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The GE DS200ACNAG1A DS200ACNAG1ACC attached resource computer board provides analog I/O expansion for Mark V systems. This board adds measurement and control capabilities to the main processor. You will find this resource board in Speedtronic Mark V turbine cabinets. Its integrated design offloads analog processing from the main CPU.
Resource Board Architecture
This attached resource board features eight analog input channels with 16-bit resolution. Consequently, it handles precision measurements for turbine control algorithms. The GE DS200ACNAG1A DS200ACNAG1ACC also includes four analog output channels. Moreover, a dedicated microcontroller manages all signal processing locally. You can configure each channel independently through software.
Technical Specifications
| Parameter | Value |
|---|---|
| Analog Inputs | 8, differential, 16-bit resolution |
| Analog Input Ranges | 0-10V, ±10V, 0-20mA, 4-20mA (selectable) |
| Analog Outputs | 4, 0-10V or 4-20mA, 12-bit resolution |
| Accuracy | ±0.05% of full scale (inputs), ±0.1% (outputs) |
| Input Impedance | 1 MΩ (voltage mode), 250 Ω (current mode) |
| Sampling Rate | 100 Hz per channel |
| Local Processor | 32-bit, 50 MHz |
| Input Voltage | 24V DC ±10% |
| Power Consumption | 6W typical |
| Dimensions | 230mm x 170mm x 30mm |
| Weight | 0.62 kg (1.37 lbs) |
| PCB Layers | 6 |
| Onboard Components | 1 microcontroller, 1 ADC, 4 DACs, 12 op-amps |
| Connector Count | 3 (field I/O, backplane, diagnostic) |
| Status Indicators | 3 LEDs (power, active, fault) |
| Energy Storage | 1000 µF (analog supply filtering) |
| Isolation Voltage | 1500V (field to logic) |
| Communication | High-speed serial backplane |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
Local Processing and Signal Conditioning
The unit includes a dedicated microcontroller for local signal processing. Therefore, it reduces the main CPU’s workload significantly. This board replaces the DS200ACNAG1ACC version without any configuration changes. Simply remove the old board and install this one. GE designed this resource board for single-slot installation. Hence, it fits directly into existing Mark V rack positions.
Six PCB layers separate analog and digital signal paths effectively. Three connectors handle all field, backplane, and diagnostic signals. The GE DS200ACNAG1A DS200ACNAG1ACC includes programmable filters on analog inputs. Accordingly, it rejects 50/60 Hz noise from industrial environments. Three status LEDs indicate power, activity, and fault conditions clearly.
Configuration and Installation Guide
You can configure analog input ranges individually through software. No jumpers or hardware changes are required for setup. The GE DS200ACNAG1A DS200ACNAG1ACC works with all GE Mark V control systems. Always use shielded cable for analog wiring longer than 10 meters. Proper grounding of analog commons prevents ground loop errors.
The onboard processor handles scaling and linearization locally. This offloads these tasks from the main turbine controller. The GE DS200ACNAG1A DS200ACNAG1ACC delivers reliable analog I/O expansion for turbine systems. Installation requires only a screwdriver for terminal connections. This board operates in non-condensing environments with adequate clearance.