The GE IS210MACCH1AKH is a specialized Ethernet communication hub and I/O interface board designed for the Mark VIe and Mark VIeS control systems. Functioning as a “Cabinet Hub,” it serves as the central networking and power distribution point within a MACS (Main Automation Control System) cabinet. It facilitates the high-speed communication between the control processors and the distributed I/O packs located throughout the turbine or industrial facility.
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Technical Description and Parameters
The MACCH board acts as a bridge between the UDH (Unit Data Highway) and the internal IONet (I/O Network). It provides the physical connectivity and logic required to route data packets in a Triple Modular Redundant (TMR) or dual-redundant environment.
- Module Type: MACS Cabinet Hub Board
- Series: Mark VIe / Mark VIeS
- Network Interface: Integrated 10/100 Ethernet switching for IONet
- Redundancy: Supports R, S, and T network paths for TMR configurations
- Power Input: Dual 28V DC power inputs for redundant power sourcing
- Fiber Optic Support: Often equipped with SFP ports for fiber-optic IONet extensions to remote cabinets
- Diagnostics: Onboard monitoring of cabinet temperature, fan status, and power supply health
Product Datasheet Specifications
- Revision: AKH (Indicates specific hardware build and conformal coating status)
- Dimensions: Approximately 20.3 cm x 15.2 cm (Standard Mark VIe large-format board)
- Weight: 0.65 kg (1.43 lbs)
- Mounting: Vertical or horizontal DIN-rail mounting within the control cabinet
- Operating Temperature: -30°C to +65°C (-22°F to +149°F)
- Coating: Conformal coating for protection against corrosive gases (G3 rated)
Application Fields
The IS210MACCH1AKH is a backbone component for large-scale GE control architectures:
- Thermal Power Plants: Managing the data flow for GE Gas and Steam turbines.
- Nuclear Power: Used in Mark VIeS safety-instrumented systems for high-reliability data routing.
- Renewable Energy: Centralized control for large wind farm collector stations.
- Combined Cycle Plants: Coordinating the synchronization between the Gas Turbine, HRSG, and Steam Turbine controllers.
Product Instructions for Use
- Installation: Mount the board on the cabinet backplane. Ensure that all Ethernet cables are shielded and that the grounding strap is securely connected to the cabinet’s common ground bus to prevent EMI.
- Fiber Optic Connection: If utilizing the fiber ports for remote I/O, ensure the fiber type (Single-mode or Multi-mode) matches the SFP transceiver installed on the MACCH board.
- Power Sequencing: Connect both power feeds. The MACCH board features internal auctioneering diodes, allowing it to stay online even if one power source fails.
- Network Configuration: The hub is largely “transparent” to the network but must be correctly identified in ToolboxST to enable cabinet health diagnostics (fan/temp monitoring).
Q&A: Frequently Asked Questions
Q: What is the difference between the “AKH” and earlier “A” revisions? A: The “AKH” suffix typically denotes a more recent hardware revision that includes updated SFP port compatibility and improved thermal management components. It is generally backward compatible with systems using the IS210MACCH1A.
Q: Can this board be used in a Mark VI (non-e) system? A: No. The MACCH board is specifically designed for the Ethernet-based IONet architecture of the Mark VIe. Older Mark VI systems use the VME-bus and different cabling standards.
Q: Does it support safeethernet? A: Yes. When used within a Mark VIeS (Safety) configuration, the MACCH hub is fully capable of routing safeethernet packets between safety-certified I/O packs and controllers.
Related Product News
As of 2026, GE Vernova has emphasized the importance of the MACCH hub in their “Grid Modernization” strategy. Because the IS210MACCH1AKH supports high-speed fiber-optic uplinks, it is increasingly being used to replace older copper-based IONet runs in aging power plants. This shift significantly reduces signal latency and improves lightning strike resilience in distributed control cabinets. Furthermore, latest firmware patches for the Mark VIe system have enhanced the “Cabinet Intelligence” features of the MACCH board, allowing it to report real-time power consumption metrics for each connected I/O pack, facilitating better energy management within the control room.
