GE DS3800HIOA

Parameters

• Analog Inputs: 4 channels, 4–20mA (default) or 0–10V DC (jumper-configurable)

• Analog Outputs: 4 channels, 4–20mA (default) or 0–10V DC (jumper-configurable)

• Resolution: 12-bit ADC (inputs) / 12-bit DAC (outputs)

• Accuracy: ±0.1% of full scale (inputs and outputs)

• Input Impedance: 250Ω (current) / >1MΩ (voltage)

• Output Drive: 4–20mA into 750Ω max / 0–10V into 5kΩ min

• Isolation: 1500V RMS optical isolation (channel-to-backplane)

• Power: +5V DC @ 1.0A, +15V DC @ 0.3A (requires both rails)

• Scan/Update Rate: 100ms (inputs) / 100ms (outputs)

• Coating: Basic conformal coating (suffix A) – single-layer acrylic

• Temp Range: 0°C to +60°C

• Mounting: 6U VME Eurocard, single-slot

• Diagnostics: LED status per channel (input over-range/under-range, output fault/open-circuit)

Advantages & Features

• Hybrid I/O capability – 4 analog inputs + 4 analog outputs on a single board, saving cabinet space and reducing overall board count

• Versatile signal support – inputs and outputs independently configurable for 4–20mA or 0–10V, compatible with most industrial transmitters and actuators

• Isolated channels reduce ground loop interference and protect the backplane from field wiring faults

• Simple configuration – signal type selected via jumpers (no complex software setup)

• Basic A-grade coating provides light moisture and dust protection for indoor installations

• Front-panel LEDs for per-channel status (input over-range/under-range, output fault/open-circuit)

• Compatible with Mark IV backplanes and some VIe systems (with adapter)

Application Cases

• Turbine inlet guide vane (IGV) position control – reading 4–20mA position feedback and outputting 4–20mA to positioner/actuator

• Fuel gas pressure control – reading pressure transmitter and outputting to control valve positioner

• Steam pressure and flow control – reading transmitters and outputting to throttle or extraction valve positioners

• Lube oil pressure and temperature control – reading sensors and outputting to cooling water or bypass valves

• Retrofit projects replacing separate input and output boards with a single hybrid solution

Competitor Comparison

• vs. DS3800HIMA (input-only): HIOA offers outputs in addition to inputs, but fewer total channels (4 in/4 out vs. 8 differential inputs on HIMA)

• vs. DS3800HOMB (output-only): HIOA offers inputs and outputs in a single board, reducing board count vs. separate HIMA + HOMB

• vs. DS3800HSCB (high-speed analog): HIOA is standard speed (100ms), HSCB offers faster scanning for dynamic signals

• vs. ABB TB711 : ABB offers higher resolution (14-bit) and PROFIBUS/Modbus communication, but lacks hybrid I/O on a single board

• vs. Siemens 7MH410 : Siemens offers HART protocol support on some variants, but GE HIOA offers hybrid I/O in one slot

• vs. Woodward 8440-2015 : Woodward offers more flexible configuration software, but GE HIOA provides a compact hybrid solution

• vs. Honeywell 51304638 : Honeywell offers better long-term stability (±0.05%), but GE HIOA combines inputs and outputs

Selection Suggestions

• Critical: Confirm input and output signal types (4–20mA or 0–10V) before installation – jumpers must match your transmitters and actuators

• Verify your backplane provides both +5V and +15V – this board requires both rails

• Assess channel count – 4 inputs and 4 outputs are suitable for small to medium control loops; for larger applications, consider multiple boards or separate HIMA/HOMB boards

• Determine accuracy requirement – 0.1% is sufficient for most turbine control loops

• Evaluate environmental conditions – A coating is suitable for clean, dry indoor installations; upgrade to B/C/D/G/H if needed

• Order mating front connector (p/n may vary – confirm with GE)

• For critical applications, consider used/refurbished units with 90-day warranty

Precautions

• Critical: Do not exceed 30mA or ±30V on input channels – overvoltage may damage the ADC and isolation circuits

• Critical: Do not short-circuit output channels – outputs are protected but prolonged shorts may cause damage

• Critical: Use shielded twisted-pair cables for all analog inputs and outputs to avoid EMI – especially near VFDs or large transformers

• Ensure field power supply (+24V DC) for loop-powered transmitters is stable (if used)

• Basic A coating does not protect against humidity or corrosive gases – upgrade to B/C/D/G/H if your environment has moisture or chemicals

• Allow 30-minute warm-up before calibration

• Store in ESD-safe packaging – edge connector is static-sensitive

• Periodically verify input and output calibration every 2 years against a certified reference

• Do not hot-swap – Mark IV backplanes require power-off for insertion/removal

• If replacing separate input and output boards, verify wiring and pinout compatibility – HIOA may differ from HIMA/HOMB series in pin assignments