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The GE DS200SDCIG1A DS200SDCIG1AFB multi input/output instrument board combines analog and digital I/O functions. This board serves as a versatile interface between field devices and the Mark V controller. You will find this I/O board in turbine control cabinets and process monitoring panels. Its mixed-signal design reduces the number of required boards.
Mixed I/O Architecture
This multi I/O board provides eight analog inputs for process measurements. Consequently, it handles pressure, temperature, and flow transmitters simultaneously. The GE DS200SDCIG1A DS200SDCIG1AFB also includes eight configurable digital channels. Moreover, a high-resolution ADC ensures accurate signal conversion. You can configure each channel independently for different sensor types.
Technical Specifications
| Parameter | Value |
|---|---|
| Analog Inputs | 8, differential, 16-bit resolution |
| Analog Input Ranges | 0-10V, ±10V, 0-20mA, 4-20mA, RTD, thermocouple |
| Digital I/O Channels | 8, configurable as input or output |
| Digital Input Voltage | 24V DC sink/source |
| Digital Output Type | Open collector, 24V DC, 0.5A max |
| Accuracy | ±0.1% of full scale (analog) |
| Sampling Rate | 100 Hz per analog channel |
| Dimensions | 220mm x 160mm x 35mm |
| Weight | 0.72 kg (1.59 lbs) |
| PCB Layers | 6 |
| Onboard Components | 1 ADC, 8 op-amps, 8 optocouplers, 8 drivers, 1 reference |
| Connector Count | 4 (analog input, digital I/O, power, backplane) |
| Status Indicators | 8 LEDs (digital I/O status) |
| Energy Storage | 1500 µF (power filtering) |
| Isolation Voltage | 1500V (field to logic) |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
Analog and Digital Integration
The unit includes a 16-bit ADC with programmable gain amplifier. Therefore, it accepts both high-level and low-level sensor signals directly. This board replaces the DS200SDCIG1AFB version without any calibration changes. Simply remove the old board and install this one. GE designed this I/O board for single-slot installation. Hence, it fits directly into existing Mark V rack positions.
Six PCB layers separate analog, digital, and power traces effectively. Four connectors handle all field wiring and backplane communication. The GE DS200SDCIG1A DS200SDCIG1AFB stores calibration constants in non-volatile memory. Accordingly, it retains settings even after power loss. Eight status LEDs show the state of each digital channel clearly.
Sensor Compatibility and Installation Guide
The board supports thermocouple types J, K, and T directly. You do not need external signal conditioners for most sensors. The GE DS200SDCIG1A DS200SDCIG1AFB works with RTDs, strain gauges, and pressure transmitters. Always use shielded cable for analog input wiring longer than 10 meters. Proper grounding of analog commons prevents measurement errors.
Digital outputs can drive relays, solenoids, and indicator lamps. Each output includes short circuit protection for reliability. The GE DS200SDCIG1A DS200SDCIG1AFB works with all GE Mark V control systems. Installation requires only a screwdriver for terminal connections. This board operates reliably in non-condensing environments only.