DS3800HLND GE

Parameters

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

• Output Channels: 24 channels (highest density in HLN 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 @ 1.0A, +24V DC @ 0.4A (higher due to more channels)

• Diagnostics: LED status per channel, short-circuit protection, and open-wire detection

• Coating: Conformal coating (suffix D) – medium-thickness acrylic with improved humidity and mild chemical resistance

• Temp Range: -15°C to +70°C (extended, enabled by D coating)

• Mounting: 6U VME Eurocard, single-slot

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

Advantages & Features

• Highest channel density in HLN series – 24 high-speed outputs on a single board, more than HLNA’s 8 and HLNC’s 16 channels

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

• 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

• D-grade coating provides superior moisture resistance and mild chemical protection – suitable for environments with frequent humidity or light chemical exposure

• Extended temperature range (-15°C to +70°C) offers more flexibility than B/C variants

• 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

• Overspeed trip outputs – high-speed solenoid actuation for turbine overspeed protection with maximum trip channels

• Flame detection outputs – fast fuel trip valve actuation for burner management systems across multiple zones in humid environments

• Emergency trip systems (ETS) – critical output actuation for emergency shutdown with highest channel count

• Turbine start-up sequencing – fast-response output for starter, purge, and auxiliary valves

• Retrofit projects replacing multiple lower-density high-speed output boards with a single highest-density solution

Competitor Comparison

• vs. DS3800HLNA (A variant): More output channels (24 vs. 8) and D coating – significant upgrade

• vs. DS3800HLNC (C variant): More output channels (24 vs. 16) and D coating – HLND offers higher density and better protection

• vs. DS3800HLNA1D1A (D1/A variant): More channels (24 vs. 8) but lacks D1 firmware features – choose based on channel count vs. advanced diagnostics

• vs. DS3800HLNC1B1B (B1/B variant): More channels (24 vs. 16), D coating (vs. B), but may lack B1 diagnostics – choose based on density vs. firmware features

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

• vs. DS3800HLCB (hybrid high-speed I/O): HLND is output-only with faster response than HLCB’s output response (<1.2ms) – better for critical protection outputs

• vs. ABB DSDI series: Similar high-speed discrete capability, but GE offers higher density, faster response, and D coating

• vs. Siemens 6ES7 series: Similar functionality, but GE offers faster response, highest channel density, and D-grade environmental protection

• vs. Woodward 5437 modules: GE offers highest output density, faster response, and D coating

Selection Suggestions

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

• 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 @ 0.4A)

• Assess channel count – 24 outputs cover the largest actuation applications with the most high-speed outputs

• Evaluate environmental conditions – D coating is suitable for frequent humidity and mild chemical exposure; choose G/H for more demanding conditions

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

• For critical protection applications, consider used/refurbished units with 90-day warranty or new-old-stock with calibration certificate

Precautions

• 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

• D coating provides good protection but is not suitable for direct salt spray, heavy chemical exposure, or continuous condensation – upgrade to G/H for those conditions

• Allow 30–45 minute warm-up before commissioning (D coating affects thermal equilibrium)

• 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 multiple lower-density boards, verify wiring and pinout compatibility – HLND may differ from HLNA/HLNC in pin assignments

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