DS200RTBAG3AFB | GE DS200 Triple Bank SSR Output In Stock

Description

Product Core Brief

• Model: DS200RTBAG3AFB
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: Triple-bank solid state relay board with 48 high-speed outputs
• Product Type: SSR Output Board (48 channels, 3 banks)
• Key Specs: 48 SSRs | 2 A per channel | <100 µs switching | 3 isolated banks
• Condition: New Original.

Product Introduction

The DS200RTBAG3AFB is a high-density solid state relay output termination board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides 48 independent SSR outputs arranged as three isolated banks of 16 channels each—combining the fast switching of SSRs with the highest channel density in the RTBA family.

The “3AFB” suffix indicates a triple-bank solid state board. This is essentially three RTBAG1AFB boards integrated onto a single PCB with bank-to-bank isolation. It is designed for applications requiring high cycle rates across 48 outputs: PWM control of multiple heater banks (48 zones), high-speed valve arrays, lamp testing fixtures, LED indicator panels, or any application where 48 channels of silent, bounce-free, fast switching are needed in a single rack slot.

Key Technical Specifications

Shared Parameters (All Banks)

Key Selling Points & Differentiators

• 48 SSRs in a single slot – Three independent banks of 16 channels each. Replaces three RTBAG1AFB boards and saves two rack slots. Highest density solid state output board for Mark V.
• Independent AC/DC configuration per bank – Configure Bank A for zero-crossing AC switching (low EMI), Bank B for random-turn-on DC switching (fast response), Bank C for AC or DC as needed. Jumpers selectable per bank.
• <100 µs switching time (DC mode) on all 48 channels – Control high-speed injectors, fast-acting valves, or PWM heater banks with 1 kHz update rates across 48 zones. No mechanical bounce, no contact wear, silent operation.
• Very low backplane current draw – 5 mA per channel (240 mA total for 48 channels) versus 1440 mA on electromechanical RTBAG3AEB. Frees up backplane capacity dramatically. Can run on the smallest Mark V power supply even with all outputs active.
• Per-bank thermal protection with auto-reset – Each bank has independent temperature monitoring. At 90°C, the bank disables outputs (fault LED lights). At 75°C, the bank re-enables automatically. Protects SSRs without shutting down the entire board.
• Triple bank-to-bank isolation at 2500 VAC – Connect Bank A to 120 VAC motor starters, Bank B to 24 VDC solenoid valves, Bank C to 240 VAC heaters on the same board. No ground loops.
• Removable terminal blocks, color-coded per bank – Bank A (gray), Bank B (black), Bank C (blue). Replace a damaged block without unwiring the entire board. 96 total terminals (2 per channel).
• QC includes 1,000,000 cycle test on all 48 channels – Every channel cycled at 1 kHz (DC mode) for 1,000 seconds. Zero misfires. Bank-to-bank isolation verified at 3000 VAC.
• 2-year warranty – Covers output short circuit, failure to turn on/off, thermal protection malfunction, or any manufacturing defect on any bank.

Frequently Asked Questions (FAQ)

Q: What’s the difference between RTBAG3A (mechanical 5 A), RTBAG3AEB (mechanical 10 A), RTBAG3AFB (SSR 2 A), and RTBAG3ABB (mechanical high rel)?

Choose AFB for high-speed switching (PWM, >10 Hz), high cycle rates (>1000 per day), silent operation, or low backplane current. Choose mechanical for loads above 2 A or when NC contacts are required (SSRs are SPST-NO only).

Q: Can I replace a mechanical RTBAG3A with the AFB without changing my Mark V configuration?
A: Yes and no. Pinout is identical—plug-and-play electrically. However:

1. The AFB is Form A (SPST-NO, 2 terminals per channel). Mechanical RTBAG3A is Form C (SPDT, 3 terminals: C, NO, NC). If your application uses the NC contact, the AFB will not work.
2. The AFB has no contact rating for inrush (motors, incandescent lamps). For loads above 2 A or with high inrush, keep mechanical.
3. The AFB requires panel mounting for loads above 0.5 A per channel average. Mechanical can be DIN rail mounted at full load.
4. The AFB has no per-channel green LED (only green for input signal). Mechanical has red+green on some variants.

Q: How do I configure each bank for AC or DC?
A: Each bank has a 4-position jumper block labeled “MODE”. For AC (zero-crossing), install jumpers across pins 1–2 and 3–4. For DC (random turn-on), remove both jumpers. Default from factory: Bank A = AC, Bank B = DC, Bank C = AC. Change jumpers before installing the board. Do not change jumpers with power applied.

