classified hazardous areas.
6. Applications & Use Cases:
- Turbine Temperature Monitoring: Primary application – measuring exhaust gas temperatures (EGT), bearing temperatures, blade path temperatures (using TCs), cooling water/oil temperatures (using RTDs) on gas/steam turbines.
- Process Variable Monitoring: Measuring pressure (via transducers – mV/V/mA), flow (mV/V/mA), level (mV/V/mA), vibration (mV/V) in power plants and industrial processes.
- Hazardous Area Instrumentation: Interfacing with temperature, pressure, and analytical sensors located in Zone 2 / Div 2 areas like near fuel lines, within enclosures near flammable substances.
- Power Generation Balance of Plant (BOP): Monitoring temperatures and pressures in auxiliary systems (lube oil, cooling water, fuel gas, air compressors).
- Industrial Process Control: Acquiring critical analog process variables (temperature, pressure, flow, level, pH, conductivity) in chemical, oil & gas, refining, and pharmaceutical industries.
- Laboratory & Test Stands: High-density, configurable analog data acquisition.
In Summary: The GE IS220PAICH1A is a critical 16-channel, versatile analog input module within the Mark VIe Speedtronic™ control system. Its core strength lies in accurately and safely acquiring a wide variety of analog signals, especially temperature, directly from field sensors, including those located in hazardous areas due to its “H1A” certification. It provides essential signal conditioning, isolation, digitization, and diagnostics, making it a fundamental component for monitoring in turbine control and demanding industrial processes. Configuration is managed exclusively through GE’s ToolboxST software.
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