Product Core Brief
- Model: DS200RTBAG2AFB
- Brand: GE (General Electric / GE Speedtronic family)
- Series: Mark V DS200
- Core Function: Relay terminal board that adds ten field relays to GE Mark V drive and exciter cabinets, supporting remote or LAN-driven relay control.
- Product Type: Relay Terminal Board (RTBA)
- Key Specs: 10 onboard relays (K20–K29) | 7 × DPDT relays (K20–K26), 2 C-type contacts, 10 A each | 3 × 4PDT relays (K27–K29), 4 C-type contacts, 1 A each | 110 V DC relay coils | 130 VAC MOV protection | CPH/CPN plug-in power connectors | LAN or remote relay drive capability
- Condition: New Surplus / Refurbished (legacy/discontinued board; confirm revision, relay map, and compatible cabinet)
Product Introduction
The GE DS200RTBAG2AFB is a Relay Terminal Board (RTBA) from the GE Speedtronic Mark V DS200 series. It is designed to expand relay output capability inside GE Mark V drive and exciter cabinets by providing ten additional relay points that can be driven remotely or through LAN I/O terminal boards.
The board carries two relay types. Relays K20 through K26 are DPDT relays, each with two C-type contacts rated at 10 A. Relays K27 through K29 are 4PDT relays, each with four C-type contacts rated at 1 A. All ten relay points are protected by a 130 VAC metal oxide varistor (MOV), and each relay uses an internal 110 V DC coil.
The board includes two plug-in connectors on its surface: CPH for the positive side of the plug-in circuit control power, and CPN for the negative side. Because it is a discontinued Mark V component, replacement should follow the cabinet wiring documentation, verified relay configuration, and compatible LAN I/O assignment.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Relay Terminal Board (RTBA) |
| Brand | GE (Speedtronic Mark V) |
| Model | |
| Series | Mark V DS200 |
| Typical Application | Drive and exciter cabinet relay expansion |
| Relay Count | 10 (K20–K29) |
| Relay Types | 7 × DPDT (K20–K26), 3 × 4PDT (K27–K29) |
| Contact Ratings | DPDT: 10 A per C-type contact; 4PDT: 1 A per C-type contact |
| Relay Coil | 110 V DC |
| Protection | 130 VAC MOV on all ten relay points |
| Connectors | CPH (positive), CPN (negative) |
| Drive Method | LAN I/O terminal board or remote user drive |
| Status | Legacy / Discontinued |
Exact relay map, cabinet slot, connector pinout, and compatible LAN I/O board must be confirmed from the board label and OEM manual.
Quality Control Process (DYNAMIC GENERATION)
- Part-number verification: Confirm DS200RTBAG2AFB and AFB revision on the board label.
- Visual inspection: Check relay sockets, CPH/CPN connectors, MOV components, and PCB traces for corrosion, burns, or mechanical damage.
- Relay integrity check: Verify relays K20–K29 seat correctly and show no signs of coil damage or contact pitting.
- Connector inspection: Inspect CPH and CPN plug-in connectors for bent pins, oxidation, or poor contact.
- Relay drive verification: Confirm the board receives correct drive signals from the LAN I/O terminal board or remote control source.
- MOV protection check: Verify the 130 VAC MOV is intact and not cracked, discolored, or open.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ Do not confuse RTBA with PCCA, LDCC, or DCFB boards. DS200RTBAG2AFB is a relay terminal board, not a power connection card, drive control board, or DC feedback board.
❗ Verify the relay map before removal. K20–K26 are DPDT (10 A), and K27–K29 are 4PDT (1 A); incorrect substitution can overload lower-rated contacts.
❗ Confirm coil voltage compatibility. The relays use 110 V DC coils; mismatched control power can prevent proper operation.
❗ Check CPH/CPN power polarity. Incorrect connection of the plug-in circuit control power can cause relay drive faults.
❗ Verify LAN or remote drive source. The relays are typically driven by a LAN I/O terminal board or remote user signal; missing drive signals will prevent relay operation.
❗ Treat as legacy hardware. Mark V components are discontinued; long-term sites should evaluate migration to Mark VI/Mark VIe or GE Vernova equivalents.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| GE | Same board | Direct | Match revision, relay map, and cabinet slot. |
| GE | Other RTBA variants (G1/G3/G5) | Needs Verification | Confirm relay count, coil voltage, connector layout, and drive method. |
| GE | GE Mark VI / Mark VIe relay terminal boards | Migration | Newer platform; requires full engineering review. |
| GE | GE Vernova drive/exciter relay upgrades | Migration | Evaluate relay map, LAN I/O assignment, and cabinet compatibility. |
Benchmarks:
- Relay terminal board for GE Speedtronic Mark V drive and exciter cabinets.
- Adds ten field relays: 7 × DPDT (10 A) and 3 × 4PDT (1 A).
- Relays use 110 V DC coils and are protected by 130 VAC MOVs.
- Supports LAN-driven or remote relay control via CPH/CPN plug-in power connectors.
- Legacy/discontinued board; confirm exact revision and cabinet configuration before procurement.
