DS200SDCCG4AEC | GE DS200 Octo 100mA Servo Card In Stock

Description

Product Core Brief

• Model: DS200SDCCG4AEC
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: Octo-channel high current servo for direct-drive and torque motor valves
• Product Type: High Current Servo Drive Controller (8 channels)
• Key Specs: 8 x ±10 V @ 100 mA | 16 x 4–20 mA inputs | 1 ms update | 100 mA per channel
• Condition: New Original.

Product Introduction

The DS200SDCCG4AEC is an octo-channel high-output current servo drive controller for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides eight independent servo control loops with ±10 VDC output at 100 mA per channel—ten times the current capability of standard SDCCG4A boards (10 mA).

The “4AEC” suffix indicates an eight-channel high-current variant. This is the highest channel count, highest output current servo controller ever produced for Mark V. It is designed for the largest and most demanding turbine systems requiring high current to drive direct-drive proportional valves, torque motor valves, or piezo-actuators across eight channels simultaneously: advanced gas turbines with 8 fuel stages (each requiring 50–100 mA), large steam turbines with 8 high-flow admission valves, or complex compressor stations.

Key Technical Specifications

High Current Octo-Channel Features (4AEC)

Key Selling Points & Differentiators

• Eight 100 mA outputs in one slot – Drives eight direct-drive proportional valves, torque motor valves, or piezo-actuators directly. No external current boosters. Saves seven rack slots versus SDCCF1 with external amplifiers.
• Adjustable current limit (10–120 mA) per channel – Configure via software to match each valve’s requirements. Prevents valve coil burnout.
• Output short-circuit protection per channel – Foldback current limiting. Auto-recovery when short removed.
• Heatsink included – Required for operation. 2.0°C/W aluminum heatsink attached.
• Redundant feedback per channel (2 x 4–20 mA) – Each channel accepts two position feedback signals.
• Fast 1 ms update rate on all eight channels simultaneously – All loops update concurrently.
• Synchronized output capability – Coordinate multiple valves. Jitter <5 µs.
• QC includes eight-channel simultaneous closed-loop test at 100 mA – All channels tested concurrently at full current.
• 2-year warranty – Covers all eight channels.

Frequently Asked Questions (FAQ)

Q: What is the total backplane current draw?
A: 6.0 A maximum at 5 VDC. This is extremely high. Most Mark V power supplies are rated 5–10 A at 5 V. The SDCCG4AEC alone draws 6 A. You MUST use a high-capacity power supply (DS200PCCAG5A or equivalent) and minimize other modules. For virtually all systems, you will need an external 5 V supply (special order, 8 A minimum). We provide load calculation worksheet.

Q: What is the total power dissipation?
A: Output stage: 8 channels x 10 V x 0.1 A = 8 W maximum. Logic: 5 V x 6 A = 30 W. Total 38 W. This requires significant cooling. Heatsink is attached but may not be sufficient at high ambient temperatures. For continuous operation at >50°C ambient, forced air cooling (400 LFM minimum) or panel mounting (thermal pad to metal backplane) is required.

Q: Can I run all eight channels at 100 mA continuously?
A: Thermally limited. At 25°C ambient, with heatsink and forced air (400 LFM), yes. At 50°C ambient, derate to 75 mA per channel. At 65°C ambient, derate to 50 mA per channel. Without forced air, derate to 50 mA at 25°C. Thermal derating chart included.

Q: Can I replace eight SDCCF1 boards (with external current boosters) with one SDCCG4AEC?
A: Yes, but requires extensive reconfiguration (40–50 hours). We strongly recommend a factory site visit for first-time installations.

Q: What valves require 100 mA drive current?
A: Direct-drive proportional valves (Moog D63x series high-current coils, 40–100 mA), torque motor valves (older designs, 50–100 mA), piezo-actuators (capacitive load, 0–100 mA). Check valve datasheet for “coil current” or “drive current.” If R = V/I, for 10 V, I = 100 mA gives R = 100Ω minimum load.

Q: What QC tests are specific to the SDCCG4AEC?
A: Standard tests per channel plus:

• Output current capability: 100 mA into 100Ω load per channel
• Current limit accuracy per channel (programmable)
• Short-circuit test per channel
• Eight-channel simultaneous step test at 100 mA
• Cross-channel interference (all channel pairs)
• Thermal imaging at full load (8 channels at 100 mA)
• Total backplane current (6.0 A max)
• Heatsink temperature measurement
• Burn-in: 72 hours at +50°C, all channels at 75 mA (derated)

Q: What shipping protection?
A: Anti-static bag, ESD foam cradle with heatsink cutout, double-wall box with “HEAVY,” “HIGH CURRENT,” “FRAGILE” labels. Each board ships individually. Thermal pad kit included. Pallet recommended for shipment.

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