DS3800HLOA1D1A GE

Parameters

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

• Output Channels: 8 channels (specialized configuration)

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

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

• Response Time: <0.3ms (D1 optimized, fastest in HLO series)

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

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

• Diagnostics: Advanced onboard with per-channel LED status, short-circuit protection, open-wire detection, output current monitoring, load fault detection, fault logging, event timestamping, and predictive output monitoring (D1 feature)

• Specialized Features: Unique timing, sequencing, or fault handling per the “HLO” configuration

• 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 – the “HLO” variant offers unique timing, sequencing, or fault handling features not available on standard HLN boards

• Fastest output response (<0.3ms) – the fastest output response in the entire Mark IV HLO series, designed for the most extreme critical protection logic

• D1 firmware offers the most advanced diagnostics including fault logging, event timestamping, and predictive output monitoring – the most advanced firmware in the HLO series

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

• Short-circuit and load fault 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 clean indoor installations

• Front-panel LEDs for per-channel status, fault, output state, load fault alerts, and predictive maintenance warnings

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

Application Cases

• Specialized overspeed trip outputs – unique timing requirements for turbine overspeed protection with predictive output monitoring

• Flame detection outputs – fast fuel trip valve actuation with specialized fault handling, fault logging, and event timestamping

• Emergency trip systems (ETS) – critical output actuation with advanced diagnostics and post-event analysis

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

• Retrofit projects replacing specialized high-speed output boards in Mark IV systems with the highest level of diagnostics and performance

Competitor Comparison

• vs. DS3800HLOA (standard A variant): Faster response (<0.3ms vs. <0.5ms) and D1 advanced diagnostics – significant upgrade

• vs. DS3800HLNE1B1B (B1/B variant): Specialized HLO configuration with D1 diagnostics (vs. B1), but fewer channels (8 vs. 16) and A coating (vs. B) – choose based on specialization and diagnostics vs. density and coating

• vs. DS3800HLNF1D1B (D1/B variant): Similar D1 diagnostics and specialized configuration, but HLOA1D1A has A coating (vs. B) and fewer channels (8 vs. 16) – choose based on density and coating needs

• vs. DS3800HLND1C1C (C1/C variant): Specialized HLO configuration with D1 diagnostics (vs. C1), but fewer channels (8 vs. 24) and A coating (vs. C) – choose based on specialization and diagnostics vs. density and coating

• vs. DS3800HHTB1D1D (relay output): HLOA1D1A offers significantly faster response (<0.3ms vs. 12ms) – far superior for high-speed protection

• vs. DS3800HLCB (hybrid high-speed I/O): HLOA1D1A 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, fastest response, D1 advanced diagnostics, and better Mark IV integration

• vs. Siemens 6ES7 series: Similar functionality, but GE offers specialized configuration, significantly faster response, and D1 diagnostics

• vs. Woodward 5437 modules: GE offers specialized configuration, fastest response, D1 diagnostics, 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; obtain the exact firmware specification from the supplier

• 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; for higher density, consider HLNF or HLND variants

• Evaluate if D1’s predictive output monitoring, fault logging, and event timestamping are beneficial – particularly valuable for critical protection circuits where post-event analysis and predictive maintenance are essential

• 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, purchase with a calibration certificate and 12-month warranty

Precautions

• Critical: The “HLO” designation indicates 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 (<0.3ms) are extremely sensitive to inductive kickback from solenoids – use flyback diodes or surge suppressors across inductive loads to prevent damage; D1’s predictive monitoring helps identify developing faults but does not replace proper suppression

• 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

• D1 firmware diagnostics require proper configuration – ensure the load monitoring thresholds and predictive algorithms match your application

• 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