GE SPEEDTRONIC Modules: IC3600SIXL

Technical Dossier

Product Details And Specifications

GE SPEEDTRONIC Series Technical Notes

The Evolution of SPEEDTRONIC Architecture

The SPEEDTRONIC lineage began with Mark I (late 1960s), a relay-logic-based system with discrete analog cards for speed sensing, temperature monitoring, and fuel control. Mark II (early 1970s) introduced solid-state analog circuitry, retaining the same card-cage form factor but improving signal fidelity and reducing relay count. Mark IV (late 1970s–1980s) added microprocessor-assisted sequencing while preserving backward-compatible I/O card slots—this is the generation to which IC3600SIXL belongs. Mark V (1990s) represented a full digital transition: VME-bus architecture, redundant R, S, T processor voting, and serial I/O. Mark VI (2000s) moved to Ethernet-based I/O packs (IONet), replacing backplane-wired cards with distributed I/O modules. Mark VIe (2010s–present) is the current standard, featuring IEC 61131-3 programming, EtherNet/IP, and cybersecurity-hardened firmware.

Compatibility note: Mark I/II/IV cards (IC3600-series) are not electrically or mechanically interchangeable with Mark V (DS200-series) or Mark VI/VIe (IS200/IS215-series) modules. Panel retrofits require full engineering re-termination.

SPEEDTRONIC Full Catalog & Functionalities (SKU List)

Mark I / II / IV — IC3600-Series Analog & Logic Cards

• IC3600SIXL: Speed signal input conditioning card; processes magnetic pickup signals for turbine speed sensing.
• IC3600AFAA: Analog function amplifier card; signal scaling and offset for fuel control loops.
• IC3600AFAB: Analog function amplifier, variant B; alternate gain configuration for steam turbine applications.
• IC3600EPCA: Electro-hydraulic proportional control amplifier; drives servo valves in fuel and IGV control.
• IC3600LRCA: Load reference control card; manages load setpoint ramp and droop for grid synchronization.
• IC3600SDIA: Speed detector input card; dual-channel magnetic pickup interface with overspeed trip logic.
• IC3600TCQA: Thermocouple input card; 12-channel Type K/J TC signal conditioning for exhaust temperature monitoring.
• IC3600VRLA: Voltage regulator logic card; excitation control interface for generator AVR systems.
• IC3600PSCA: Power supply card; ±15 VDC and +5 VDC regulated outputs for analog card cage.
• IC3600FILA: Filter amplifier card; low-pass filtering for noisy analog sensor inputs in high-EMI environments.
• IC3600DODA: Digital output driver card; 24 VDC discrete output channels for solenoid valve actuation.
• IC3600DIDA: Digital input card; 24 VDC discrete input conditioning for limit switches and pressure switches.
• IC3600AVIA: Analog voltage input card; 0–10 V and 4–20 mA universal input for process variable monitoring.
• IC3600CONA: Controller output network card; analog setpoint transmission to remote actuator panels.
• IC3600TBCA: Terminal board connector card; field wiring termination interface for Mark II panel backplane.

Mark V — DS200-Series (Digital Transition Generation)

• DS200TCQAG1B: Thermocouple input board; 16-channel TC acquisition with cold-junction compensation.
• DS200SDCCG1A: Speed detector and control card; triple-redundant speed input for Mark V R/S/T voting.
• DS200EXPSG1ADA: Expansion power supply board; auxiliary 28 VDC for I/O expansion racks.

Sourcing Hard-to-Find & Obsolete SPEEDTRONIC Parts

GE formally discontinued Mark I, II, and IV SPEEDTRONIC hardware support. Mark V reached end-of-life (EOL) in 2016. DriveKNMS maintains a dedicated inventory of IC3600-series and DS200-series modules sourced from decommissioned turbine panels, controlled teardowns, and verified surplus channels. All units are catalogued by part number, date code, and board revision.

Quality Control for the SPEEDTRONIC Range

IC3600-series cards present specific test challenges due to hybrid analog-digital circuitry, aged electrolytic capacitors, and proprietary backplane bus protocols. DriveKNMS applies the following test protocol to all SPEEDTRONIC modules: