GE IS220PDIAH1B Discrete Input I/O Pack

Technical Specifications

Model: IS220PDIAH1B

Part Number: IS220PDIAH1B，336A5026ADP4

Brand: GE（GE Vernova）

Product Type: PDIA discrete digital input processing pack

Matching System: GE Speedtronic Mark VIe distributed turbine control system, work with discrete terminal boards

Power Supply:24VDC, typical 4.8W power consumption

Input Channels:16‑channel galvanic isolated discrete digital input

Input Signal Type:Dry‑contact, 24VDC sink/source input

Isolation:Field‑to‑backplane 2500VAC RMS galvanic isolation

Communication:Dual RJ45 100Mbps IONet redundant Ethernet interface

Installation:Mark VIe I/O cabinet plug‑in, hot‑swappable design

Operating Temperature:‑40℃ ~ +70℃, non‑condensing

Protection Class:IP20

Weight:0.38kg

Dimension:159mm ×108mm ×30mm

Compatible System:Power plant gas‑steam turbine, generator unit control cabinet

Core Function：PDIA discrete input processing pack for Mark VIe turbine control system. Cooperates with external discrete terminal boards to collect status signals from limit switches, pressure switches, protective relays and equipment contact feedback. Converts field contact signals into digital data for controller logic calculation. Supports simplex, dual and TMR triple‑modular redundant architectures, realizes turbine interlock protection, trip logic and high‑precision SOE sequence‑of‑event recording function.

Product Details

The IS220PDIAH1B (336A5026ADP4) is PDIA series discrete input I/O pack for GE Mark VIe Speedtronic distributed turbine control system.

This hot‑swappable compact I/O pack is plugged into Mark VIe standard I/O cabinet, matched with external discrete terminal boards to receive field dry‑contact signals. It provides 16‑channel isolated digital input channels, converts switch contact status into stable digital signals and transmits data to main controller via dual‑port redundant IONet Ethernet. It provides reliable switch‑state data for turbine safety protection, interlock and sequence‑of‑event recording logic.

Built‑in channel self‑diagnosis function can detect signal open‑circuit, short‑circuit and abnormal state, upload fault codes and alarm records to turbine controller. Conformal coated circuit board enhances anti‑vibration and anti‑interference capability, adapts to harsh electromagnetic environment of power‑plant turbine hall, meets hazardous‑area certification requirements.

It belongs to core discrete signal processing spare‑part for Mark VIe turbine control system, widely used in overhaul and renovation projects of gas‑steam turbine generating units.

It is important spare hardware for turbine discrete signal loop debugging and defective IS220PDIAH1B pack replacement.