DS200RTBAG4AHC | GE DS200 Quad Bank Mixed Output In Stock

Description

Product Core Brief

• Model: DS200RTBAG4AHC
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: Ultra-high-density quad-bank hybrid relay board
• Product Type: Hybrid Relay Board (64 channels, 4 banks)
• Key Specs: 48 mechanical (16 @ 10A + 32 @ 5A) + 16 SSR (2A fast) | 4 isolated banks
• Condition: New Original.

Product Introduction

The DS200RTBAG4AHC is an ultra-high-density hybrid relay output termination board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides 64 outputs across four isolated banks with different relay technologies: Bank A (16 mechanical relays, 10 A high current), Bank B (16 mechanical, 5 A), Bank C (16 mechanical, 5 A), and Bank D (16 solid state relays, 2 A, <100 µs fast switching).

The “4AHC” suffix indicates a quad-bank hybrid configuration—the highest channel count and most versatile RTBA board ever produced for Mark V. It is designed for large turbine control systems requiring a mix of load types: heavy motor starters (Bank A, 10 A), general purpose solenoid and indicator control (Banks B & C, 5 A each), and high-speed PWM control or silent switching (Bank D, SSR). All on one board, one rack slot, with four-way bank-to-bank isolation. Maximum density. Maximum flexibility.

Key Technical Specifications

Shared Parameters (All Banks)

Key Selling Points & Differentiators

• 64 outputs, four technologies, one slot – Bank A: 10 A mechanical for heavy loads. Banks B & C: 5 A mechanical for general purpose (32 relays total). Bank D: 2 A SSR for high-speed/silent switching. Replaces up to four separate boards. Saves three rack slots.
• Bank A (10 A high power, fixed terminals) – Switch motor starters (1 HP), large solenoids, pump contactors. Fixed screw terminals rated for 10 AWG. Bifurcated silver-tin oxide contacts. Red + green LEDs. External coil power option available. Thermal pad required for loads above 5 A average.
• Banks B & C (5 A general purpose, removable terminals) – 32 relays total for smaller solenoids, relay coils, indicator lights. Removable screw terminal blocks for easy rewiring. Standard silver alloy contacts. Red + green LEDs. Run from backplane power (480 mA total for both banks).
• Bank D (2 A SSR, fast switching, silent) – PWM control of heaters, high-speed valve arrays, lamp testing, LED panels. Zero-crossing AC or random-turn-on DC (field selectable). Removable pluggable terminal blocks. Unlimited mechanical life. Only 5 mA input per channel.
• Quad bank-to-bank isolation at 2500 VAC – Banks A, B, C, and D fully isolated. Connect Bank A to 240 VAC pumps, Bank B to 120 VAC solenoids, Bank C to 48 VDC battery circuits, Bank D to 24 VDC fast valves on the same board.
• Mixed terminal types optimized per bank – Bank A: fixed screw (high current). Banks B & C: removable screw (convenience). Bank D: removable pluggable (fast rewiring for high-cycle applications).
• QC includes separate load tests per bank type – Bank A: 10 A resistive, 24 hours. Banks B & C: 5 A resistive, 10,000 cycles each (sample). Bank D: 1 kHz cycling, 1,000,000 cycles. All six bank-to-bank isolation combinations at 3000 VAC.
• 2-year warranty – Covers all 64 outputs across all four technologies, external coil power circuit (Bank A), and any manufacturing defect.

Frequently Asked Questions (FAQ)

Q: What’s the difference between RTBAG4A (all mechanical 5 A), RTBAG4AEB (all mechanical 10 A), and RTBAG4AHC (hybrid)?

Choose 4AHC when you need a mix of heavy loads (Bank A), general purpose (Banks B & C), and fast switching (Bank D) in one board.

