GE DS200TCCAG1BAA TCCA TC2000 Common Analog I/O Board

Description

Hardware & Electrical Specifications

‑ Manufacturer: GE General Electric ‑ Compatible System: Speedtronic Mark‑V Turbine Control, TC2000 drive platform ‑ Functional Acronym: TCCA (TC2000 Common Analog I/O Board) ‑ On‑Board Processor: Intel 80196 microprocessor ‑ Memory: PROM modules for firmware storage ‑ Signal Types Handled:  • 4‑20 mA analog loop inputs  • RTD and thermocouple sensor signals  • Tachometer speed feedback inputs  • Precision analog voltage/current outputs for actuators and metering ‑ Connectors: 2 ×50‑pin ribbon‑cable headers (JCC, JDD), VME P1 bus connector, 3PL data bus interface ‑ On‑Board Jumpers: Configurable jumpers for signal mode and hardware setup. All jumper positions must be exactly duplicated during replacement ‑ Indicator: Diagnostic status LED for power, communication and fault indication ‑ PCB Finish: Conformal coated multilayer FR‑4 PCB ‑ Compatibility Restriction: Works only for Mark‑V / TC2000 systems; not compatible with Mark‑VI / Mark‑VIe control racks. Firmware PROM revision must match system configuration.

Environmental Specifications

‑ Operating Temperature: 0 °C ~ +60 °C ‑ Storage Temperature: −40 °C ~ +85 °C ‑ Relative Humidity: 5%‑95 % non‑condensing ‑ Installation Environment: VME control rack interior, Pollution Degree 2 ‑ EMC: Designed for power‑plant cabinet EMI and switching‑transient conditions

Mechanical Data

‑ Physical Dimension: approx 260 mm × 165 mm ‑ Mounting: Standard VME slot installation within Mark‑V core rack ‑ Weight: approx 0.82 kg

Core Functions

1. Analog signal conditioning & acquisition: Receives and conditions field analog signals from process transmitters, temperature sensors and tachometers, converts analog readings to digital values for turbine control algorithms.
2. Analog output generation: Produces accurate analog drive signals to position actuators and drive local metering devices.
3. Local processing & data communication: On‑board microprocessor executes signal processing, exchanges data with core controllers via VME bus and 3PL data link.
4. Firmware maintainability: PROM modules support firmware version matching and field upgrade without replacing the whole board.
5. Fault diagnostic indication: On‑board LED provides quick visual status check for commissioning and troubleshooting work.

Installation, Replacement & Critical Warnings

1. Complete system power‑down and lock‑out procedure required before servicing. Non‑hot‑swappable. ESD wrist‑strap protection is mandatory when handling the PCB assembly.
2. Record all original jumper positions and confirm PROM firmware revision before removing the original board. Mismatched firmware or incorrect jumper configuration will lead to signal errors or system malfunction.
3. Secure VME edge connector and all ribbon‑cable header connections firmly. Poor contact causes intermittent signal faults.
4. After power restoration, perform full loop‑check: verify analog input readings, analog‑output drive levels and status LED operation.

5. Common failure mode: Analog circuit damage may be triggered by field‑side surge events; check related termination boards when this board reports abnormal signal values.