GE IS220PDIIH1B (336A5026ADP1) PDII Isolated Discrete Input I O Pack For Mark VIe Speedtronic Turbine Control
- Product Code: IS220PDIIH1B 336A5026ADP1
- Availability: In Stock
GE IS220PDIIH1B (336A5026ADP1) PDII Isolated Discrete Input I/O Pack For Mark VIe Speedtronic Turbine Control
Manufacturer: GE Vernova (GE Energy Speedtronic Turbine Division)
Part Number: Functional model IS220PDIIH1B, drawing number 336A5026ADP1 (PDII isolated digital input pack, Rev C)
Product Type: BPPC Ethernet I/O pack, rack plug-in isolated discrete contact input processor card for Mark VIe simplex/TMR turbine control racks
Matching Platform: GE Mark VIe / Mark VIeS gas/steam turbine control system, compatible with IS230TDBTH6A field terminal base, supports simplex and triple redundant TMR architectures
Core Function: 24 group-isolated dry/wet contact digital input channels; support 24/48/125VDC field wetting voltage; high-precision SOE sequence-of-event time stamping; per-channel wire break/open circuit fault diagnosis; hardware anti-bounce signal filter; dual redundant ENET1/ENET2 100Mbps Ethernet BPPC bus communication; front panel channel LED status indicators; module power/link/fault diagnostic lamps; 2500V dielectric isolation between field contacts and internal logic; hot-swap plug-and-play design
1. Product Overview
IS220PDIIH1B (336A5026ADP1) is the core isolated discrete input I/O pack for GE Mark VIe turbine control systems, used together with IS230TDBTH6A field terminal base to collect all safety interlock and equipment status contact signals from gas/steam turbine sites.
It integrates 24 group-isolated digital input circuits to acquire breaker position feedback, valve limit switches, emergency trip contacts, flame detector signals, pump/motor running status, auxiliary relay interlock contacts, and other critical discrete signals for turbine protection and closed-loop control. It supports three mainstream plant wetting voltage grades (24VDC / 48VDC / 125VDC) to match standard power plant contact equipment.
Built-in high-speed sampling circuit provides microsecond-level SOE event time stamping, which is essential for post-fault sequence analysis of turbine trips and protection actions. Each channel is equipped with hardware anti-bounce filters to eliminate contact chatter and industrial electromagnetic noise, preventing false safety trips caused by signal interference.
Dual independent ENET1/ENET2 Ethernet ports implement redundant BPPC I/O bus communication with Mark VIe controllers; single network link failure will not interrupt signal acquisition. 2500VAC galvanic isolation completely separates high-voltage field contact circuits from low-voltage control logic, blocking ground loop offset and surge damage to the main controller.
Front panel LED array displays real-time on/off status for all 24 channels, plus dedicated PWR, ATTIN, Tx/Rx LINK diagnostic indicators for rapid on-site troubleshooting. The module supports hot swapping without shutting down the entire control rack, minimizing unit downtime during maintenance.
Full IPC-CC-830 conformal coated PCB, wide-temperature industrial hardware, metal heat sink housing, stable long-term operation in high-vibration, high-dust power plant control room environments. Cannot operate standalone; must pair with matched IS230TDBTH6A terminal base to complete field discrete signal wiring and acquisition.
This I/O pack is a critical spare replacement part for combined-cycle power plant Mark VIe turbine control cabinets, widely used for unit overhaul, discrete channel wiring fault replacement and routine system maintenance.
2. Complete Technical Specifications
• Compatible System: GE Speedtronic Mark VIe / Mark VIeS simplex & triple redundant TMR turbine control rack
• Matching Field Terminal Base: IS230TDBTH6A 24DI+12DO discrete wiring terminal board
• Digital Input Capacity: 24 group-isolated dry/wet contact input channels
• Supported Wetting Voltage Ranges: 16–32VDC / 32–64VDC / 100–145VDC (24/48/125VDC standard)
• Dielectric Isolation: 2500VAC isolation between field side and internal logic circuit
• Communication Interface: Dual 100Mbps Ethernet ENET1/ENET2 redundant BPPC I/O bus
• SOE Function: Microsecond precision time stamping for sequence of event recording
• Channel Diagnostics: Per-channel open wire, short circuit, contact fault detection
• Signal Filter: Configurable hardware anti-contact-bounce filter
• Module Operating Power: Nominal 24VDC rack logic power (22–28.6VDC tolerance), max power consumption 8.5W
• Front Panel Indicators: 24 channel status LEDs, PWR, ATTIN, ENET1 Tx/Rx LINK, ENET2 Tx/Rx LINK LEDs
• Hot Swap Support: Plug-and-play hot replacement without rack power shutdown
• Operating Temperature: -40℃ ~ +70℃ continuous ventilated cabinet operation
• Storage Temperature: -40℃ ~ +85℃; Relative Humidity: 5% ~ 95% RH non-condensing
• Overall Dimension: 149mm(H) × 86.2mm(W) × 121mm(D), net weight ~0.5kg
• PCB Protection: Full anti-corrosion conformal coating per IPC-CC-830 standard, anti-static industrial circuit board
• Certifications: UL508, CE, IEC61000 industrial EMC anti-interference certification
3. Core Hardware Advantages
1. 24 high-density group-isolated discrete input channels, single I/O pack collects all turbine safety interlock contact signals, greatly simplifies cabinet internal wiring layout
2. Three optional wetting voltage specifications, fully compatible with all mainstream power plant 24/48/125VDC field contact standards, no need to replace I/O packs for different voltage equipment
3. Microsecond-level SOE high-precision time stamping, meets power plant turbine protection event sequence recording requirements for accurate post-trip fault tracing and analysis
4. Dual redundant Ethernet BPPC bus communication + hot-swap design, single module or network link failure will not interrupt overall discrete signal acquisition, extremely high system fault tolerance and continuous operation capability
5. 2.5kV high-strength electrical isolation + full-channel self-diagnosis + visual front panel LED alarm, technicians quickly locate broken field wiring and contact faults without external test instruments
4. Typical Application Scenarios
• Combined cycle power plant Mark VIe gas/steam turbine safety interlock, breaker & valve feedback signal acquisition core PDII input pack
• Thermal power plant boiler, turbine generator emergency trip, flame detection, pump/motor status discrete signal processing module
• Offshore oil & gas platform heavy-duty gas turbine fire & gas detector, emergency shutdown contact input control pack
• Chemical plant industrial compressor anti-surge, safety isolation relay contact signal acquisition I/O pack
• Legacy Mark VIe turbine control cabinet upgrade overhaul, daily discrete channel wiring fault replacement spare IS220PDIIH1B (336A5026ADP1) module
GE Vernova © IS220PDIIH1B (336A5026ADP1) PDII Isolated Discrete Input I/O Pack For Mark VIe Speedtronic Turbine Control System