Q: What is the thermal limitation for 48 channels?
A: The board is thermally limited to 16 A total per bank (16 channels x 1 A average) with proper panel mounting. At 2 A per channel (32 A total per bank), the board would exceed 90°C in under 10 minutes. Derating:

• Panel mounting (metal surface, thermal pad): 1 A per channel continuous maximum (16 A per bank).
• Panel mounting + forced air (200 LFM): 1.5 A per channel maximum (24 A per bank).
• DIN rail mounting (no heatsink): 0.3 A per channel maximum (4.8 A per bank).
  Thermal derating chart included. If you need 2 A on many channels simultaneously, use multiple AFB boards or the mechanical AEB variant.

Q: Can I run all 48 channels at 1 kHz (DC mode) simultaneously?
A: Yes—electrically. The SSRs are rated for 1 kHz switching. However, the backplane communication to the output module becomes the limiting factor. The Mark V output module updates at a maximum rate of approximately 2 kHz for all outputs combined. For 48 channels at 1 kHz each, you would need 48 kHz update rate—not possible. For true high-frequency PWM, use the AFB with a dedicated high-speed output module (DS200DSPCG). Contact us for application engineering support.

Q: The board has per-bank thermal protection. How do I reset it?
A: Auto-reset only. When bank temperature drops below 75°C, the bank re-enables automatically. No manual reset required. If you see repeated thermal shutdowns, reduce load current or improve cooling (add fan, increase panel heatsinking, reduce ambient temperature). The fault LED stays lit until temperature drops below 75°C.

Q: What is the minimum load for the SSRs?
A: No minimum load. SSRs have no mechanical contacts, so there is no minimum current requirement for contact wetting. They will switch 1 mA signals reliably. However, the off-state leakage current (1 mA AC, 0.1 mA DC) may be significant relative to very low loads. For loads under 10 mA, add a bleeder resistor (10 kΩ for AC, 1 kΩ for DC) across the load.

Q: Can I use the AFB for PWM control of a 2 A heater at 120 VAC, 10 Hz?
A: Yes—excellent application. Use a bank configured for AC (zero-crossing mode). The zero-crossing SSR turns on at the next AC zero crossing after the control signal goes high. At 10 Hz (100 ms period), the delay (0–8.3 ms) is negligible. The heater’s thermal inertia smooths the output. Electrical life is essentially unlimited. We have AFB boards running heater PWM for 10+ years continuously.

Q: What QC tests are specific to the RTBAG3AFB?
A: Thirteen tests, all documented:

1. Visual: 20x magnification of all 48 SSR solder joints and heatsink attachment.
2. Input current per channel (sample of 8 per bank): 5 mA ±1 mA at 24 VDC.
3. Turn-on time (DC mode, sample per bank): <100 µs. Oscilloscope capture.
4. Turn-off time (DC mode, sample): <100 µs.
5. Turn-on time (AC mode, sample per bank): <8.5 ms max delay from zero crossing at 60 Hz.
6. On-state voltage drop (sample): <1.5 VAC at 2 A, <1.0 VDC at 2 A.
7. Off-state leakage (sample): <1 mA at 280 VAC, <0.1 mA at 60 VDC.
8. Bank-to-bank isolation: 3000 VAC for 5 seconds between A-B, B-C, A-C. Leakage <0.1 mA.
9. Input-to-output isolation per bank: 5000 VAC for 5 seconds.
10. High-cycle test (all 48 channels): 1 kHz (DC mode) for 1,000 seconds (1,000,000 cycles). Zero misfires.
11. Thermal test: 1 A on all 48 channels (16 A per bank) for 2 hours with panel mounting. Case temperature <85°C. Thermal image of all three banks.
12. Thermal shutdown test (sample per bank): Increase load to 2 A per channel, monitor temperature. Verify bank disables at 90°C ±5°C, re-enables at 75°C ±5°C.
13. Inrush test (sample per bank): AC mode: 20 A for 10 ms, 100 pulses. DC mode: 10 A for 10 ms, 100 pulses. No SSR failure.
14. Ribbon cable test: All three 64-pin shielded cables tested.

Q: What shipping protection for this large heavy board?
A: The RTBAG3AFB weighs 2.9 kg (6.4 lbs) with heatsink. Maximum protection: anti-static bag, custom ESD foam cradle with cutouts for the heatsink fins and terminal blocks (all three banks), hard plastic clamshell case with foam liner. Thermal pad kit (required for any load >0.5 A per channel average) in separate sealed bag. Double-wall box with “FRAGILE,” “ESD SENSITIVE,” “HEAVY,” and “DO NOT STACK” labels. Shock indicator and tilt indicator on outside. Each board ships individually. The three ribbon cables ship in separate anti-static bags inside the same box. Application note on high-speed PWM control (12 pages) included as printed document.

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