DS200SDCIGIAHB | GE Mark V High Current Servo Interface

Description

Product Core Brief

• Model: DS200SDCIGIAHB
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: High-current single SSR interface
• Product Type: High Current SSR Interface Board (1 channel)
• Key Specs: 1 x 5 A SSR | 2 x 4–20 mA inputs | <100 µs switching | Heatsink included
• Condition: New Original.

Product Introduction

The DS200SDCIGIAHB is a high-current single-channel solid state relay interface board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides one 5 A SSR output with redundant 4–20 mA feedback inputs, all in a single slot.

The “IAHB” suffix indicates a single-channel high-current SSR variant. This is the 5 A counterpart to the SDCIG1AFB (2 A). Use it to switch servo valve power (5 A at 120 VAC or 24 VDC), control a high-current solenoid valve directly, or interrupt heater circuits. Includes heatsink (required), snubber protection on AC output, TVS protection on DC output, and <100 µs switching speed. Redundant feedback inputs provide position monitoring for the valve.

Key Technical Specifications

Key Selling Points & Differentiators

• 5 A SSR output – 2.5x higher current than standard AFB (2 A). Switch larger servo valves, heater circuits, or high-current solenoids directly.
• 20 A inrush capability (AC mode) – Handles cold filament inrush (incandescent lamps) or capacitive loads without damage.
• <100 µs switching speed – 150x faster than mechanical relays. Use for fast fuel trips or microsecond-precision enable.
• Redundant 4–20 mA feedback inputs (2) – Monitor valve position with dual transmitters. Average or select best via external logic.
• Heatsink included – Required for operation above 2 A.
• Opto-isolation at 4000 VAC – Protects backplane from field-side surges.
• QC includes 5 A load test for 24 hours – Thermal imaging verifies heatsink temperature <85°C.
• 2-year warranty

Frequently Asked Questions (FAQ)

Q: What is the difference between SDCIG1AFB (2 A SSR), SDCIG1AHB (5 A SSR), and SDCIG1AGB (10 A mechanical relay)?

Q: What is the output voltage drop at 5 A?
A: AC mode: <1.5 V peak. At 120 VAC, load sees 118.5 VAC minimum. DC mode: <1.2 V. For 24 VDC valves, load sees 22.8 VDC minimum—check valve’s minimum operating voltage.

Q: Can I run this board at 5 A continuously without forced air?
A: At 25°C ambient with heatsink and natural convection, 5 A will reach 85°C case temperature within 30 minutes. For continuous operation at 5 A, add forced air cooling (400 LFM) or panel mount using thermal pad. At 50°C ambient, limit to 3 A without forced air.

Q: Does the board require an adjacent empty slot for the heatsink?
A: Yes. PCB is 4HP (single slot). Heatsink extends into adjacent slot (8HP total width). Plan rack layout accordingly. For tight spaces, use panel mount option (remove heatsink, mount board directly to metal panel with thermal pad). Contact us for panel mount kit.

Q: What is the leakage current when SSR is off?
A: AC output: <2 mA at 280 VAC. May keep small LED dimly lit. Add bleeder resistor (10 kΩ, 5 W) in parallel with load. DC output: <0.2 mA at 60 VDC.

Q: What QC tests are specific to the IAHB revision?
A: Ten tests: output current capability (5 A into load), inrush test (20 A for 10 ms, 100 pulses AC), on-state voltage drop (<1.5 VAC / <1.2 VDC at 5 A), off-state leakage (<2 mA AC), switching speed (<100 µs DC), high-cycle test (1,000,000 cycles at 1 kHz DC, low current), thermal test (5 A for 4 hours with forced air, case <85°C), feedback calibration (error <±0.02 mA), isolation (output to backplane 5000 VAC), burn-in (72 hours at +50°C, 3 A).

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