GE DS215TCQAG1BZZ01A TCQA Analog I O Signal Conditioning Board For Mark V Speedtronic Turbine Control System

Manufacturer: GE Vernova / GE Energy (Legacy GE Power)

Part Number: DS215TCQAG1BZZ01A (TCQA Analog Signal Processing Main Board, Mark V Series)

Product Type: Rack plug-in multi-channel analog I/O conditioning core board, installed in R1/R2/R3 triple redundant control core racks of Mark V turbine control

Matching Platform: GE Speedtronic Mark V gas/steam turbine control system, triple redundant TMR architecture, matched with various field terminal boards (vibration, LVDT, thermocouple, 4–20mA terminal blocks)

Core Function: Full-range analog signal scaling, isolation, filtering and A/D conversion; process LVDT servo valve feedback, thermocouple temperature, 4–20mA flow/pressure, vibration, generator PT/CT voltage/current, pulse speed signals; 12-bit high-precision analog-to-digital conversion; multi-layer surge & EMI suppression; on-board hardware jumpers for signal type configuration; front panel diagnostic LED array; multi-pin backplane connectors for inter-board data transmission; support triple redundant signal cross-check logic for turbine protection control

1. Product Overview

DS215TCQAG1BZZ01A (TCQA) is the core analog signal conditioning motherboard for GE Mark V Speedtronic heavy-duty turbine control systems, widely deployed in thermal power plant gas turbines, steam turbines and generator sets, serving as the central signal conversion hub between field sensors and the main turbine CPU core. It receives low-level weak analog signals from all field terminal boards, including LVDT servo valve position feedback, thermocouple temperature signals, 4–20mA pressure/flow transmitters, vibration displacement probes, generator voltage/current PT/CT secondary signals, and speed pulse signals. The board completes galvanic isolation, amplitude scaling, noise filtering, and 12-bit high-precision A/D sampling, then transmits standardized digital sampled data to the Mark V triple redundant TMR main control core for closed-loop fuel, speed, temperature and excitation regulation logic calculation. Equipped with 6×34pin + 2×40pin multi-row high-density connectors to realize interconnection with multiple signal terminal boards and core backplanes; six hardware jumpers on the board support flexible configuration of input signal types to adapt to different sensor wiring modes. A row of dedicated diagnostic LED indicators on the front panel displays channel overrange, hardware fault, communication link status for rapid on-site troubleshooting. Multi-stage surge absorption circuits and differential filter networks eliminate industrial electromagnetic interference and ground loop offset, effectively preventing signal drift and false turbine protection trips. Conformal coated PCB, wide-temperature industrial design, stable long-term operation in high-vibration, high-temperature control room environments. Cannot operate independently; must be installed in the R1/R2/R3 redundant core rack and matched with supporting terminal boards to complete full analog signal acquisition and conditioning. This module is a critical spare replacement part for legacy Mark V turbine control cabinets, used for unit overhaul, analog channel fault replacement and routine system maintenance.

2. Complete Technical Specifications

3. Core Hardware Advantages

4. Typical Application Scenarios