A factory-sealed IS220UCSAH1A controller for your Mark VIe spares kit

Keeping a spare controller on the shelf is the fastest way to recover from a control failure on a GE Speedtronic Mark VIe unit, and that is what this listing offers: an IS220UCSAH1A (revision IS220UCSAH1AC) as new surplus in the original factory package, backed by a one-year warranty. The UCSA is the standalone Mark VIe controller that runs the turbine or balance-of-plant application and coordinates the distributed I/O packs over IONet.

What this controller is and does

The module runs the QNX real-time operating system on a Freescale MPC8349 PowerQUICC II Pro processor at 667 MHz, stores its application and configuration on compact flash, and communicates through the Ethernet jack connectors on its faceplate. Those jacks carry the private IONet to the I/O packs and the plant links to HMI, operator and engineering stations and to companion controls such as Mark VI, Mark VIe and EX2100 excitation. The faceplate LEDs (Power, Boot, Online, Flash, DC, Diag and per-port Link/Act) report status at a glance. The controller is fanless, rated for Class I, Division 2 locations, and is not IEC 61508 certified, so it is not intended for SIL safety loops.

Diagnosing a controller fault before you install the new one

A sealed spare is only worth opening once you are sure the controller is the problem. Confirm the diagnosis so the spare is used on a genuine failure:

• Network before hardware: an offline indication at the HMI is often IONet or plant-network cabling, a switch or a port, not the controller.
• Compact flash and firmware: a corrupt or absent CF card or a version mismatch can stall startup; check these before condemning the module.
• Power and the DC LED: verify the control-power feed; a marginal supply mimics a failed controller.
• Scope of the fault: lost I/O points usually mean an I/O pack or an IONet branch, while a true controller fault takes the whole application offline.
• Diagnostics: read the Diag LED and ToolboxST alarms to pinpoint the fault first.

H1A, H1AC and matching your existing controller

IS220UCSA is the controller family, H1A is the hardware group and the trailing C (IS220UCSAH1AC) is the hardware revision. Match the group and revision to the controller you are standardizing on. The GE Speedtronic Part Number Decoder shows how the number is structured so you can verify your label.

Why a new UCSA is not plug-and-play

A factory-fresh controller ships without your plant's logic. Before it can run the machine it must be loaded with the correct application and the matching ControlST software version, given its network identity, and, where enabled, allowed to take its downloaded baseload and firmware. Planning that step in advance, ideally with your as-built ToolboxST project on hand, is what turns a spare into a fast recovery. It is also why a controller that looks dead sometimes proves to be a configuration issue rather than failed hardware.

Details that speed up your quote

Send the full part number and suffix (IS220UCSAH1AC), the revision, a label photo, the turbine or plant application, the Mark VIe control and ControlST version if known, whether you run simplex or TMR, quantity and timeline.

Request a quote for a spare controller

This IS220UCSAH1AC is new surplus in the factory package. Request a Quote and we reply within 24 hours, ship worldwide DDP and accept purchase orders. Related controllers and boards are in our GE Mark VI IS200 Boards collection.

General Information about the Product
Part Number	IS220UCSAH1A Mark VI IS220
Description	GE General Electric IS220UCSAH1A IS220UCSAH1AC Processor Module Mark VI NEW
Condition	newSurplusFactoryPackage Original Factory Packaged. With 1 Year Warranty.