IC3600SSVA1F: GE Speedtronic Servo Control Card
The IC3600SSVA1F is a servo control card from GE's Mark I / Mark II Speedtronic (IC3600) system, supplied here clean, tested and used. In the IC3600 architecture the servo cards are the link between the turbine's control references and the hydraulic servo valves that actually move fuel, steam or water actuators and the SSVA is the servo control member of that group.
What the Servo Control Card Does in the Mark I-II Hydraulic Loop
A servo control card's job is to turn a control reference into a precise actuator position and then hold it there using feedback. Reference material describes the SSVA as producing control signals that regulate the position of the driven device, with a feedback path (a position sensor or LVDT-type feedback) that lets the loop continuously correct itself. In one documented Speedtronic application water injection for NOx control the servo path sums a flow reference (FLO REF) with flow feedback (FFB) to form a position reference (Pos REF) that drives the water servo valve, in the same way the fuel servo valves are driven through the SSVF and SSVG cards. The exact loop the SSVA serves depends on how your panel is configured, so treat that as an illustration of the card's role rather than a fixed wiring assignment.
Servo Faults That Mimic a Bad SSVA Card
Servo problems are notorious for pointing at the drive electronics when the real fault is in the hydraulics or the feedback path. Before replacing an SSVA, isolate the loop:
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Hydraulic supply. Confirm servo supply pressure is normal; low or dirty hydraulics make a healthy card look like it is failing to position the valve.
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Feedback element. Check the position sensor / LVDT and its wiring. A loss of feedback can drive the loop to one extreme, which looks like a card fault but is not.
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Command in. Verify the reference or command signal actually arriving at the card.
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Null and bias. A drifted null or bias adjustment can offset the valve without any component having failed.
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Supplies and connector. Confirm the DC supplies and reseat and clean the edge connector before condemning the board.
If hydraulics, feedback, command and supplies all check out and the valve still will not follow, the servo card becomes the likely cause.
Reading the SSVA Part Number: Why the Fourth Letter Matters
Within the IC3600SSV servo group, the fourth letter defines the function, and it is not interchangeable: SSVA is a servo control card, SSVB a servo pressure control card, SSVG a servo valve drive card, and SSVF a servo valve feedback card. In IC3600SSVA1F, the trailing "1F" is the variant and revision of the SSVA. Always match the letter and the trailing characters to your card an SSVG is not an SSVA. Our GE Speedtronic Part Number Decoder explains the layout.
Companion Servo Cards in the IC3600 Family
The SSVA works alongside the other servo-series boards the SSVF feedback card, the SSVG valve-drive card, and related SSV variants plus the analog reference and power-supply cards in the same nest. You can see matching Mark I-II hardware in our GE Mark I-II IC3600 Cards collection and the full GE Speedtronic Turbine Control Boards range.
What to Include in Your SSVA1F Quote Request
To match the correct card, send the full part number (IC3600SSVA1F), the revision on the label, a photo of the board, your turbine model and Speedtronic generation, the servo function it serves if you know it, the quantity, and your urgency.
Request a Quote for the IC3600SSVA1F
We supply the IC3600SSVA1F worldwide on DDP terms and accept purchase orders. Send your details through Request a Quote and we will respond within 24 hours with availability and condition options.
General Information about the Product |
Part Number |
IC3600SSVA1F Mark I-II IC3600 |
Description |
IC3600SSVA1F By GE Speedtronic IC3600SSVA Servo Control Card |
Condition |
used Clean and Tested With 1 Year Warranty. |
