New-Surplus DS200TCDAH1BJE: What You're Getting

This listing is a new-surplus, factory-packaged DS200TCDAH1BJE – an H1-group TCDA, the Digital I/O board used across GE's Speedtronic Mark V turbine control system. The TCDA's job is to carry field contact signals (limit switches, permissives, status points) into the control logic and to drive relay outputs to contactors, solenoids, and annunciator circuits. Each terminal's function is assigned in software, so the physical card doesn't change from site to site – only the configuration does.

Mechanically, the TCDA is installed in one of the Mark V's control cores: <R>, <S>, or <T> in a TMR panel, or the single core in a Simplex panel. TCDA cards are also documented as part of the <C> communication core card set on many systems. In the rack it partners with a relay-output board (TCRA) and I/O cards such as TCQA, TCQE, and TCEA on the panel's IONET.

Build Your Diagnostic Checklist Now, Not During the Outage

Because this unit is likely headed for a spares shelf rather than an immediate swap, it's worth knowing in advance what actually causes TCDA-type alarms – so that if one shows up later, you don't reach for this card before ruling out the more common causes. Documented Mark V field cases show these non-card explanations for continuous I/O state cycling or repeated card-lost diagnostics:

• IONET termination resistors reversed between the TCDA (should be IN) and a TCEA card (should be OUT).
• A weak or noisy TCPS power supply feeding the core, rather than the TCDA itself.
• Transients on the DC control bus, from a battery charger or de-energizing unsuppressed DC coils nearby.
• An outstanding PROM/firmware revision, since GE has resolved some IONET communication problems this way rather than through a hardware swap.
• A loose card or corroded connector pin.

Also remember that the TCDA and its relay partner, TCRA, fail differently: TCRA carries electromechanical relays that wear with switching cycles, while the TCDA's solid-state logic doesn't share that mechanism, so a relay output that won't energize is more often a TCRA issue. There's no fixed service life for a TCDA – many run eight-plus years without trouble, and general Mark V card experience puts mean time between failures in the low hundreds of thousands of hours, with cabinet heat, humidity, dust, and voltage transients being the more common real drivers of an eventual failure.

What H1BJE Means

DS200 is the Mark V-era series prefix, TCDA is the Digital I/O acronym, H1 is the product grouping, and BJE is this unit's specific functional and artwork revision combination. H1 and G1 TCDA cards are different hardware groupings under the same functional name, so confirm which one your panel actually uses before assuming interchangeability, and always match the full suffix rather than the base part number.

Related Boards and Longer-Term Migration

TCDA is typically discussed alongside TCRA, TCQA, TCQE, TCEA, STCA, and UCPB. If your site is evaluating a platform change, GE's Mark VI system replaced the DS200 series with IS200-series boards and a different I/O architecture – our Mark V vs Mark VI: DS200 to IS200 guide covers the general mapping. For how GE structures its Speedtronic part numbers, see the GE Speedtronic Part Number Decoder, and for TCDA's place among the DS200 board family, see GE Mark V DS200 Boards Explained.

What to Send for a Quote

• The complete part number and suffix, e.g., DS200TCDAH1BJE
• A label photo from your existing card, for comparison
• Turbine model and Mark V configuration (Simplex or TMR)
• Quantity
• Whether this is for stock or an active outage

Request a Quote

This DS200TCDAH1BJE is new-surplus, factory-packaged stock with a 1-year warranty (see below). Pricing isn't published online since Mark V board quotes depend on exact revision availability – submit a Request a Quote and expect a reply within 24 hours. We ship worldwide DDP, accept purchase orders, and support both spares programs and urgent turbine-down orders.

General Information about the Product
Part Number	DS200TCDAH1B Mark V DS200
Description	GE DS200TCDAH1B DS200TCDAH1BJE Digital I/O Board Mark V NEW
Condition	newSurplusFactoryPackage Original Factory Packaged. With 1 Year Warranty.