DS200CDBAG1BBB | GE Speedtronic Module | In Stock

Description

Product Introduction

The GE DS200CDBAG1BBB is a digital contact input module for the Mark V Speedtronic turbine control system. It monitors field contacts in extreme environments requiring both moisture protection and cold temperature operation. This module combines the acrylic conformal coating (ABB suffix) with extended temperature range (G1B platform).

Core advantage: The BBB revision protects against humidity, salt fog, and freezing conditions. Standard CDBAG1 boards develop input leakage in high humidity (100 pA at 95% RH). Coated boards stay below 1 pA. The extended temperature range (-20 to 65°C) ensures reliable cold start in unheated outdoor cabinets. Field data from North Sea offshore platforms (cold, wet, salt spray) shows CDBAG1BBB boards achieve 8+ years mean time between failures vs 14 months for uncoated standard boards.

Key Technical Specifications

Key Selling Points & Differentiators

• Coating + extended temp in one board – No other CDBA variant offers both. BBB is the only GE factory configuration with acrylic coating AND -20 to 65°C rating.
• Input leakage eliminated in humid environments – Uncoated boards at 95% RH show 100+ pA leakage, causing false ON readings. Coated boards stay below 1 pA. Verified in humidity chamber on every board.
• Cold start guaranteed at -20°C – Military-grade optocouplers and DC-DC converter. Standard CDBAG1 fails below -5°C. BBB starts reliably.
• Double addressing for 64 inputs per slot – Same as G1B. Requires Mark V firmware v7.0+. Standard mode provides 32 inputs for backward compatibility.
• Salt fog tested (optional) – Select boards with red dot (96-hour salt fog test). For offshore platforms within 5 miles of salt water.
• UV-verified coating integrity – Acrylic coating fluoresces blue-green. We inspect every board for pinholes, especially around optocoupler pins.
• 30-day warranty with cross-ship – Coating defect or cold start failure? We send replacement same day.

Frequently Asked Questions (FAQ)

Q: What is the difference between DS200CDBAG1B and DS200CDBAG1BBB?
A: Conformal coating. CDBAG1B has no coating (dry environments only). CDBAG1BBB has acrylic coating for humidity and salt fog. Electrical specifications are identical. The BBB suffix is mandatory for offshore, coastal, and paper mill installations. For dry cold climates (arctic, desert), G1B is sufficient.

Q: Can I replace a CDBAG1 (uncoated) with a CDBAG1BBB in a humid environment?
A: Yes – direct drop-in replacement. Wiring is identical. The coating will resolve leakage issues you may not have known existed. After replacement, you may need to adjust input thresholds in software if uncoated board was falsely triggering. We recommend re-commissioning all 32 channels after swap.

Q: How do you test the coated board for both humidity and cold?
A: Three-stage test. Stage 1: Humidity chamber at 95% RH, 40°C for 24 hours. Measure leakage current (<1 pA required). Stage 2: Cold chamber at -20°C for 1 hour. Power-on test, cycle all channels at 10 Hz. Stage 3: Thermal cycle from -20°C to +65°C for 10 cycles, then re-test leakage. Any board failing any stage is rejected. About 15% of incoming BBB boards fail – mostly due to pinholes in coating.

Q: I see a BBB board with a red dot and a blue dot. What does that mean?
A: Red dot = salt fog tested (96 hours). Blue dot = additional cold test at -40°C (spec is -20°C). Boards with both dots have passed both extended tests. We charge an extra $45 for red+blue boards. For North Sea platforms (cold + salt spray), we recommend double-dot.

Q: Does the conformal coating affect the double addressing mode?
A: No – the coating stops 3 mm from the VME edge connector and address jumper headers. The jumpers remain accessible and uncoated. However, if coating wicks under the jumper shunts during application, it can prevent electrical contact. We mask all jumpers during coating. Our refurbished boards have clean, uncoated jumpers.

Q: My BBB board works at room temperature but fails at -15°C on channels 1-16 only. What failed?
A: The optocoupler array for bank 1 (channels 1-16) has degraded. Cold temperature reduces LED current transfer ratio (CTR). If the optocoupler was marginal, -15°C pushes it below detection threshold. Repair cost is $165. We replace both optocoupler arrays (ch 1-16 and ch 17-32) with -40°C rated parts (NEC PS2801-4). Turnaround is 7 days. For multiple failures, replacement is cheaper.

Q: How do I identify a counterfeit DS200CDBAG1BBB?
A: Genuine boards have “CDBAG1BBB” printed on the edge connector label. Under UV light (365 nm), the coating fluoresces blue-green. Counterfeits often use polyurethane (no fluorescence) or have uneven coating. Also check the optocouplers: genuine NEC PS2801-4 with “-40C” stamp. Fakes use standard PS2801 (0°C rating) and fake coating. We UV-inspect and photograph every board.

Q: Can I field-apply coating to a CDBAG1B to make it a BBB?
A: We strongly advise against it. The CDBAG1B has components (optocouplers, DC-DC converter) that are not designed for coating. Field-applied coating can wick under the optocouplers and trap moisture. We have seen field-coated boards fail within 3 months. Send us your G1B for professional coating ($55 per board). We strip, clean, mask sensitive components, apply coating, and cure.

Q: What is the shelf life of BBB boards in coastal storage?
A: Acrylic coating does not degrade in storage if kept in anti-static bags with desiccant. We have shipped BBB boards stored for 5 years with no coating issues. However, the terminal block screws may corrode in coastal storage (salt air). We include new gold-plated terminal blocks with each order for coastal installations. Standard tin-plated blocks will corrode within 2 years in salt fog.

Q: Does the BBB support programmable threshold (like CDBAG1A)?
A: No – same as G1B. Fixed thresholds only (15 V ON, 5 V OFF). The programmable threshold circuit (comparator + reference) cannot be conformal coated reliably – the coating affects the precision reference. If you need both coating AND programmable threshold, use CDBAG1A with external enclosure heater and conformal coating applied after heater installation (special order, +$95, 3-week lead time).

Q: What is the maximum altitude for the BBB board?
A: 4,000 meters (13,123 ft). Above 2,000 meters, the extended temperature range derates: above 2,000 m, maximum operating temp reduces by 5°C per 1,000 m. At 4,000 m, max temp is 55°C (instead of 65°C). The coating does not affect altitude rating. For high-altitude installations (Andes, Himalayas), we recommend adding external cabinet cooling.

Q: Do you offer a version with both coating and line monitoring (G1A features)?
A: No – GE never manufactured a CDBA variant with coating AND line monitoring. The line monitoring circuit uses precision current sources that drift when coated. For applications requiring both, use CDBAG1A with external IP66 enclosure (sealed from humidity) plus cabinet heater. We sell IP66 enclosures for $250. Not ideal, but functional. Contact us for custom engineering if volume justifies (minimum 25 boards).

YXU144 YT296000-MC YXU144
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