IS220UCSAH1A: a new-surplus Mark VIe turbine controller
Offered as new surplus in the factory package with a one-year warranty, this IS220UCSAH1A is a GE Speedtronic Mark VIe controller, the module that runs the control application and ties together the distributed I/O for a turbine or its auxiliary systems. It is a self-contained panel-mounted computer that communicates with the I/O packs over IONet and with the operator and engineering stations over the plant network.
What the UCSA does and how it is built
The controller runs the QNX real-time operating system on a Freescale MPC8349 PowerQUICC II Pro processor at 667 MHz and stores its application and configuration on compact flash. Its faceplate provides six Ethernet jack connectors, a USB port and a column of status LEDs (Power, Boot, Online, Flash, DC and Diag, plus Link/Act per port). The design is fanless and rated for hazardous Class I, Division 2 locations, which suits it to turbine enclosures; it is not, however, certified to IEC 61508, so it is not intended for SIL-rated safety loops. In service it draws low-voltage DC control power and dissipates only a modest amount of heat, which is why no cooling fan is required.
Confirm the failure is the controller, not the system around it
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Network first: an HMI showing the controller offline usually points to IONet or plant-network cabling, a switch or a port before it points to the module.
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Compact flash and version match: a failed CF card or a ControlST or firmware mismatch can prevent boot or online status on good hardware.
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Power and DC LED: verify the control-power feed; a marginal supply mimics a dead controller.
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Where the symptom lives: lost I/O points mean an I/O pack or an IONet branch; a controller fault takes the whole application down.
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Diagnostics before hardware: the Diag LED and the ToolboxST log usually identify the true fault.
Part number and revision: getting the match right
IS220UCSA is the controller, H1A is the hardware group, and any trailing letter on the label is the hardware revision. Match the group and revision to your installed controller, and confirm the loaded application and ControlST version separately, since those govern behavior as much as the hardware does. The GE Speedtronic Part Number Decoder explains the format, and Mark V vs Mark VI: DS200 to IS200 traces how the Mark VIe controller generation evolved from earlier Speedtronic systems.
Where the UCSA fits among Mark VIe controllers
The UCSA is a capable, cost-effective controller aimed at balance-of-plant control and many turbine retrofits. By design it does not carry the processing headroom needed for some advanced model-based control applications, which were addressed by higher-performance controllers in the same Mark VIe family. Knowing which duty your controller performs helps confirm that the UCSA is the correct module for the position you are filling.
What to send with a controller quote
Please include the full part number and any suffix or revision on the label, a label photo, the application it runs, the Mark VIe control and ControlST version if known, simplex or TMR, quantity and how soon you need it.
Quote this Mark VIe controller
This IS220UCSAH1A is new surplus in the factory package. Request a Quote and we respond within 24 hours, ship worldwide DDP and accept purchase orders. Explore related controllers and boards in our GE Speedtronic Turbine Control Boards collection.
General Information about the Product |
Part Number |
IS220UCSAH1A Mark VI IS220 |
Description |
IS220UCSAH1A Mark VIe Controller by GE New Surplus Factory Package |
Condition |
newSurplusFactoryPackage New Surplus Factory Package. With 1 Year Warranty |
