GE IS210MACCH2A & IS210MACCH2AKH Modules - IS210MACCH2A IS210MACCH2AKH

Technical Dossier

Product Details And Specifications

GE IS210 Series Technical Notes

The GE IS210 series forms the backbone of the Mark VI Speedtronic turbine control system, one of the most widely deployed distributed control architectures in heavy industrial environments. Installed across gas turbine power plants, combined-cycle facilities, petrochemical refineries, offshore platforms, and nuclear auxiliary systems, the Mark VI platform governs turbine sequencing, protection logic, I/O interfacing, and inter-controller communication. The IS210 module family represents the field-side hardware layer of this architecture — responsible for analog and digital signal conditioning, terminal board interfacing, and backplane communication with the Mark VI controller rack.

The IS210MACCH2A and its hardware revision variant IS210MACCH2AKH are I/O interface boards designed for use within the Mark VI terminal board assembly. These modules handle analog and contact I/O marshalling between field instrumentation and the Mark VI controller, operating within the VME-based backplane environment. The suffix "KH" denotes a specific hardware revision level tracked by GE's internal configuration management system and does not alter the functional specification of the base part.

The Evolution of IS210 Architecture

The IS210 module family was introduced as part of GE's transition from the Mark V (IS200 series) to the Mark VI control platform in the mid-1990s. The Mark V used a parallel backplane architecture with dedicated processor boards (TCCA, TCPS, TCQC), while the Mark VI adopted a VME-based serial backplane with distributed I/O terminal boards connected via the IONet (a proprietary 100 Mbps Ethernet derivative). This architectural shift required a new generation of I/O interface hardware — the IS210 series — capable of supporting triple-redundant (TMR) and simplex control configurations.

Early IS210 revisions (suffix A, B) established the base electrical and mechanical form factor. Subsequent revisions (C through KH and beyond) addressed field-reported issues including connector wear, conformal coating specifications for high-humidity environments, and firmware-compatible EEPROM updates. Compatibility between hardware revisions is generally maintained within the same base part number, but GE's Mark VI configuration tool (ToolboxST) tracks revision levels for system validation purposes. Integrators replacing IS210 modules in legacy installations must verify the hardware revision against the site's ToolboxST configuration file to avoid validation warnings.

IS210 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced components within the GE IS210 module family, organized by functional category:

I/O Interface & Marshalling Boards

• IS210MACCH2A: Mark VI analog/contact I/O marshalling board, base hardware revision
• IS210MACCH2AKH: IS210MACCH2A hardware revision KH; functionally equivalent, updated conformal coating
• IS210AEBIH3A: Analog input terminal board, 16-channel, 4–20 mA / thermocouple input
• IS210AEBIH3B: Analog input terminal board revision B; updated EMI shielding specification
• IS210BAIAH1A: Analog output terminal board, 8-channel, 4–20 mA output for valve positioners
• IS210BAIAH1B: Analog output terminal board revision B; extended temperature range
• IS210DCDBH1A: Digital contact input board, 24 VDC, 32-channel discrete input interface
• IS210DCDBH1B: Digital contact input board revision B; improved optical isolation specification

CPU & Controller Modules

• IS210CPNBH1A: Mark VI main controller board (VCMI equivalent); VME backplane CPU module
• IS210CPNBH1B: Controller board revision B; updated flash memory and watchdog timer circuit
• IS210CPNBH2A: Controller board variant 2; extended RAM for large I/O point counts

Communication & Network Adapters

• IS210ENET1A: IONet Ethernet communication module; 100 Mbps Mark VI network interface card
• IS210ENET2A: IONet Ethernet module revision 2; dual-port configuration for TMR redundancy
• IS210VCMIH2C: VME communication module; interfaces Mark VI controller to IONet and UDH networks
• IS210VCMIH2D: VCMI revision D; updated firmware for ToolboxST R04 and later compatibility

Power Supply Modules

• IS210PSOPH1A: Mark VI panel power supply output board; 28 VDC regulated output for I/O terminal boards
• IS210PSOPH1B: Power supply output board revision B; enhanced short-circuit protection

Quality Control for the IS210 Range

IS210-series modules present specific test challenges due to their VME backplane interface, IONet communication stack, and mixed analog/digital signal conditioning circuits. DriveKNMS applies the following test procedures to IS210 inventory: