Description

The GE IS220PDIAH1B is a 16-channel analog input(AI)module engineered for the Mark VIe and Mark VIeS turbine control systems—part of GE’s Speedtronic™family used globally to control gas turbines,steam turbines,and combined-cycle power plants.

This high-density I/O module digitizes critical process signals such as pressure,temperature,flow,level,and vibration from field transmitters(typically 4–20 mA or±10 V)and delivers them to the Mark VIe controller for real-time monitoring,sequencing,and protection logic.The“H”in the model denotes HART communication support,enabling digital access to smart transmitter diagnostics without disrupting the analog signal—ideal for predictive maintenance.

Designed for redundant(TMR–Triple Modular Redundant)or simplex configurations,the IS220PDIAH1B features galvanic isolation,channel-level diagnostics,and hot-swap capability,ensuring continuous operation during maintenance.It mounts in GE’s I/O Pack(e.g.,IS200/IS220 series chassis)and communicates via the I/ONET fiber-optic backplane,providing high-speed,noise-immune data transfer even in high-EMI environments like turbine enclosures.

Application Scenarios

At a 570 MW combined-cycle plant in Texas,operators struggled with intermittent flame scanner signal loss on an F-class gas turbine,causing nuisance trips.Investigation revealed ground loops in legacy analog cards.After upgrading to IS220PDIAH1B modules—with their channel-to-channel optical isolation and±30 V common-mode rejection—signal integrity was restored.Additionally,engineers used the HART pass-through feature to remotely read flame scanner health metrics during operation,reducing inspection outages by 50%.The module’s integration into the Mark VIeS cyber-secure architecture also satisfied new NERC CIP audit requirements for I/O traceability.

Parameter

Main Parameters Value/Description

Product Model IS220PDIAH1B

Manufacturer GE Power→GE Vernova(Speedtronic™platform)

Product Category 16-channel analog input(AI)I/O module

Compatible Systems Mark VIe,Mark VIeS,Mark VIeW(wind)

Input Channels 16 differential inputs

Input Signal Types

–4–20 mA(most common,powered or passive)

–0–20 mA

–±10 VDC(configurable per channel)

Input Impedance

–250Ω(for 4–20 mA)

–>100 kΩ(for voltage inputs)

Resolution 16-bit A/D converter

Accuracy±0.1%of full scale(typical)

Isolation Galvanic isolation between field and system ground;500 Vrms channel-to-channel

HART Support Yes–transparent HART communication over 4–20 mA lines(requires HART modem in controller or external gateway)

Update Rate~10 ms per channel(system-dependent)

Diagnostics Per-channel open-circuit,over/under-range,and sensor fault detection

LED Indicators

–Green:Module OK/Powered

–Yellow:Channel fault or I/O error

–Red:Critical hardware failure

Operating Temperature 0°C to+60°C(industrial grade)

Mounting Slide-in module for IS220 I/O Pack(fiber-connected to controller)

Power Supplied via I/O Pack backplane(no external power needed)

Certifications UL 61010-1,CSA,CE,IEEE 472,RoHS,NEMA 4X(when installed in rated enclosure)

Redundancy Fully compatible with TMR(Triple Modular Redundant)Mark VIe architectures

Technical Principles and Innovative Values

Innovation Point 1:HART Transparency–Enables digital device management without sacrificing analog reliability—bridging legacy and IIoT strategies.

Innovation Point 2:Fiber-Optic I/ONET–Eliminates ground loops and EMI by using optical links between I/O packs and controllers.

Innovation Point 3:TMR Synchronization–In redundant systems,all three IS220PDIAH1B modules sample simultaneously for voting logic—critical for trip signals.

Innovation Point 4:Predictive Diagnostics–Open-wire and drift detection reduce unplanned outages by flagging sensor degradation before failure.

Application Cases and Industry Value

Gas Turbine:Monitors combustion pressure pulsations;16-bit resolution captures subtle instabilities before lean-blowout events.

Steam Cycle:Reads boiler drum level DP cells with±0.1%accuracy—ensuring feedwater control stability during ramping.

Hydro Plant:Used in wicket gate position feedback loops;differential inputs reject common-mode noise from generator fields.

Related Product Combination Solutions

Mark VIe Controller(e.g.,IC698CRE030):Central processing unit that receives data from IS220 modules.

IS220PDOAH1B:Companion 16-channel analog output module for valve/actuator control.

IS220PSDTH1B:Digital input module for limit switches and breaker status.

GE ToolboxST/WorkstationST:Configuration and diagnostics software for Mark VIe systems.

Emerson AMS Device Manager:Integrates with HART-enabled IS220PDIAH1B for asset health monitoring.

Phoenix Contact PT 4-5DC/1AC:External power supplies for 2-wire transmitters(if not loop-powered).

ABB Ability™Genix:Can ingest Mark VIe data via OPC UA for enterprise analytics.

SEL-3530 RTAC:Bridges Mark VIe data to SCADA via DNP3 or IEC 61850.

Installation,Maintenance,and Full-Cycle Support

Installation:

Insert module into IS220 I/O Pack(ensure fiber I/ONET cables are connected).

Secure with retention screw.

Connect field wiring to removable terminal blocks(AWG 14–24).

Configure channel types(mA/V)and scaling in ToolboxST.

Maintenance:

Monitor WorkstationST for“Bad Quality”tags or diagnostic alarms.

Use HART communicator to verify transmitter calibration without loop interruption.

Replace if multiple channels show drift or fault LEDs persist after wiring check.

We supply new surplus and factory-refurbished GE IS220PDIAH1B modules,each verified for:

✅All 16 channels(accuracy,linearity,fault detection)

✅HART signal pass-through

✅Communication with Mark VIe I/O Pack

✅LED and diagnostic functionality

Includes 12-month warranty,original manuals,and firmware compatibility report.

Obsolescence&Migration Advisory

The IS220PDIAH1B remains in active production under GE Vernova as a core component of the Mark VIeS platform(enhanced for cybersecurity and cloud integration).It is not obsolete and is recommended for both new builds and life-extension projects.

For legacy Mark VI users:

✅Direct upgrade path to Mark VIeS with I/O reuse

✅Leverage HART data for digital twin initiatives

Contact us for cross-compatibility checks,configuration backups,or spares planning for your GE IS220PDIAH1B in turbine control systems.Ensure your analog signals remain precise,secure,and always actionable—with industrial-grade I/O from GE Vernova.

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