IC3600SSVG1C - Servovalve Driver Board

TECHNICAL SPECIFICATIONS:

Part Number: IC3600SSVG1C
Manufacturer: General Electric
Series: Mark II
Product Type: Servovalve Driver Board
Hardware Revision: 1C
Board Function: Servovalve current loop drive and position feedback summing
Drive Output: Precision bi-directional DC output
Mounting Type: Rack Card Guide / Connector Edge Mount
Operating Temperature: 0°C to +60°C (32°F to +140°F)
Storage Temperature: -40°C to +85°C (-40°F to +185°F)
Relative Humidity: 5% to 95% Non-Condensing
Cooling Requirements: Free air convection
Repair Lead Time: 3 to 5 Business Days
Availability: In Stock
Country of Origin: United States

FUNCTIONAL DESCRIPTION OF IC3600SSVG1C:

The IC3600SSVG1C is a Servovalve Driver Board designed and manufactured by General Electric as part of the legacy Speedtronic Mark II turbine control system series. Engineered as a high-precision closed-loop control card, the board acts as the critical analog interface between turbine control logic and electro-hydraulic servovalves governing fuel gas valves, liquid fuel regulators, and inlet guide vanes (IGVs).

CIRCUIT DESIGN & ARCHITECTURE:

The board integrates precision operational amplifiers configured as summing and error-detection nodes that compare position command voltages against linear variable differential transformer (LVDT) feedback signals. A push-pull driver stage converts error voltages into continuous, bi-directional DC outputs required to stroke electro-hydraulic servovalve coils accurately. Gold-plated edge contacts interface with the Mark II backplane to maintain high signal integrity across analog control loops.

RELIABILITY & FIELD MAINTENANCE:

Constructed using industrial-grade solid-state components and conformal-coated trace networks, the IC3600SSVG1C withstands severe thermal stress and continuous industrial vibration. Its card-guide form factor ensures smooth insertion into standard Speedtronic card cages, facilitating low Mean Time to Repair (MTTR) during routine panel servicing or emergency replacement.

KEY FEATURES OF IC3600SSVG1C

• Precision Servovalve Control: Converts analog voltage error signals into regulated bi-directional DC driving currents for electro-hydraulic actuators.
• Closed-Loop Feedback Integration: Sums controller setpoint inputs against LVDT valve position feedback to eliminate steady-state error.
• Mark II Legacy Architecture: Engineered specifically for direct insertion into GE Speedtronic Mark II card racks.
• Gold-Plated Card Edge Interface: Formed with high-durability gold fingers for low-resistance mating with backplane connectors.
• Industrial Solid-State Construction: Incorporates high-stability resistors, semiconductors, and onboard trimming potentiometers for precise field calibration.

SYSTEM CONFIGURATION & SETUP

• Rack Installation: Align the board with designated card guide rails in the Mark II control cabinet and slide firmly until edge connectors seat securely into the backplane.
• Potentiometer Calibration: Utilize onboard multi-turn cermet potentiometers to fine-tune null current offset and loop gain limits according to servovalve specifications.
• Electrostatic Precaution: Always wear a grounded ESD wrist strap when handling the board to prevent static damage to sensitive solid-state junction components.

WHY BUY FROM WOC

World of Controls provides specialized replacement and rapid bench repair solutions for legacy General Electric Speedtronic Mark II systems, including the Servovalve Driver Board. To ensure flawless signal processing during high-demand operations, our certified technicians rigorously test every UNUSED surplus and precision-REBUILT module under simulated conditions. Backed by full warranty assurances and direct unit exchange options, we maintain critical legacy inventory to prevent unscheduled downtime in your turbine facilities. Contact us today for instant quotes, stock confirmation, or priority international delivery.

FREQUENTLY ASKED QUESTIONS:

What is GE IC3600SSVG1C?

The GE IC3600SSVG1C is a Servovalve Driver Board (SSVG) manufactured for Speedtronic Mark II gas and steam turbine control systems. It converts analog voltage control errors into proportional bi-directional DC milliampere currents to drive electro-hydraulic servovalves governing fuel and hydraulic actuators.

How does the closed-loop summing circuit on the IC3600SSVG1C maintain precise valve positioning?

The board utilizes high-gain operational amplifier summing junctions to algebraically compare the stroke command voltage from the main governor with position feedback voltages from LVDTs. The resulting error signal is amplified to drive the output transistor stage, maintaining exact physical valve position under changing hydraulic load conditions.

What operational symptoms signal a drive-stage or feedback-stage component failure on the SSVG card?

Degraded output transistors, dried-out decoupling capacitors, or drifted gain resistors typically cause severe valve hunting, erratic actuator oscillation, null-current calibration shift, or fail-safe tripping due to unmitigated position error flags.

How are null-bias offset currents adjusted on the IC3600SSVG1C during valve commissioning?

Zero-offset calibration is performed via onboard multi-turn trimming potentiometers. While monitoring output current across test points with the control loop at equilibrium, technicians adjust the null potentiometer until current output matches the exact servovalve coil mechanical center specification (typically 0 mA or specified bias).