DS200SLCCG4ACC / DS200STBAG1AAA: Please Confirm the Exact Label

This listing carries two GE reference numbers – DS200SLCCG4ACC and DS200STBAG1AAA – and our own product data shows the part number as DS200STBAG1A. Because SLCC (LAN Communication Card) and STBA (a Speedtronic terminal board) are different board types in GE's Mark V DS200 numbering, we want to be upfront rather than guess: if you are sourcing against this listing, please send us a photo of the physical label on your existing card before ordering, so we can confirm which board this unit actually is and that it matches your requirement exactly. We would rather confirm than have you receive the wrong board.

What an SLCC Does, in General

If this unit is in fact an SLCC, it belongs to the LAN Communication Card family GE uses throughout the Speedtronic Mark V turbine control system (and EX2000 excitation cabinets built on the same architecture). The SLCC processes and filters incoming LAN communication signals through isolated and non-isolated circuits, built around a LAN Control Processor (LCP) with software held in replaceable EPROM memory, and it sits in the Mark V's <C> (communication) core, connecting to the NTB/3TB, SDCC, TCCB, and DCFB boards. A G4-group SLCC, specifically, is confirmed to exclude the DLAN and ARCNET network adaptation circuitry that earlier G1/G2-group SLCC cards included.

Diagnose Before You Buy, Regardless of Which Board This Is

If your fault is in the <C> communication core, it's worth knowing that SLCC-type symptoms – a frozen operator display, data that stops updating – are among the most commonly misdiagnosed faults on a Mark V panel. In one documented case, an operator interface stopped updating live data, and the site replaced every card in the <C> core (SLCC, TCCA, SDCC, TCDA) plus the TCPS power supply, and the fault remained. What actually helped:

• Power supply voltages at the <R> and <C> test points, checked against the Mark V Maintenance Manual (GEH-5980) limits
• The BOI (backup operator interface), which talks to <R> directly without going through <C>
• Connector corrosion or a broken cable conductor, checked ahead of any card swap
• The TCQC card in <R> and the ARCPL cable to the <C> core's SLCC – a fault here mimics a bad SLCC precisely

If instead your issue is with a terminal board (STBA-type), the first things to check are always the field wiring and terminations themselves, and whether the fault follows the terminal board or stays with the field device when you swap connections – terminal boards are passive interconnect hardware, so a repeat fault after replacement almost always points back to the field wiring, not the board.

Reading These Part Numbers

DS200 is the Mark V-era board series prefix in both cases. SLCC is the LAN Communication Card acronym, with G4 as the product group and ACC as the revision combination. STBA is a Speedtronic terminal board acronym, with G1 as its group and AAA as its revision combination. These are two distinct functional families under the same DS200 numbering convention – which is exactly why confirming the physical label matters here more than on almost any other listing on our site.

Related Boards and Further Reading

For how GE's Speedtronic part numbers are built – including how to tell functional acronyms like SLCC and STBA apart at a glance – see our GE Speedtronic Part Number Decoder. For the broader DS200 board family, see GE Mark V DS200 Boards Explained, and if you're evaluating a platform migration, see our Mark V vs Mark VI: DS200 to IS200 guide.

What to Send With Your Quote Request

• A photo of the physical label on the card you are replacing – essential on this listing given the two reference numbers involved
• The complete part number and suffix as printed
• Turbine model and Mark V configuration
• Quantity needed
• Urgency – planned outage or active fault

Request a Quote

This unit is offered used, clean and tested, with a 1-year warranty (see below). Submit a Request a Quote with a label photo and our team will confirm the exact match and respond within 24 hours. We ship worldwide DDP, accept purchase orders, and support both planned outages and urgent turbine-down orders.

General Information about the Product
Part Number	DS200STBAG1A Mark V DS200
Description	General Electric DS200SLCCG4ACC DS200STBAG1AAA Multi Input Turbine Control Board Mark V
Condition	used Clean and Tested. With 1 Year Warranty.