Q: Can I replace four separate RTBA boards (one 10 A, two 5 A, one SSR) with one 4AHC without changing my Mark V configuration?
A: Partially. The 4AHC has sequential numbering: relays 1–16 (Bank A, 10 A), 17–32 (Bank B, 5 A), 33–48 (Bank C, 5 A), channels 49–64 (Bank D, SSR). Your existing four boards likely had overlapping numbers (each had relays 1–16). You will need to:

1. Remap Mark V output bits to new sequential numbering (e.g., old Board 2 relay 1 → new relay 17; old Board 3 relay 1 → new relay 33; old Board 4 relay 1 → new channel 49).
2. Re-land all 192 field wires onto the 4AHC terminals (Bank A fixed, Banks B/C removable screw, Bank D removable pluggable).
3. Reprogram logic for Bank D (Form A, no NC contact).
   Allow 14–20 hours for conversion. We provide a conversion worksheet.

Q: How do I use the external coil power option for Bank A?
A: Bank A (10 A mechanical relays) draws 480 mA when all 16 relays are energized. If your backplane 24 VDC is limited, move the jumper on Bank A to “EXT” position. Connect an external 24 VDC supply (1 A minimum) to the 2-position terminal block labeled “EXT 24V+ / EXT 24V-“. Banks B, C, and D run from backplane power only (no external option). The Mark V output module still controls Bank A relays via opto-isolation.

Q: Can Bank D (SSR) be configured for AC or DC?
A: Yes. Bank D has four groups of 4 channels (49–52, 53–56, 57–60, 61–64). Each group has a 2-position jumper. For AC (zero-crossing), install the jumper. For DC (random turn-on), remove the jumper. Default from factory: Groups 1 & 2 = AC, Groups 3 & 4 = DC. Change jumpers before installing the board.

Q: What are the thermal limitations for each bank?
A: Bank A (10 A): requires panel mounting (thermal pad) AND forced air cooling for 10 A on all 16 relays. Without forced air, limit to 5 A. Banks B & C (5 A): OK with panel mounting for 5 A on all 16 relays; DIN rail OK for 3 A average. Bank D (SSR): thermal limit 16 A total (1 A average per channel) with panel mounting. Derating chart included.

Q: The board has three different terminal types. How do I replace damaged ones?
A: Bank A (fixed screw): cannot replace in field—return for repair ($65 + shipping). Bank B & C (removable screw blocks): squeeze latches, pull up. Spare blocks included. Bank D (removable pluggable blocks): same as Banks B & C. We sell spare blocks for Banks B/C (part ACC-TRM-RTB) and Bank D (part ACC-TRM-SSR).

Q: What is the green LED function on Banks A, B, and C?
A: Red LED = coil energized (command). Green LED = contact closed AND field voltage present on Common (C) terminal. Sense voltage: 12–250 VAC or 12–125 VDC. If you do not want green LED, leave C terminal unconnected. Bank D (SSR) has only green LED (input signal present).

Q: Can Bank A switch 240 VAC at 10 A continuously?
A: Yes, resistive loads (heaters). For inductive loads (motors) at 240 VAC, derate to 5 A. A 1 HP motor draws 4 A running but 25 A inrush—will weld contacts. Use Bank A to control an external contactor for motor loads.

Q: What QC tests are specific to the hybrid 4AHC revision?
A: Sixteen tests, separated by bank:
Bank A (10 A Mech): Coil resistance 800Ω; contact resistance <30 mΩ at 1 A; load test 10 A, 24 hours; external coil power test.
Banks B & C (5 A Mech): Coil resistance 1.6 kΩ; contact resistance <50 mΩ; load test 5 A, 10,000 cycles (sample).
Bank D (SSR): Input current 5 mA; turn-on/off <100 µs (DC); on-state drop <1.5 VAC; high-cycle test 1,000,000 cycles.
All Banks: Bank-to-bank isolation (6 combinations) at 3000 VAC; input-to-output isolation; operate test (500 cycles each); thermal imaging; LED tests; ribbon cable tests (4 cables).

Q: What shipping protection for this large heavy board?
A: The 4AHC weighs 3.6 kg (7.9 lbs), measures 480 mm x 250 mm. Anti-static bag, custom ESD foam cradle with separate cutouts for Bank A fixed terminals (48 positions), Banks B & C removable blocks (96 positions), Bank D removable blocks (32 positions). Double-wall box with “HEAVY,” “FRAGILE,” “EXTRA WIDE,” “DO NOT STACK” labels. Shock indicator. Each board ships individually. Thermal pad kit in separate bag. Hybrid configuration guide (12 pages) included.

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