Description
Product Core Brief
- Model: IS220PDIOH1B
- Part Number: 336A5026ADP6
- Brand: General Electric (GE / GE Vernova)
- Series: Mark VIe Control System
- Product Type: Discrete I/O Pack (PDIO)
- Core Function: Provides 12 discrete inputs and 6 discrete outputs for the Mark VIe control system. It acts as the interface between the control system and field devices, handling signal conditioning and status monitoring.
- Supply Status: ⚠️ Obsolete by OEM; professional industrial surplus available.
- Warranty: 12 Months (From date of shipment)
- Ship From: Shenzhen, China (Domestic: 2-3 days; International: 5-7 days via DHL/FedEx)
GE IS220PDIOH1B 336A5026ADP6
GE IS220PDIOH1B 336A5026ADP6
GE IS220PDIOH1B 336A5026ADP6
GE IS220PDIOH1B 336A5026ADP6
Technical Specifications
The IS220PDIOH1B is a high-speed I/O pack designed for critical control applications, offering robust isolation and configuration flexibility.
- Input Capability: 12 discrete inputs, software-configurable for contact monitoring, voltage sensing, or current sensing.
- Output Capability: 6 discrete outputs, typically capable of driving solenoids, relays, or indicators.
- Communication: Ethernet-based I/O communication (I/O Net) to the controller.
- Physical Architecture: Compact, modular design consisting of a base board and a terminal board (I/O pack plugs directly into the terminal block).
- Environmental Protection: Conformal coating (G3 level) to ensure longevity in harsh utility or petrochemical environments.
- Diagnostic Features: Comprehensive self-diagnostics including power health monitoring, communication status, and loop status reporting.
Typical Deployment Scenarios
This I/O pack is essential for managing binary logic in complex systems:
- Turbine Control: Monitoring limit switches, fire protection system triggers, and emergency shutdown (ESD) logic.
- Power Generation: Managing auxiliary relay sequences for lubrication pumps, cooling fans, and breaker status monitoring.
- Oil & Gas: Interfacing with valve position sensors, solenoid actuators, and localized process alarms in distributed control networks.
Troubleshooting & Field Diagnostics
❗ SAFETY FIRST: Always verify that the I/O rack is de-energized or follow your facility’s specific safety procedures for hot-swapping control components before touching the PDIO pack.
- Status LEDs:
- Power LED (Green): Indicates healthy internal DC supply.
- Link LED (Green/Amber): Monitors the Ethernet I/O Net communication. A blinking pattern often indicates a heartbeat failure between the pack and the controller.
- Fault LED (Red): Indicates a hardware-detected fault (e.g., failed self-test, internal memory error, or output circuit short).
- Configuration Mismatch: The PDIO pack must be configured in the Mark VIe software (ToolboxST) to match the physical terminal board wiring. If you replace the unit and the “I/O Config Mismatch” alarm persists, verify the terminal board version and software settings.
- Field Wiring Verification: Use the diagnostic screens in the control software to check the voltage level of individual input points. If the software reads a “Low” state when the physical field device is clearly “High,” check the terminal board for blown fuses or loose field connections.
Procurement & Installation Advice
- Version Check: Ensure the suffix (e.g., H1B) matches your existing system design. While newer versions may be backwards compatible, Mark VIe systems are sensitive to firmware updates; verify your ToolboxST project configuration before replacing.
- Terminal Board Compatibility: The IS220PDIOH1B is designed to plug into a corresponding terminal board (e.g., TPDIO). Ensure your terminal board is clean and the pins are not bent, as these modules rely on precise alignment to maintain signal integrity.
- Storage: Store in an anti-static, moisture-controlled environment. The internal logic is highly sensitive to ESD (Electrostatic Discharge) and high humidity.
