Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | IS220PAICH2A |
| GE Part Number | 336A4940CSP11 |
| Manufacturer | GE |
| Product Family | Mark VIe Speedtronic |
| Product Type | Analog I/O Pack (PAIC) |
| Application | Gas turbine, steam turbine, industrial control |
| Analog Inputs | 10 channels |
| Input Channels 1–8 | Configurable ±5 V, ±10 V, 0–5 V, 0–10 V, 4–20 mA |
| Input Channels 9–10 | Configurable ±1 mA, 4–20 mA |
| Analog Outputs | 2 channels |
| Analog Output Range | 0–20 mA |
| Special Output Capability | Analog Output 1 supports 0–200 mA |
| Communication Interface | Dual RJ-45 Ethernet |
| Ethernet Speed | 10/100 Mbps |
| Terminal Interface | DC-37 pin connector |
| Power Input | 28 VDC |
| Power Consumption | 5.3 W typical / 6.2 W maximum |
| Processor Board | BPPx processor board |
| Mounting | Mark VIe I/O terminal board assembly |
| Diagnostics | LED status indicators and local service interface |
| Operating Environment | Industrial turbine control cabinet |
Product Introduction
GE IS220PAICH2A 336A4940CSP11 Product Introduction
GE IS220PAICH2A 336A4940CSP11 is a Mark VIe analog I/O pack designed for GE Speedtronic turbine control systems. The module provides the electrical interface between field analog devices and the Mark VIe control architecture, allowing controllers to monitor process variables and issue analog commands to external equipment.
The GE IS220PAICH2A 336A4940CSP11 combines a standard Mark VIe processor board with dedicated analog acquisition hardware. It receives field signals from sensors such as pressure transmitters, temperature transmitters, flow instruments, and position feedback devices, then transfers processed data through the I/O Ethernet network to the controller.
The GE IS220PAICH2A 336A4940CSP11 is commonly installed in turbine control applications where reliable analog measurement and output control are required. The module works as part of a complete Mark VIe I/O chain, including terminal boards, Ethernet networks, controller hardware, and ToolboxST configuration. Replacement requires checking the complete hardware configuration rather than matching only the module label.
IS220PAICH2A 336A4940CSP11
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A turbine control system reports unstable pressure, temperature, or valve position feedback. The field transmitter checks normal, but the controller receives incorrect analog values.
Analog I/O packs are often blamed first because they sit between field instruments and control processors. However, signal faults can also originate from terminal boards, wiring, grounding, calibration settings, or configuration errors.
Typical Applications
Gas Turbine Control
Used for monitoring:
- Compressor discharge pressure
- Exhaust temperature signals
- Fuel system instrumentation
- Valve position feedback
Steam Turbine Systems
Applied for:
- Steam pressure measurement
- Control valve feedback
- Auxiliary system monitoring
Power Generation Plants
Used in:
- Combined cycle plants
- Generator auxiliary systems
- Turbine balance-of-plant controls
Industrial Drives and Rotating Equipment
Applied for:
- Process transmitters
- Mechanical equipment monitoring
- Analog control outputs
Technical Pitfalls to Avoid
1. Verify Terminal Board Compatibility
The IS220PAICH2A connects directly to Mark VIe analog terminal boards through a DC-37 connector. Confirm the terminal board model before replacement.
2. Check Analog Signal Configuration
Incorrect channel configuration can create false readings.
Verify:
- Voltage vs current input selection
- Scaling parameters
- Engineering units
- Alarm limits
3. Inspect Field Wiring
Common causes of analog problems include:
- Damaged shield cables
- Incorrect grounding
- Loose terminal connections
- Transmitter loop power issues
4. Confirm Ethernet Network Setup
The PAIC communicates through dual Ethernet ports. Network addressing, redundancy configuration, and controller assignment must match the existing Mark VIe system.
Related Products
- GE IS220PAICH1A 336A4940CSP3
Related Mark VIe analog I/O pack with similar analog acquisition functions but different hardware configuration. - GE IS220PDIAH1A 336A4940CSP1
Mark VIe discrete input module used for switch and contact signal acquisition. - GE IS220PDOAH1A 336A4940CSP2
Mark VIe discrete output module used for relay and digital control functions. - GE IS220PRTDH1A
Mark VIe RTD input module for temperature measurement applications. - GE IS220PSVOH1A
Mark VIe servo valve control module used for turbine hydraulic valve control. - GE IS220PTURH1A
Mark VIe turbine-specific I/O module used for specialized turbine signals. - GE IS420UCSCH2A
Mark VIeS controller module used in safety-related turbine control applications. - GE Mark VIe Terminal Boards
Required interface assemblies providing field wiring connections for Mark VIe I/O packs.
