GE DS3800HIOD1G1G

Parameters

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

• Analog Outputs: 8 channels, 4–20mA (default) or 0–10V DC (jumper-configurable)

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

• Accuracy: ±0.065% of full scale (G1 improved over C1’s ±0.07%)

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

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

• Filtering: 50Hz/60Hz adaptive noise rejection with enhanced drift monitoring and output load diagnostics (G1 feature)

• Isolation: 2500V RMS optical isolation (channel-to-backplane)

• Power: +5V DC @ 1.0A, +15V DC @ 0.35A (higher due to 8 output channels)

• Scan/Update Rate: 55ms (inputs, G1 optimized) / 55ms (outputs)

• Coating: Heavy conformal coating (suffix G) – multi-layer acrylic with enhanced chemical and moisture resistance (superior to E)

• Temp Range: -20°C to +75°C (widest range, enabled by G coating)

• Mounting: 6U VME Eurocard, single-slot

• Diagnostics: Enhanced onboard with per-channel LED status, signal noise detection, drift monitoring, output load monitoring, calibration alerts, and predictive maintenance indicators (G1 feature)

Advantages & Features

• Higher output density – 8 analog outputs + 4 analog inputs on a single board, providing more actuation channels than HIOA (4 in/4 out) and HIOB (8 in/4 out)

• Hybrid I/O capability – combines inputs and outputs on one board, saving cabinet space

• G1 firmware offers improved accuracy (±0.065%), faster update (55ms), adaptive 50/60Hz filtering, enhanced drift monitoring, output load diagnostics, and predictive maintenance

• Higher isolation (2500V) protects against ground loops and transient surges

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

• G-grade coating provides excellent resistance to humidity, salt spray, and mild chemical exposure – suitable for coastal, offshore, and industrial environments

• Widest temperature range (-20°C to +75°C) among HIO variants

• Front-panel LEDs for per-channel status including output load faults, drift alerts, and predictive maintenance warnings

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

Application Cases

• Multi-actuator control systems – controlling multiple turbine valves (IGV, fuel, steam, bypass) in offshore or coastal environments

• Fuel gas pressure and flow control – multiple control valve positioners with limited feedback sensors in salt spray exposure

• Steam pressure, flow, and temperature control – multiple valve positioners for throttle, extraction, and reheat lines in challenging industrial environments

• Lube oil temperature and cooling control – multiple cooling water or bypass valve actuators with output load monitoring

• Retrofit projects upgrading from lower-grade coatings or firmware for superior performance and environmental protection

Competitor Comparison

• vs. DS3800HIOD1G1E (E coating): Superior moisture and chemical resistance (G vs. E), wider temp range (-20°C vs. -15°C, +75°C vs. +72°C) – otherwise identical specifications

• vs. DS3800HIOD (standard D variant): Substantially improved accuracy (±0.065% vs. ±0.1%), faster scan (55ms vs. 100ms), higher isolation (2500V vs. 1500V), G1 diagnostics, G coating, and wider temp range

• vs. DS3800HIOA1C1E (A/C1/E variant): More outputs (8 vs. 4), better accuracy, faster update, G1 diagnostics, and superior G coating (vs. E)

• vs. DS3800HIOB1H1G (B/H1/G variant): HIOD1G1G offers more outputs (8 vs. 4) but fewer inputs (4 vs. 8), with lower accuracy (±0.065% vs. ±0.06%), slower scan (55ms vs. 50ms) – HIOB is higher-spec but output-heavy HIOD may suit specific applications; both have G coating

• vs. DS3800HIMA1C1D (input-only C1/D): HIOD1G1G offers outputs in addition to inputs and higher accuracy, but fewer inputs (4 vs. 8 differential)

• vs. DS3800HOMB (output-only): HIOD1G1G offers inputs in addition to outputs, but fewer total outputs (8 vs. typically 16 on output-only boards)

• vs. ABB TB711 : ABB offers higher resolution (14-bit), but HIOD1G1G offers hybrid I/O with output-heavy configuration, higher isolation (2500V vs. 1500V), G1 predictive diagnostics, and superior G coating

• vs. Siemens 7MH410 : Siemens offers HART protocol support, but GE offers hybrid I/O with higher output density, superior accuracy, and G-grade environmental protection

• vs. Woodward 8440-2015 : Woodward offers more flexible configuration software, but GE HIOD provides a compact hybrid solution with higher accuracy, G1 diagnostics, and superior G coating

• vs. Honeywell 51304638 : Honeywell offers similar long-term stability, but GE HIOD1G1G offers hybrid I/O (4 in/8 out vs. input-only on Honeywell), higher output density, and G coating

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 with sufficient current capacity (+5V @ 1.0A, +15V @ 0.35A)

• Assess channel mix – this board is ideal for applications requiring more actuator outputs (8) than sensor inputs (4)

• Evaluate if G1’s output load monitoring and predictive maintenance diagnostics are beneficial – particularly valuable for critical valve control loops

• Determine accuracy requirement – 0.065% is sufficient for most turbine control loops

• Evaluate environmental conditions – G coating is suitable for salt spray, frequent humidity, and mild chemical exposure; choose H coating for the most extreme conditions

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

• For critical applications, purchase with a calibration certificate and 12-month 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: Monitor output load – outputs are rated for specific loads; exceeding the rating may cause overheating or failure

• Critical: Use shielded twisted-pair cables for all analog inputs and outputs to avoid EMI – G1’s adaptive filtering helps but is not a substitute for good wiring practices

• Critical: G1 predictive maintenance diagnostics require a stable reference and proper warm-up – allow 45–60 minutes before relying on advanced diagnostics

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

• G1 firmware offers adaptive 50/60Hz filtering – configure jumpers correctly for your region’s line frequency

• G coating provides excellent protection but is not suitable for direct immersion, heavy chemical spills, or continuous condensation – consult GE for extreme conditions

• Allow 45–60 minute warm-up before calibration (G coating affects thermal equilibrium)

• 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 – HIOD may differ from HIOA/HIOB series in pin assignments

• G coating may make component-level repairs difficult – consider board replacement instead of repair