DS200TCTSG2ACC: A Group 2 Mark V Simplex Trip Board

The DS200TCTSG2ACC is the Group 2 version of GE's SPEEDTRONIC Mark V Simplex Trip Board (function code TCTS). It performs the same trip-relay role as its Group 1 sibling but carries GE's G2 grouping, so it is important to match the group as well as the function when you order. This unit is supplied used, cleaned and tested, with warranty.

The TCTS family is the relay-output stage of the Mark V trip system: the plug-in relays on the card provide the contacts wired into the turbine's emergency-shutdown circuit. Everything about specifying, diagnosing and handling one of these boards starts with getting the exact revision right.

Why the Group Number Matters When You Order

In GE's DS200 scheme the digit after the "G" (G1, G2, G3) identifies a functional group, and groups are not guaranteed to be drop-in equivalents. A panel built around a G2 board should, as a rule, be maintained with a G2 board unless GE documentation for your specific unit says otherwise. The safest approach is to read the full string on the installed card — here DS200TCTSG2ACC — match it exactly, and confirm against your system elementary drawings. If you are cross-checking several boards, the GE Speedtronic Part Number Decoder lays out what each field means, including how the two trailing letters (here CC) capture the board's artwork/hardware revision.

Before You Replace It: A Field Checklist

Trip boards get changed more often than they actually fail, because the whole shutdown chain produces the same symptom. Confirm the card is genuinely at fault before you swap it:

• Confirm the command. On the <I> operator interface, check whether the <R>/<S>/<T> control cores or the protection core <P> actually commanded the trip. A real command means the board worked correctly.
• Isolate the relay. The relays are individually pluggable, so a single failed device can look like a dead board. Reseat or change the one relay first.
• Test the field side. Trip solenoids, dump valves and interposing wiring are frequent offenders — check continuity and the power feeding them.
• Inspect the interfaces. Reseat the JDR/JDS/JDT and JN/JM ribbons and examine the relay terminal board the trip contacts land on.

Keep this at the identification-and-elimination level. Any actual trip testing must follow the GE manual and your plant's written procedure, not a web page.

On-Board Hardware and Safe Handling

Like the rest of the TCTS family, the G2 board carries twelve plug-in relays (K1–K12) in quick-connect sockets, three 16-pin connectors (JDR, JDS, JDT), two 12-pin connectors (JN, JM) and four 50 VDC capacitors. Those capacitors hold charge after shutdown, so power down the drive and wait roughly 30 seconds before handling the board. Treat it as static-sensitive: leave it in its protective bag until you are ready to install, and check the model number on the edge label against your order.

Trip-Path Neighbours and the Move to Mark VI

Other cards you may see in the same protection area include the DS200TCTG trip board and DS200TCTE trip module, together with the relay terminal boards that carry the field connections. When a plant eventually moves off Mark V, the successor platform is Mark VI with its IS200 boards; Mark V vs Mark VI: DS200 to IS200 explains how the trip and I/O roles were re-hosted. You can also see everything in stock at GE Mark V DS200 Boards.

Request Pricing and Lead Time

For an accurate quote, send the full part number with suffix (DS200TCTSG2ACC), a photo of the board-edge revision label, your turbine model, the Mark V configuration (Simplex or TMR), the quantity, and your urgency. We ship worldwide DDP, accept purchase orders and respond within 24 hours. Click Request a Quote to begin, or browse the broader range at GE Speedtronic Turbine Control Boards.