DS200SDCIG1 | GE DS200 Servo I/O Card In Stock

Description

Product Introduction

The DS200SDCIG1 is a servo interface and signal conditioning board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It acts as a intermediary between the servo controller (SDCC series) and field devices, providing signal conditioning, distribution, and protection.

Unlike the SDCC servo controller boards that perform PID calculations and generate outputs, the SDCIG1 is a passive/pass-through interface board. It takes ±10 VDC outputs from a servo controller, conditions them (buffering, filtering, surge protection), and distributes them to up to four servo valves. It also accepts 4–20 mA position feedback signals, conditions them, and passes them to the servo controller. This board is used in systems where the servo controller is located in a different rack from the field wiring terminals, or where additional signal conditioning is required.

Key Technical Specifications

Key Selling Points & Differentiators

• Signal conditioning for up to 4 servo valves – Extends the reach and protects the main servo controller. Buffered outputs provide 20 mA drive (SDCC provides only 10 mA).
• Switchable filtering – Low-pass filters on outputs (1 kHz) and feedback inputs (100 Hz). Reduce noise on long cable runs.
• Surge protection on outputs – TVS diodes clamp transients. Protects expensive SDCC servo controller from field-side surges.
• Loop power for 4–20 mA feedback – Supplies 24 VDC for up to eight 2-wire transmitters. No external power needed.
• Pass-through LVDT capability – For systems with external LVDT conditioners. Routes signals without modification.
• Pluggable terminal blocks – Easy field wiring replacement.
• 2-year warranty – Covers signal conditioning circuits, surge protection, and isolation.

Frequently Asked Questions (FAQ)

Q: What is the difference between SDCC (servo controller) and SDCIG1 (servo interface)?
A: SDCC performs PID calculation, generates ±10 VDC output, and reads feedback directly. SDCIG1 is a passive interface: it conditions signals between SDCC and field devices. Use SDCIG1 when you need buffering, filtering, or surge protection, or when the servo controller is in a different rack.

Q: Can I use the SDCIG1 without an SDCC servo controller?
A: No. The SDCIG1 has no PID logic. It requires ±10 VDC inputs from an SDCC or other controller. It cannot control a valve independently.

Q: Does the SDCIG1 have LVDT excitation?
A: No. The SDCIG1 passes LVDT signals through only. For direct LVDT connection, use SDCCG1AGD or external LVDT conditioner.

Q: What is the output drive capability?
A: 20 mA per channel (versus 10 mA from SDCC). Use SDCIG1 to drive valves requiring >10 mA but <20 mA. For higher current, use SDCCG1AEC (100 mA).

Q: What QC tests are performed?
A: Output buffering (1:1 transfer, error <0.05%), feedback conditioning (4–20 mA pass-through, error <0.1%), filtering verification, surge protection (TVS clamp at ±15 V), isolation (1800 VAC), burn-in (48 hours).

Q: What shipping protection?
A: Anti-static bag, ESD foam cradle, double-wall box. Each board ships individually.

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