GE IS220PRTDH1B I/O Pack – Protective Relay & Trip I/O Interface | Mark VIe Turbine Control Platform
The GE IS220PRTDH1B is a high-density, dual-redundant I/O Pack engineered for the GE Mark VIe distributed control platform. Designed to interface protective relay trip signals and discrete I/O in gas turbine, steam turbine, and combined-cycle power generation environments, this module delivers deterministic signal processing with the reliability demanded by mission-critical plant operations.
Engineering Background: The IS220PRTDH1B belongs to GE’s IS220 series I/O Pack family, purpose-built for the Mark VIe architecture introduced to replace the legacy Mark V and Mark VI platforms. It operates within the IONet high-speed communication backbone, enabling real-time data exchange with the VCMI controller card and redundant I/O voting logic.
Product Positioning: This module is the preferred choice for procurement engineers sourcing protective relay interface I/O for turbine control upgrades, spare parts inventory, or emergency replacement. Konmask.com supplies OEM-sourced, fully tested units with traceability documentation available upon request.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | IS220PRTDH1B |
| Series | GE Mark VIe IS220 I/O Pack |
| Module Type | Protective Relay Trip I/O Pack (Discrete) |
| Redundancy | Dual (TMR-compatible) |
| Communication Interface | IONet (Ethernet-based, 100 Mbps) |
| Input Channels | 24 discrete inputs (configurable) |
| Output Channels | 8 discrete outputs (relay-grade) |
| Input Voltage Range | 24 VDC nominal |
| Output Contact Rating | 2A @ 30 VDC / 0.5A @ 125 VAC |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH, non-condensing |
| Power Supply | 28 VDC via I/O Pack backplane |
| Weight | 360 g (approx.) |
| Mounting | Mark VIe I/O Pack rail / VCMI backplane |
| Certifications | CE, UL (per GE platform certification) |
| Firmware | Managed via ToolboxST configuration software |
Proven Application Environments
- Gas Turbine Control: GE Frame 6B, 7E, 7F, 9E, 9F series turbines with Mark VIe DCS
- Steam Turbine Protection: Overspeed trip, emergency stop, and protective relay interface circuits
- Combined-Cycle Power Plants: HRSG bypass, BOP discrete I/O integration
- Compressor Stations: Anti-surge and shutdown logic interfacing
- Offshore & Onshore Oil & Gas: Platform control systems requiring SIL-rated discrete I/O
- Retrofit & Upgrade Projects: Mark V / Mark VI to Mark VIe migration programs
Engineering Advantages
- Dual-Redundant Architecture: Supports TMR (Triple Modular Redundancy) voting when paired with VCMI and redundant I/O Packs — eliminates single points of failure in trip circuits.
- Hot-Swap Capability: Designed for online replacement without system shutdown, minimizing plant downtime during maintenance windows.
- Deterministic Scan Time: IONet communication ensures <10 ms I/O update cycle, critical for protective relay response timing.
- Isolated I/O Channels: Galvanic isolation on discrete inputs prevents ground loop interference from field wiring.
- ToolboxST Integration: Full configuration, diagnostics, and firmware management via GE’s ToolboxST engineering workstation — no proprietary hardware dongle required.
- Compact Form Factor: Rail-mount I/O Pack design reduces panel footprint versus legacy terminal board assemblies.
System Architecture & Signal Flow
The IS220PRTDH1B connects to the Mark VIe controller via the IONet Ethernet backbone. Field discrete signals (protective relay contacts, trip initiation signals) are wired to the I/O Pack’s terminal block. The pack digitizes and transmits signal states to the VCMI controller card at deterministic intervals. In TMR configurations, three IS220PRTDH1B packs vote on signal state before executing trip or permissive logic, ensuring no spurious trips from single-channel faults.
Typical signal flow: Field Device → IS220PRTDH1B Terminal Block → IONet → VCMI Controller → Mark VIe HMI / DCS
Sourcing & Quality Verification
- OEM Traceability: Units sourced from authorized GE distribution channels or decommissioned OEM plant inventories with documented chain of custody.
- Pre-Shipment Testing: Each module undergoes power-on functional verification and visual inspection prior to dispatch.
- Condition Grades Available: New surplus (sealed), refurbished (tested & certified), and used-tested — specify grade at inquiry.
- Documentation: GE datasheet, test report, and packing list provided with each shipment.
- Warranty: 12-month warranty against manufacturing defects on all tested units.
Procurement Process
- Submit RFQ: Contact support@konmask.com with quantity, required condition grade, and delivery timeline.
- Receive Quotation: Formal quotation with unit price, lead time, and shipping options issued within 24 hours.
- Order Confirmation: Purchase order accepted via email; proforma invoice issued for payment processing.
- Quality Inspection: Pre-shipment inspection report and photos provided upon request before dispatch.
- Shipping & Logistics: DHL / FedEx / UPS express available; EXW, FOB, CIF Incoterms supported.
- After-Sales Support: Technical support available post-delivery for installation and commissioning queries.
Technical FAQ
Q: Is the IS220PRTDH1B compatible with Mark VI (non-VIe) systems?
A: No. The IS220 series I/O Packs are designed exclusively for the Mark VIe platform. Mark VI systems use IS200-series terminal boards with a different backplane architecture.
Q: Can this module be used in a simplex (non-redundant) Mark VIe configuration?
A: Yes. The IS220PRTDH1B operates in simplex, dual, or TMR configurations depending on the VCMI controller setup and ToolboxST project configuration.
Q: What firmware version is required?
A: Firmware is managed by ToolboxST. GE recommends running the latest compatible ToolboxST release for your Mark VIe controller revision. Contact GE or your system integrator for firmware compatibility matrices.
Q: Do you provide export documentation for international shipments?
A: Yes. Commercial invoice, packing list, certificate of origin, and ECCN classification documentation are provided for all international orders.
Q: What is the lead time for in-stock units?
A: In-stock units ship within 1–3 business days. Lead time for sourced units is typically 5–15 business days depending on availability.
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