DS3800HLOA GE

Parameters

• Output Type: 24V DC discrete (transistor, sourcing or sinking configurable)

• Output Channels: 8 channels (typical for this series)

• Output Voltage: 24V DC (nominal), 10–30V DC range

• Output Current: 0.5A per channel (short-circuit protected)

• Response Time: <0.5ms (high-speed logic capability)

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

• Power: +5V DC @ 0.8A, +24V DC @ 0.3A (field power)

• Diagnostics: Advanced onboard with LED status per channel, short-circuit protection, open-wire detection, and specialized output monitoring

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

• Temp Range: 0°C to +60°C

• Mounting: 6U VME Eurocard, single-slot

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

Advantages & Features

• Specialized configuration – unique timing, sequencing, or fault handling features for critical protection applications

• Ultra-fast output response (<0.5ms) – designed for critical trip and protection logic

• 8-channel density provides sufficient outputs for specialized actuation needs

• Flexible output configuration – channels can be set as sourcing or sinking via jumpers

• Short-circuit protected outputs prevent damage from field wiring faults

• Isolated channels protect the backplane from field wiring faults and surges

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

• Front-panel LEDs for per-channel status, fault, and output state indication

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

Application Cases

• Specialized overspeed trip outputs – unique timing requirements for turbine overspeed protection

• Flame detection outputs – fast fuel trip valve actuation with specialized fault handling

• Emergency trip systems (ETS) – critical output actuation with advanced diagnostics

• Turbine start-up sequencing – specialized timing requirements for starter and purge valves

• Retrofit projects replacing specialized high-speed output boards in Mark IV systems

Competitor Comparison

• vs. DS3800HLNA (standard A variant): Specialized configuration may offer unique features not available on HLNA – HLOA is for specialized applications

• vs. DS3800HLNE (specialized E variant): Similar specialized configuration, but HLOA has A coating vs. E coating

• vs. DS3800HLNF1D1B (D1/B variant): HLOA offers specialized configuration but lacks D1 firmware features – choose based on specialization vs. advanced diagnostics

• vs. DS3800HHTB1D1D (relay output): HLOA offers significantly faster response (<0.5ms vs. 12ms) – better for high-speed protection

• vs. DS3800HLCB (hybrid high-speed I/O): HLOA is output-only with faster response – better for critical protection outputs

• vs. ABB DSDI series: Similar high-speed discrete capability, but GE offers specialized configuration and better Mark IV integration

• vs. Siemens 6ES7 series: Similar functionality, but GE offers specialized high-speed output configuration

• vs. Woodward 5437 modules: GE offers specialized configuration and optimized for Mark IV integration

Selection Suggestions

• Critical: Confirm the specialized configuration specifics – the “HLO” variant may have unique timing, sequencing, or fault handling features; standard documentation may not fully apply

• Critical: Confirm output configuration (sourcing vs. sinking) – jumper settings must match your field devices

• Critical: Confirm output load current – do not exceed 0.5A per output channel

• Verify your backplane provides both +5V and +24V field power with sufficient current capacity (+24V @ 0.3A)

• Assess channel count – 8 outputs are suitable for specialized applications

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

Precautions

• Critical: The “HLO” designation may indicate specialized configuration – do not assume standard HLN parameters apply; verify all specifications with the manufacturer or supplier

• Critical: Do not exceed 30V DC or 0.5A per output channel – overvoltage or overcurrent may damage the output transistors

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

• Critical: High-speed outputs are sensitive to inductive kickback from solenoids – use flyback diodes or surge suppressors across inductive loads to prevent damage

• Ensure field power supply (+24V DC) is stable and within 10–30V DC range

• Use properly sized wiring for output currents – undersized wires may cause voltage drop and overheating

• 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 commissioning

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

• Periodically verify output operation every 6 months (critical protection circuits require frequent testing)

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

• If replacing a similar specialized board, verify wiring and pinout compatibility – HLOA may differ from other HLN series in pin assignments