DS200SLCCG1ABB: The Mark V's LAN Communication Card

DS200SLCCG1ABB is a G1-group SLCC, the card GE built to handle LAN-level communication inside a Speedtronic Mark V control panel (and inside EX2000 excitation cabinets using the same architecture). The SLCC processes and filters incoming LAN signals through isolated and non-isolated circuits, with a LAN Control Processor (LCP, U1) as its core component, LCP software held in two replaceable EPROMs (U6/U7), and dedicated RAM at U8/U9. A dual-ported RAM at U5 links the LCP to the drive control processor on the SDCC card via connector 3PL, and an attachable alphanumeric keypad/display module supports diagnostics and fault-code readout directly from the card.

The SLCC sits in the Mark V's <C> (communication) core and connects to the NTB/3TB, SDCC, TCCB, and DCFB boards via a 2PL connector. Since it's G1-group, it includes DLAN and ARCNET network adaptation circuitry – hardware that GE later removed entirely from the G4-group SLCC. The suffix here signals a real hardware distinction, not simply a batch number.

Rule This Out Before You Replace an SLCC

Few Mark V symptoms get misattributed to a single card as often as SLCC-type communication faults. A documented field case involved an operator interface that quit updating live data; the site replaced every card in the <C> core – SLCC, TCCA, SDCC, TCDA – and the TCPS power supply, and the problem stayed. The path to an actual fix ran through:

• Checking power supply voltages at the <R> and <C> test points against the Mark V Maintenance Manual (GEH-5980) limits
• Using the BOI (backup operator interface) to see what <R> is actually reporting, since it talks to <R> directly without going through <C>
• Inspecting connectors for corrosion and cables for a broken conductor before assuming a card is bad
• Looking at the TCQC card in <R> and the ARCPL cable linking it to the <C> core's SLCC – a fault in either place mimics a bad SLCC precisely

Also worth knowing: a processor core doesn't reach I/O status A7 until every card in it individually hits A6. If the <C> core on your panel is stuck, find out which specific card is holding it back before assuming it has to be the SLCC.

What ABB Tells You

DS200 is the Mark V-era series prefix, SLCC is the LAN Communication Card acronym, G1 is this board's product grouping (DLAN and ARCNET circuitry included), and ABB is its specific functional and artwork revision combination. Because SLCC groups map to actual hardware differences, confirm your exact group and full suffix before assuming a replacement will be compatible.

Related Boards and Newer Platforms

The SLCC shares the <C> core with TCCA, SDCC, IOMA, and TCDA, and connects to <R> through the TCQC card. If a platform migration is on the horizon for your site, GE's Mark VI system replaced the DS200 series with IS200-series boards and a different communications architecture; see our Mark V vs Mark VI: DS200 to IS200 guide. For GE's Speedtronic part-numbering structure, see the GE Speedtronic Part Number Decoder, and for how SLCC compares with the rest of the DS200 family, see GE Mark V DS200 Boards Explained.

What to Send With Your Quote Request

• Complete part number and suffix, e.g., DS200SLCCG1ABB
• A photo of the label
• Turbine model and whether the system is Mark V or EX2000
• Quantity needed
• Urgency – planned outage or active fault

Request a Quote

This DS200SLCCG1ABB is offered used, clean and tested, with a 1-year warranty (see below). Pricing isn't published online since Mark V board quotes depend on exact revision match and current stock – submit a Request a Quote and expect a reply 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	DS200SLCCG1A Mark V DS200
Description	GE DS200SLCCG1A DS200SLCCG1ABB LAN Communication Card Mark V
Condition	used Clean and Tested. With 1 Year Warranty.