GE IS210 Series Modules: IS210MACCH1AKH & IS210BPPBH2CAA —

Technical Dossier

Product Details And Specifications

GE IS210 Series: Comprehensive Module Range and Technical Overview

The GE IS210 series is a family of printed circuit board assemblies engineered for the GE Mark VI and Mark VIe turbine control systems, as well as the EX2100 excitation control platform. These modules are deployed across critical heavy-industry installations worldwide, including combined-cycle power plants, nuclear auxiliary systems, offshore oil and gas platforms, petrochemical refineries, and LNG processing facilities. The IS210 series functions as the hardware backbone of GE's distributed control architecture, handling I/O termination, processor communication, power conditioning, and protection relay logic within a single unified backplane ecosystem. Installed base spans hundreds of sites across North America, Europe, the Middle East, and Asia-Pacific, making long-term parts availability a primary operational concern for plant engineers and reliability teams.

The Evolution of IS210 Architecture

The IS210 series was introduced alongside the Mark VI turbine control system in the mid-1990s as GE Power's successor to the Mark V platform. Early IS210 modules used VME-based backplane communication and were designed for triple-redundant (TMR) or simplex control configurations. The initial release focused on core I/O: analog input/output boards, discrete I/O termination assemblies, and dedicated processor cards.

With the transition to the Mark VIe platform in the mid-2000s, GE introduced Ethernet-based I/O communication (IONet) while maintaining backward-compatible IS210 form factors for many module types. This created a dual-generation compatibility challenge: IS210 boards designed for Mark VI VME backplanes are not directly interchangeable with Mark VIe Ethernet-native variants without corresponding firmware and backplane verification. Plant engineers upgrading from Mark VI to Mark VIe must audit each IS210 slot individually.

By 2015, GE had formally placed the original Mark VI on a lifecycle sunset path, with end-of-active-support milestones reached for many IS210 sub-variants. The Mark VIe and its successor architectures (Mark VIeS for steam, Mark VIeC for combined cycle) continue to use IS210-form-factor modules, but original Mark VI IS210 assemblies are now sourced exclusively through the aftermarket. This lifecycle status makes verified surplus inventory from specialized distributors the primary supply channel for maintenance and emergency replacement.

IS210 Full Catalog & Functionalities (SKU List)

The following SKUs represent confirmed IS210 series assemblies categorized by functional role. Each entry reflects a distinct board assembly with a defined role within the Mark VI / Mark VIe control architecture.

Backup & Protection Modules

• IS210MACCH1AKH: MACC board — Mark VI application controller communication card, handles inter-module data arbitration and redundancy switchover logic.
• IS210BPPBH2CAA: BPP board — backup protection processor, executes independent overspeed and flame-out protection logic separate from the primary controller.
• IS210BPPBH1BDB: BPP variant — earlier hardware revision of the backup protection processor; functionally equivalent to H2CAA with revised component tolerances.

Processor & Controller Modules

• IS210VCMIH2C: VCMI — VME communication interface card, primary backplane communication bridge for Mark VI TMR systems.
• IS210VCMIH2B: VCMI earlier revision — same functional role as H2C; verify firmware compatibility before substitution.
• IS210CPNBH3A: CPN — control processor board, executes turbine sequencing and PID control algorithms.
• IS210CPNBH3B: CPN revision B — updated processor clock speed and expanded memory addressing over H3A.

Analog I/O Modules

• IS210AEAAH1A: AEAA — analog input termination board, 16-channel thermocouple and RTD input conditioning.
• IS210AEBAH1A: AEBA — analog input board variant for 4–20 mA process signal termination.
• IS210AMAAH1A: AMAA — analog output module, 8-channel 4–20 mA current output for valve positioner and actuator control.
• IS210ATASAH1A: ATASA — analog terminal assembly for speed and acceleration signal conditioning from magnetic pickups.

Discrete I/O Modules

• IS210DAIAH1A: DAIA — discrete input assembly, 24 VDC contact input termination for limit switches and permissive logic.
• IS210DAOAH1A: DAOA — discrete output assembly, relay-driven output board for solenoid valve and alarm annunciator control.
• IS210EDCIH1A: EDCI — enhanced discrete contact input board, 48-channel high-density discrete input for large I/O count applications.

Power Supply Modules

• IS210PSVOH1A: PSVO — power supply and voltage output board, provides regulated 5 VDC and 24 VDC rails to the IS210 backplane.
• IS210PSVOH2A: PSVO revision 2 — updated switching topology with improved EMI filtering for installations near high-voltage switchgear.

Communication & Network Modules

• IS210ENETIH1A: ENETI — Ethernet network interface board for Mark VIe IONet communication; not compatible with Mark VI VME backplanes.
• IS210SRTDH1A: SRTD — serial RTD input board, dedicated resistance temperature detector input for bearing and winding temperature monitoring.

Sourcing Hard-to-Find & Obsolete IS210 Parts

The IS210MACCH1AKH and IS210BPPBH2CAA, along with the majority of original Mark VI IS210 assemblies, are no longer manufactured by GE Vernova (formerly GE Power). OEM lead times for new production are indefinite; the practical supply channel for these parts is the certified surplus and aftermarket distribution network.

DriveKNMS maintains a dedicated inventory of IS210 series modules sourced from decommissioned Mark VI panels, controlled plant shutdowns, and OEM overstock liquidations. Each unit entering the DriveKNMS inventory is logged with its hardware revision, firmware label (where readable), and physical inspection record. For plant operators managing aging Mark VI installations with no near-term upgrade budget, DriveKNMS provides a documented supply chain for emergency replacement and scheduled preventive maintenance stock.

For obsolete IS210 variants not listed in current inventory, DriveKNMS operates a global sourcing network to locate specific hardware revisions. Customers with multi-unit requirements or standing maintenance contracts are encouraged to submit a consolidated parts list for priority allocation.

Quality Control for the IS210 Range

IS210 modules present specific test challenges due to their VME backplane interface, multi-layer PCB construction, and mixed analog/digital signal paths. DriveKNMS applies the following verification procedures to all IS210 units prior to shipment:

• Visual inspection: Full board examination for capacitor bulge, trace corrosion, connector pin damage, and conformal coating integrity.
• Backplane interface test: Each module is seated in a compatible Mark VI test rack and powered through the standard IS210 backplane voltage rails to verify bus communication handshake.
• Functional I/O verification: For I/O boards, all input and output channels are exercised with calibrated signal sources and loads to confirm channel-level accuracy within OEM specification.
• Protection logic validation: For BPP-class modules (including IS210BPPBH2CAA), overspeed trip threshold logic is verified against GE Mark VI configuration parameters using a hardware-in-the-loop test fixture.
• Firmware label documentation: Hardware revision and firmware version labels are photographed and included in the shipment documentation package.

All tested units are shipped in anti-static packaging with desiccant and are accompanied by a DriveKNMS inspection report.