GE IS220PDIIH1B – Mark VIe Discrete I/O Pack for Reliable Field Interlocking and Machine Protection

The GE IS220PDIIH1B is a Mark VIe I/O pack designed to interface discrete signals between field devices and the IONet control network. From my experience, it’s a solid choice when you need dependable on-skid interlocking, permissive logic, limit switches, or dry-contact feedback routed into a GE Mark VIe system without adding complexity. You might notice that it’s often paired with GE discrete terminal boards to provide isolated 24 VDC inputs and robust outputs for solenoids or relays, depending on the board used.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week for in-stock; no more than one month at the latest
• Payment: 50% advance payment, full payment for delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• Discrete I/O for Mark VIe – Handles digital input/output via the mated terminal board, ideal for permissives, trips, and sequencing.
• IONet connectivity – Dual 10/100BASE‑TX Ethernet ports typically used for redundant IONet connections to the Mark VIe controller.
• Field isolation through terminal boards – When used with GE discrete terminal boards, provides isolated 24 VDC inputs and robust output driving options.
• Hot‑swap friendly in redundant systems – In many cases, the pack can be replaced during a planned window without re-terminating field wiring, reducing downtime.
• Compact and serviceable – Tool‑less removal from the terminal board, onboard status LEDs, and firmware that can be updated with standard Mark VIe toolsets.
• Industrial temperature range – Built for cabinets in harsh environments common to turbines, compressors, and process equipment.

Technical Specifications

Related or Supporting Products

• IS220PDIOH1B – Discrete I/O pack combining input and output functions; often chosen when mixed DI/DO are required on the same board.
• IS220PDIAH1B – Discrete input‑focused pack; preferred for high‑count DI panels.
• IS220PAICH1B – Analog input pack; pairs with AI terminal boards for process signals (4–20 mA, RTD via appropriate boards).
• IS220PAOCH1B – Analog output pack; used for control outputs to positioners and drives.
• IS220PSVOH1B – Servo/valve I/O pack for hydraulic/electric actuator control in turbine applications.

Note: The IS220PDIIH1B relies on the specific terminal board model for electrical channel count and isolation ratings. If you share your existing board part number, I can match the pack and confirm exact I/O behavior.

Installation & Maintenance

• Cabinet environment – Install in a clean, ventilated control cabinet meeting IEC/UL standards. Maintain ambient within -30…+65°C and avoid condensation.
• Wiring practices – Land all field wiring on the terminal board; segregate high‑energy lines from low‑level signals. Use shielded cable where noise is expected.
• Network – Use industrial‑grade Cat5e/6 for the dual IONet ports. Redundant network paths are recommended for high availability.
• Grounding – Bond cabinet and terminal board grounds according to site standards; poor grounding is a common source of intermittent DI chatter.
• Hot‑swap and spares – In redundant configurations, packs are typically hot‑swappable. Keep at least one spare on hand for critical units.
• Routine care – Quarterly visual inspection, dust removal with dry air, check connectors for seating. Plan firmware updates during maintenance windows using ToolboxST.
• Field note – A maintenance lead told us they swapped an IS220 pack during a scheduled 10‑minute pause with no wiring rework—being able to lift off the pack while leaving the terminal board in place usually saves time.

Quality & Certifications

• Designed for GE Mark VIe platforms; CE compliant
• UL/cUL recognized components (typical for Mark VIe hardware)
• RoHS compliant materials where applicable
• Manufactured under ISO 9001 quality systems
• Manufacturer’s warranty: typically 1 year; we provide 365‑day coverage on supply

If you’re replacing an existing pack, sharing the current firmware level and terminal board P/N helps confirm drop‑in compatibility. For new projects, we can propose the matching terminal board and IONet topology so commissioning goes smoother.