Products Description
GE IS220PDIIH1B Mark VIe Discrete Input PDII I/O Pack in stock
GE IS220PDIIH1B is a PDII discrete input I/O pack designed for GE Mark VIe distributed turbine control system. It collects field discrete digital signals from switches and relay contacts, and transmits data to Mark VIe controller through IONet dual Ethernet interface.

This module provides galvanic isolation for each input channel to suppress ground loop and electromagnetic interference. It works with matched terminal boards for field wiring connection. It is discontinued legacy spare part widely used for gas & steam turbine control system maintenance in power and oil & gas industries.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | GE |
| 2 | Model | IS220PDIIH1B |
| 3 | Module Type | Discrete Input PDII I/O Pack |
| 4 | Applicable System | GE Mark VIe Turbine DCS System |
| 5 | Input Type | 24VDC discrete digital input |
| 6 | Communication | Dual IONet Ethernet ports |
| 7 | Isolation | Galvanic channel isolation |
| 8 | Operation Temperature | -30℃ ~ +65℃ |
| 9 | Matched Device | Compatible with Mark VIe terminal boards |
| 10 | Status | Discontinued legacy DCS spare part |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Collect field discrete status signals from limit switches, pressure switches and relay auxiliary contacts. |
| 2 | Galvanic isolation protects controller circuit from ground loop interference and surge damage. |
| 3 | Dual redundant IONet Ethernet ports ensure reliable real-time communication with Mark VIe UCS controller. |
| 4 | Onboard LED indicators display module power, link and channel working status. |
| 5 | Cooperate with terminal boards to complete field signal wiring and signal conditioning for turbine interlock system. |
Application Scenarios
| No. | Application |
|---|---|
| 1 | GE Mark VIe gas turbine and steam turbine control & interlock system for power plants |
| 2 | Oil & gas compressor unit safety interlock and discrete status monitoring system |
| 3 | Power plant sequence control and discrete signal acquisition for auxiliary equipment |
| 4 | Legacy Mark VIe turbine control system spare replacement and on-site maintenance |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q: What is GE IS220PDIIH1B? A: It is PDII discrete input I/O pack for Mark VIe turbine DCS, used for collecting field digital switch signals. |
| 2 | Q: What is IONet? A: IONet is Mark VIe high-speed redundant Ethernet communication bus between I/O packs and main controller. |
| 3 | Q: Does this module need separate terminal board? A: Yes, it needs matched Mark VIe terminal board to connect field wiring signals. |