DS200RTBAG2AFB | GE DS200 High Speed SSR Board In Stock

Description

Product Core Brief

• Model: DS200RTBAG2AFB
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: High-density dual-bank solid state relay output board
• Product Type: SSR Output Board (32 channels)
• Key Specs: 32 SSRs | 2 A per channel | <100 µs switching | 2 banks of 16
• Condition: New Original.

Product Introduction

The DS200RTBAG2AFB 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 32 independent SSR outputs arranged as two isolated banks of 16 channels each—combining the fast switching of SSRs with the channel density of the RTBAG2 platform.

The “2AFB” suffix indicates a dual-bank solid state board. This is essentially two RTBAG1AFB boards integrated onto a single PCB with bank-to-bank isolation. It is designed for applications requiring high cycle rates across many outputs: PWM control of multiple heaters, high-speed valve arrays, lamp testing fixtures, or any application where 32 channels of silent, bounce-free switching are needed in a single rack slot.

Key Technical Specifications

Key Selling Points & Differentiators

• 32 SSRs in a single slot – Two independent banks of 16 channels each. Replaces two RTBAG1AFB boards and saves a rack slot. 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) and Bank B for random-turn-on DC switching (fast response) on the same board. Jumpers selectable per bank at installation.
• Bank-to-bank isolation at 2500 VAC – Connect Bank A to 120 VAC motor starters and Bank B to 24 VDC solenoid valves on the same board. No ground loops, no isolation concerns. Isolation exceeds IEEE C37.90.
• <100 µs switching time (DC mode) – Control high-speed injectors, fast-acting valves, or PWM heater banks with 1 kHz update rates. No mechanical bounce, no contact wear.
• 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.
• Very low backplane current draw – 5 mA per channel (160 mA total for 32 channels) versus 480 mA on electromechanical RTBAG2A. Frees up backplane capacity for other modules. Can run on the smallest Mark V power supply.
• Removable terminal blocks, color-coded per bank – Bank A terminals are gray, Bank B are black. Replace a damaged block without unwiring the entire board. 64 total terminals (2 per channel).
• QC includes 1,000,000 cycle test on all 32 channels – Every channel cycled at 1 kHz (DC mode) for 1,000 seconds. Zero misfires. Bank-to-bank isolation verified at 3000 VAC. Thermal imaging at full load.
• 2-year warranty – Covers output short circuit, failure to turn on/off, thermal protection malfunction, or any manufacturing defect on either bank.

Frequently Asked Questions (FAQ)

Q: What’s the difference between RTBAG2A (mechanical) and RTBAG2AFB (SSR)?

Choose the AFB for high-speed applications (PWM, high cycle rates >10 Hz) or when backplane current is limited. Choose the standard RTBAG2A for loads above 2 A or when NC contacts are required (SSRs are SPST-NO only).

Q: Can I replace a mechanical RTBAG2A 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 RTBAG2A 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 the mechanical board.
3. The AFB requires panel mounting for loads above 0.5 A per channel average. The mechanical board can be DIN rail mounted at full load.

Q: How do I configure Bank A for AC and Bank B for 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. The default configuration from the factory is Bank A = AC, Bank B = DC. Change jumpers before installing the board. Do not change jumpers with power applied.

Q: The board has thermal protection. What triggers it, and how do I reset?
A: Each bank has a thermistor bonded to the heatsink. At 90°C ±5°C, the bank disables all outputs (fault LED lights red). The Mark V output module still sends control signals, but the SSRs will not turn on. At 75°C ±5°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).

Q: Can I run all 32 channels at 2 A simultaneously?
A: No. 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. Derate as follows: with panel mounting (metal surface, 1 mm thermal pad), maximum 1 A per channel continuous. With forced air cooling (200 LFM), maximum 1.5 A per channel. With DIN rail mounting (no heatsink), maximum 0.5 A per channel. Thermal derating chart included.

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 Bank A 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: How do I connect the AFB to my Mark V output modules?
A: Use two separate output modules (recommended). Connect Bank A (channels 1–16) to output module #1 via the included 64-pin ribbon cable. Connect Bank B (channels 17–32) to output module #2 via the second ribbon cable. Each output module provides 16 control signals (bits). You can also use one 32-output module if available (special order). The board does NOT support bank select jumpers (unlike the mechanical RTBAG2A)—each bank requires its own ribbon cable.

Q: What QC tests are specific to the RTBAG2AFB?
A: Twelve tests, all documented:

1. Visual: 20x magnification of SSR solder joints, 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): <100 µs from control signal to output. Oscilloscope capture.
4. Turn-off time (DC mode, sample): <100 µs.
5. Turn-on time (AC mode, sample): <8.5 ms max delay from zero crossing at 60 Hz.
6. On-state voltage drop (sample): <1.5 VAC peak 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. Leakage <0.1 mA.
9. Input-to-output isolation per bank: 5000 VAC for 5 seconds.
10. High-cycle test (all 32 channels): 1 kHz (DC mode) for 1,000 seconds (1,000,000 cycles). Zero misfires.
11. Thermal test: 1 A on all 32 channels (16 A per bank) for 2 hours with panel mounting. Case temperature <85°C. Thermal image of both banks.
12. Thermal shutdown test: 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.

Q: What shipping protection for this heavy board?
A: The RTBAG2AFB weighs 2.4 kg (5.3 lbs) with heatsink. Maximum protection: anti-static bag, custom ESD foam cradle with cutouts for the heatsink fins and terminal blocks (both banks). Thermal pad kit (peel-and-stick) 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 two ribbon cables ship in separate anti-static bags inside the same box. Application note on PWM control included as printed document (8 pages).

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