Description
Key Technical Specifications
| Parameter | Specification |
| Manufacturer | General Electric (GE) |
| Model / Part Number | IS220PDIOH1B |
| System Compatibility | Speedtronic Mark VIe Control Platform |
| Module Type | Discrete Input/Output Distributed I/O Pack (PDIO) |
| Communication Ports | Dual 10/100 Mbit/s RJ45 Ethernet Connectors (IONet Interface) |
| Input Power | 28.0 V DC nominal (27.4 V DC to 28.6 V DC operational range) |
| Processor Architecture | Onboard 32-bit ARM High-Performance Embedded Processor |
| Terminal Board Mating | Direct mounting to TDIO / TBDIO / TCDIO terminal boards |
| Redundancy Configurations | Supports Simplex, Dual, and Triple Modular Redundant (TMR) IONet setups |
| Operating Temperature | −30°C to +65°C |
| Hazardous Location Certs | Class I, Division 2 / Zone 2 Compliant |
Product Introduction & Supply Chain Strategy
The GE IS220PDIOH1B is a high-reliability discrete I/O pack engineered for General Electric Speedtronic Mark VIe turbine control networks. It mounts directly onto compatible discrete terminal boards (such as the TDIO, TBDIO, or TCDIO) to digitize discrete field inputs and drive output relays, transmitting high-speed diagnostic and control data over dual redundant Ethernet IONet backbones.
This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.
Refurbished I/O packs pose severe risks due to degraded electrolytic capacitors, micro-fissures in internal multi-layer PCB traces, and worn Ethernet interface controllers. A failure in a discrete I/O pack handling turbine trip permissives or flame detector feedback can trigger immediate false trips—costing upwards of $100,000 per event in unearned generation—or fail to register a critical interlock during emergency shutdown sequences. Sourcing genuine New Surplus inventory guarantees uncompromised hardware logic, lowers your Total Cost of Ownership (TCO), and secures exact-fit replacements for critical plant buffer stock.

IS220PDIOH1B

IS220PDIOH1B
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Execute Lock-Out/Tag-Out (LOTO) protocols on the control cabinet and field power distribution circuits.
- Put on a grounded anti-static wrist strap to protect delicate Ethernet physical layer transceivers and onboard processors from electrostatic discharge (ESD).
- Document network IONet port connections (IONet 1/2) and secure configuration backups via ControlST / ToolboxST software.
Stage 2: Removal
- Disconnect the dual RJ45 IONet Ethernet cables from the front face of the PDIO pack.
- Loosen the two mounting screws holding the pack to the underlying terminal board connector posts.
- Pull the IS220PDIOH1B straight off the multi-pin D-type connector to avoid bending or stressing signal pins.
Stage 3: Installation (Clone & Seat)
- Inspect the mating connector pins on the terminal board for cleanliness, debris, or damage.
- Align the connector on the rear of the new IS220PDIOH1B with the terminal board header and press firmly until fully seated.
- Tighten the captive mounting screws to secure the module mechanically to the terminal base frame.
- Reattach the dual Ethernet cables to their designated IONet ports.
Stage 4: Power-On & Testing
- Restore 24V DC power to the terminal board and observe the diagnostic LEDs on the IS220PDIOH1B front panel.
- Verify that the PWR LED lights solid green, LINK/ACT LEDs show network activity, and no red FAIL LEDs remain illuminated.
- Open ControlST ToolboxST to confirm that the controller recognizes the replacement I/O pack by serial number and updates firmware state automatically if configured.
Firmware/Software Versions & Upgrade Notes
- System Compatibility: Confirm that the firmware build installed on the IS220PDIOH1B aligns with your Mark VIe ControlST system baseline (e.g., V04.03 or later).
- Auto-Reconfiguration: In Mark VIe architectures, replacement I/O packs typically support Auto-Reconfiguration (Auto-Reconfig), where the active controller pushes matching software and IP configuration parameters to the newly inserted pack upon power-up.
- Firmware Risks: Never interrupt Ethernet network traffic or power connections during an automated firmware flash sequence. Aborting a flash write corrupts onboard flash memory, rendering the I/O pack unbootable.
Frequently Asked Questions (FAQ)
Q: Is this GE discrete I/O pack genuine New Surplus or a refurbished unit?
A: This unit is 100% genuine New Surplus. It has zero field operating runtime hours, pristine multi-pin interface connectors, unmarred mounting posts, and clean Ethernet sockets. It is not refurbished, repaired, or harvested from active equipment.
Q: Why should I choose New Surplus over a refurbished pack?
A: Refurbished I/O packs carry hidden risks of thermal fatigue on surface-mount components and degraded Ethernet PHY transceivers. An I/O pack failure on a live Mark VIe system can cause channel dropouts, false alarm floods, or unwanted turbine trips. New Surplus guarantees original factory reliability and full service life.
Q: How is the verified prior to shipment?
A: Every unit undergoes multi-point Quality Control inspection. Our technicians conduct visual component checks, verify interface pin integrity, perform power-on diagnostic boot testing, and validate Ethernet link handshake routines.
Q: Does replacing an require manual IP address setting?
A: No. In GE Mark VIe networks, the controller uses the terminal board location and pack ID to assign network parameters automatically via the ControlST platform when Auto-Reconfig is enabled.
Q: Can this pack be used in a Triple Modular Redundant (TMR) system?
A: Yes. In a TMR setup, three separate packs mount onto a single TMR-capable terminal board (such as the TBDIO or TCDIO), communicating independently over separate IONet network channels (R, S, and T).
Q: What warranty coverage applies to this item?
A: This New Surplus GE includes a standard 1-Year functional replacement warranty covering electronic and manufacturing defects.

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