DS200SDCIG2 | Mark V Turbine 2-Axis Servo Interface OEM

Description

Product Core Brief

• Model: DS200SDCIG2
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: Dual-channel servo interface board
• Product Type: Servo Interface Board (2 channels)
• Key Specs: 2 analog outputs | 4 analog inputs | LVDT pass-through | 1500 VAC isolation
• Condition: New Surplus.

Product Introduction

The DS200SDCIG2 is a dual-channel servo interface and signal conditioning board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides two independent servo interface channels (each with buffered output, dual redundant 4–20 mA feedback, and LVDT pass-through) on a single board.

The SDCIG2 is essentially two SDCIG1 channels integrated onto one PCB. It is designed for applications requiring two servo valves with interface conditioning in a single slot: gas turbine fuel and bypass valves, steam turbine HP and IP valve control, or compressor anti-surge and recycle valve control. Saves one rack slot compared to using two SDCIG1 boards.

Key Technical Specifications

Key Selling Points & Differentiators

• Two servo interfaces in one slot – Controls up to two valves. Saves one rack slot versus two SDCIG1 boards.
• Redundant feedback per channel (2 x 4–20 mA) – Each servo channel accepts two position feedback signals.
• Switchable output filtering (1 kHz) – Enable/disable per channel via jumper.
• Switchable feedback filtering (100 Hz) – Independent per channel.
• Loop power for 4–20 mA feedback – 24 VDC supplied for 2-wire transmitters.
• LVDT pass-through – Route external LVDT conditioner signals without modification.
• QC includes dual-channel simultaneous test – Both channels tested concurrently.
• 2-year warranty – Covers both channels.

Frequently Asked Questions (FAQ)

Q: What is the difference between SDCIG1 (single) and SDCIG2 (dual)?

Q: Can I replace two SDCIG1 boards with one SDCIG2?
A: Yes—electrically and functionally compatible. Same pinout per channel. Re-terminate field wires to the new terminal blocks (same numbering per channel). No logic changes required. Allow 2–4 hours.

Q: Are the two channels isolated from each other?
A: Partially. Both channels share a common isolated ground (same as two separate SDCIG1 boards would if powered from same backplane). Isolation between channels is 500 VAC. For full galvanic isolation between channels, use SDCIG1ABA (single channel, fully isolated) two boards.

Q: What is the total backplane current draw?
A: 700 mA max at 5 VDC (two channels). Standard Mark V power supplies handle this easily.

Q: What QC tests are specific to the SDCIG2?
A: Standard tests per channel (output buffering, feedback calibration, filtering) plus: dual-channel simultaneous step test, cross-channel interference (<5 mV induced), total backplane current, thermal imaging (both channels at full load), burn-in (72 hours at +65°C, both channels active).

Q: What shipping protection?
A: Anti-static bag, ESD foam cradle, double-wall box. Each board ships individually. Spare terminal blocks included. Configuration jumper guide included.

35003500/40
35003500/42 Bently
35003500/45