GE DS200 DS215 Modules DS200SLCCG3ACC DS215DENCG3AZZ01A PC Board

Technical Dossier

Product Details And Specifications

GE DS200 / DS215 Series Technical Notes

The Evolution of DS200 / DS215 Architecture

The DS200 series was introduced as part of GE's Mark V Speedtronic turbine control system in the early 1990s, replacing the earlier Mark IV discrete-logic architecture with a distributed, microprocessor-based control topology. Each functional module occupies a dedicated slot in the , , or controller panel, with triple-redundant voting logic applied to critical I/O channels. The DS215 sub-series emerged as board-level revisions incorporating updated ASIC components, improved EMI shielding, and extended temperature tolerance, while maintaining full backward compatibility with DS200-generation backplanes and firmware revisions.

With the introduction of Mark VI (IS200 series) and Mark VIe (IS420 series) platforms from the mid-2000s onward, GE formally transitioned new turbine installations away from DS200/DS215 hardware. As of 2026, the entire DS200/DS215 product line is classified as End-of-Life (EOL) by GE Vernova. No new production runs are scheduled. Field replacements rely entirely on surplus inventory, refurbished units, and authorized third-party repair channels. Compatibility between DS200 and DS215 part numbers is board-specific and must be verified against the turbine's application software revision and I/O configuration file before installation.

DS200 / DS215 Full Catalog & Functionalities (SKU List)

The following part numbers represent verified, commonly sourced modules within the DS200 and DS215 series. Each entry reflects the module's primary functional role within the Mark V / EX2100 / LCI control architecture.

Controllers & Processor Boards

• DS200SLCCG3ACC: Slave I/O Controller Card — manages distributed I/O communication between the master controller and field terminal boards in Mark V LCI systems.
• DS215DENCG3AZZ01A: Digital Encoder Interface Board — processes speed and position feedback signals from magnetic pickup units and optical encoders for turbine shaft monitoring.
• DS200TCQCG1A: Turbine Control Quad-Core Processor Board — primary CPU module for Mark V , , redundant controller panels.
• DS200TCDAG1A: Turbine Control Diagnostic Board — handles internal diagnostics, watchdog timing, and inter-panel communication arbitration.
• DS200TCCAG1A: Turbine Control Communication Adapter — manages serial and Ethernet gateway functions between the Mark V panel and plant DCS/SCADA networks.

Analog I/O Modules

• DS200IOCAG1A: I/O Controller Analog Board — provides 16-channel analog input acquisition (4–20 mA / 0–10 V) for process variable monitoring.
• DS200AAHAG1A: Analog Input High-Accuracy Board — precision thermocouple and RTD signal conditioning for exhaust temperature arrays.
• DS200AAIAG1A: Analog Input Isolation Board — galvanically isolated analog input module for high-common-mode voltage environments.
• DS215AAHAG1AZZ01A: Revised Analog Input High-Accuracy Board — DS215-generation replacement for DS200AAHAG1A with updated ADC resolution.
• DS200AOAAG1A: Analog Output Board — 8-channel 4–20 mA output module for valve positioner and actuator control loops.

Digital I/O Modules

• DS200DIOAG1A: Digital I/O Board — 32-channel discrete input/output module for contact sensing and relay drive applications.
• DS200DIDAG1A: Digital Input Diagnostic Board — monitors contact wetting voltage and input state integrity for protective relay interfaces.
• DS215DIDAG1AZZ01A: Revised Digital Input Diagnostic Board — DS215-generation update with enhanced noise immunity on 125 VDC input circuits.
• DS200DODAG1A: Digital Output Driver Board — high-current relay output module for solenoid valve and trip circuit actuation.

Communication & Network Adapters

• DS200TCCBG1A: Turbine Control Communication Board B — secondary communication module supporting Modbus RTU and GE proprietary ARCNET protocols.
• DS200EXPSG1A: Expansion Power Supply Board — auxiliary 5 VDC / 24 VDC regulated supply for I/O expansion racks in large turbine panel configurations.
• DS215EXPSG1AZZ01A: Revised Expansion Power Supply Board — DS215-generation replacement with improved thermal management and short-circuit protection.

Power Supply Modules

• DS200PSDAG1A: Power Supply Distribution Board — distributes regulated DC bus voltages to all modules within a single Mark V controller panel.
• DS200PSMAG1A: Power Supply Monitor Board — monitors input AC voltage, DC rail integrity, and generates panel-level power fault alarms.