Description
Product Description
GE IS220PDIAH1A 336A4940CSP1 is a discrete contact input (PDIA) I/O pack module designed for GE Mark VIe Speedtronic distributed turbine control systems, acting as a critical interface between field contact devices (switches, relays, limit sensors) and the Mark VIe controller via dual Ethernet IONet ports. GE IS220PDIAH1A 336A4940CSP1 integrates a shared Mark VIe I/O processor board and a discrete input-specific acquisition board, supporting up to 24 isolated contact inputs with voltage options (24 VDC/48 VDC/125 VDC) via compatible terminal boards (TBCIH1/H2/H3, TICI, STCI). GE IS220PDIAH1A 336A4940CSP1 features dual RJ45 Ethernet ports for redundant IONet communication and a DC-37 pin connector for direct terminal board integration, with LED indicators for power, Ethernet link/activity, and diagnostics. GE IS220PDIAH1A 336A4940CSP1 offers galvanic isolation and voltage sensing for reliable signal acquisition in harsh industrial environments with electrical noise and vibration. GE IS220PDIAH1A 336A4940CSP1 is a genuine GE Speedtronic component, ensuring seamless compatibility with Mark VIe TMR/simplex systems and supporting QNX Neutrino RTOS for real-time control. GE IS220PDIAH1A 336A4940CSP1 simplifies installation with plug-in connectors and provides local infrared diagnostics for quick troubleshooting.
Technical Parameters
- Product Type: Discrete Contact Input (PDIA) I/O Pack (Mark VIe Series)
- Manufacturer: GE (General Electric) Speedtronic
- Model Number: GE IS220PDIAH1A 336A4940CSP1
- Input Capacity: 24 isolated contact inputs (configurable via terminal board)
- Voltage Compatibility: 24 VDC, 48 VDC, 125 VDC (via TBCIH1/H2/H3/TICI/STCI)
- Communication Interfaces: 2 RJ45 Ethernet (IONet, 10/100 Mbps auto-negotiation), infrared (diagnostics)
- Signal Connector: DC-37 pin (terminal board interface)
- Power Requirements: 24 VDC, 3-pin power input
- Operating Temperature: -40°C to +70°C (-40°F to 158°F)
- Isolation: Galvanic isolation between field inputs and control side
- Dimensions: 5.1 cm × 8.3 cm × 12.7 cm (2.0 in × 3.3 in × 5.0 in)
- Weight: 0.5 kg (1.0 lb)
Advantages and Features
- High Input Density: GE IS220PDIAH1A 336A4940CSP1 supports 24 discrete inputs on a single pack, reducing I/O rack space and wiring complexity.
- Redundant Communication: Dual Ethernet ports ensure IONet reliability for critical turbine control applications.
- Flexible Voltage Support: Compatible with multiple terminal boards for 24/48/125 VDC inputs, adapting to diverse field device requirements.
- Robust Isolation: Galvanic isolation protects the controller from field-side noise and transients, enhancing system stability.
- Real-Time Performance: QNX Neutrino RTOS enables low-latency signal processing and control loop execution.
- Easy Diagnostics: LED indicators and infrared port allow quick fault detection without system shutdown.
Application Fields and Cases
GE IS220PDIAH1A 336A4940CSP1 is widely used in gas/steam turbine control for power generation, oil & gas, and heavy industry:
- Thermal Power Plants: Monitors safety interlocks, valve position switches, and bearing temperature alarms in steam turbine systems.
- Combined Cycle Power Plants: Interfaces with gas turbine fuel system relays, flame detectors, and lube oil pressure switches for combustion safety.
- Industrial Turbine Drives: Controls compressor anti-surge valves, gearbox limit switches, and emergency shutdown (ESD) contacts in pipeline/chemical applications.
Case Example: A Middle Eastern gas power plant deployed GE IS220PDIAH1A 336A4940CSP1 to replace aging discrete I/O modules in its Mark VIe TMR system. GE IS220PDIAH1A 336A4940CSP1 integrated 24 contact inputs per pack (8 packs total) for ESD and safety interlock monitoring, reducing false alarms by 35% and cutting troubleshooting time by 50% via LED/infrared diagnostics. Post-installation, the plant achieved 99.98% I/O availability and extended maintenance intervals by 18 months.
Comparison with Competing Products
| Parameter | GE IS220PDIAH1A 336A4940CSP1 | Emerson Ovation DIO Module | Siemens T3000 Discrete Input Card |
|---|---|---|---|
| Input Channels | 24 isolated contacts | 16/32 channels | 32 channels |
| Voltage Range | 24/48/125 VDC (configurable) | 24 VDC fixed | 24/48 VDC |
| Redundant Ethernet | Dual RJ45 (IONet) | Optional | Yes (Profinet) |
| RTOS Support | QNX Neutrino | VxWorks | Linux |
| Terminal Board Compatibility | 5 types (TBCIH/TICI/STCI) | Limited to 2 types | 3 types |
| Mark VIe Compatibility | Native | Requires gateway | Requires protocol converter |
Selection Recommendations and Precautions
Selection Recommendations
- Select GE IS220PDIAH1A 336A4940CSP1 for Mark VIe discrete input expansion, matching terminal boards (TBCIH1/H2/H3 for non-isolated, TICI for isolated voltage sensing) to field device voltage.
- Pair GE IS220PDIAH1A 336A4940CSP1 with dual Ethernet cables for IONet redundancy in TMR systems.
- Use GE’s Mark VIe ToolboxST software for configuration, firmware updates, and diagnostics.
- For 125 VDC inputs, choose TBCIH3 terminal boards; for isolated voltage sensing, select TICI boards.
Precautions
- Operate GE IS220PDIAH1A 336A4940CSP1 within -40°C to +70°C; avoid condensation and extreme vibration.
- Ensure proper DC-37 pin seating between the pack and terminal board to prevent signal loss.
- Use shielded Ethernet cables for IONet connections to minimize electrical noise interference.
- Follow ESD-safe handling procedures during installation to protect the processor/acquisition boards.
- Replace terminal boards if voltage mismatches or physical damage occur to maintain input accuracy.
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