DS200DCPAG1ABB | GE Speedtronic DIO | In Stock

Description

Product Introduction

The GE DS200DCPAG1ABB is a high-current digital combinational I/O module for the Mark V Speedtronic turbine control system. It combines the 8 A relay outputs of the DCPAG1A with acrylic conformal coating for protection against humidity and salt fog in coastal and offshore environments.

Core advantage: The ABB suffix protects the high-current relay traces and input optocouplers from corrosion. Uncoated DCPAG1A boards in offshore installations develop corrosion on relay pin solder joints after 12-18 months, causing intermittent contact (heating, resistance rise). Coated boards show no corrosion after 5+ years. Field data from offshore platforms shows coated DCPAG1A boards have 90% lower failure rate than uncoated.

Key Technical Specifications

Key Selling Points & Differentiators

• Acrylic coating for coastal/offshore – Protects PCB traces and solder joints from salt fog. Uncoated boards fail in 12-18 months offshore.
• 8 A relay outputs – Same high-current capability as DCPAG1A (8 A, Form C). No reduction in rating.
• Coated relay pins – Solder joints under each relay are coated. Prevents creep corrosion up the pins.
• Input optocouplers coated – Prevents leakage current from salt contamination. Uncoated optocouplers in high humidity trigger false inputs.
• UV-verified coating – Acrylic fluoresces blue-green under UV. Inspected for pinholes around high-current traces.
• Salt fog tested (optional) – Red dot boards receive 96-hour salt fog test per ASTM B117.
• 30-day warranty with cross-ship – Coating defect or relay failure? We send replacement same day.

Frequently Asked Questions (FAQ)

Q: What is the difference between DS200DCPAG1A (uncoated) and DS200DCPAG1ABB (coated)?
A: Conformal coating. DCPAG1A: no coating (indoor, clean). DCPAG1ABB: acrylic coating for humidity and salt fog. Electrical specifications are identical. For offshore platforms, coastal power plants (within 5 miles of salt water), and paper mills, use ABB. For climate-controlled control rooms, DCPAG1A is sufficient.

Q: Does the conformal coating affect the relay contacts?
A: No – the relays are sealed. Coating covers the relay pins and PCB but does not enter the relay enclosure. The contacts remain dry. However, do not apply coating to the relay top – we mask relays during coating. Our refurbished ABB boards have clean, uncoated relay tops.

Q: How do you test the coating on refurbished ABB boards?
A: We inspect under UV light (365 nm) – acrylic fluoresces blue-green. Any dark spots indicate missing coating. We also perform insulation resistance test: 500 V DC between adjacent relay pin solder joints. Coated boards must measure >100 GΩ. About 8% of incoming ABB boards fail – coating has pinholes. Those are stripped and re-coated.

Q: I see an ABB board with a red dot near the terminal blocks. What does that mean?
A: The red dot indicates the board received an additional “salt fog” test per ASTM B117 for 96 hours. The board must show no corrosion on any metal surface (relay pins, terminal block screws, edge connector). Standard ABB boards are not salt fog tested. We charge an extra $35 for red-dot boards. For offshore platforms, we recommend red-dot.

Q: My ABB board has a relay that welds shut after a few operations (8 A load). Is the coating causing this?
A: No – coating does not affect contact performance. The silver-tin oxide contacts may have been damaged by a previous over-current event (before coating). Replace the relay (Omron G7L-2A-SN, 24 V DC coil). Check your load: 8 A resistive is fine. 8 A inductive (motor) may exceed the 4 A inductive rating. Derate to 4 A for motor loads.

Q: How do I identify a counterfeit DS200DCPAG1ABB?
A: Genuine boards have “DCPAG1ABB” printed on the edge connector label. Under UV light, the coating fluoresces blue-green. Counterfeits often use polyurethane (no fluorescence) or no coating with fake label. Also check the relays: genuine Omron G7L-2A-SN (8 A). Fakes use G7L-1A (Form A only) or smaller relays (4 A). We UV-inspect and photograph every board.

Q: Can I field-coat my existing DCPAG1A board to make it an ABB?
A: We strongly advise against it. The large relays make coating difficult – you cannot coat under the relays without removing them. Field coating often leaves gaps where salt can creep. Send us your board for professional coating ($65). We disassemble, coat, reassemble, and test.

Q: Does the coating affect heat dissipation from the relays?
A: Minimal – acrylic coating is 0.05 mm thick. The relays generate heat (60 mA x 24 V = 1.44 W per energized relay). At 8 relays energized simultaneously (11.5 W), the board runs 2-3°C hotter than uncoated. Still within the 0-55°C rating. For high-density relay applications, add a fan tray (we sell for $95).

Q: What is the shelf life of ABB boards in coastal storage?
A: Acrylic coating does not degrade in storage if kept in anti-static bags with desiccant. We have shipped ABB boards stored for 5 years with no coating issues. However, the relays may absorb moisture if stored in high humidity ( >80%). For long-term storage in coastal areas, store boards in sealed bags with silica gel. We include desiccant with each order.

Q: Do you offer a version with 8 A relays and extended temperature (-20 to 65°C)?
A: No – the ABB is 0-55°C only. The acrylic coating becomes brittle below -20°C (though ABB is not rated for -20°C operation). For cold offshore environments (North Sea winters), use DCPAG1AJB (special order: extended temp with silicone coating). Lead time 4-6 weeks. Contact us for pricing.

Q: Does the ABB coating prevent salt creep on relay pins?
A: Yes – the coating encapsulates the solder joint and the first 2 mm of each relay pin. This blocks salt creep (electrochemical migration) that causes shorts between pins. Uncoated boards in salt fog develop dendrites between relay pins within 12 months. Coated boards show no dendrites after 5 years.

Q: Can I use the ABB board with gold-plated terminal blocks for maximum offshore protection?
A: Yes – we recommend gold-plated terminal blocks for offshore ABB orders ($25 extra). Tin-plated blocks will corrode in salt fog (the coating does not cover the terminal block screws). Gold blocks resist corrosion. We pre-install gold blocks on all ABB boards for offshore customers. Specify “offshore” when ordering.

AO845A0/4-20ma R=1000/500 1*8
“AO8900/4-20mA,0-5V,0-10V R=500/10001*8”
“AO8950/4-20mA,0-5V,0-10V R=500/10001*8,HART”