Description
Parameters
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Output Type: 24V DC discrete (transistor, sourcing or sinking configurable)
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Output Channels: 16 channels (higher density than HLNA’s 8)
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Output Voltage: 24V DC (nominal), 10–30V DC range
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Output Current: 0.5A per channel (short-circuit protected)
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Response Time: <0.5ms (hardware-accelerated)
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Isolation: 2500V RMS optical isolation (channel-to-backplane)
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Power: +5V DC @ 0.9A, +24V DC @ 0.35A (field power)
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Diagnostics: LED status per channel, short-circuit protection, and open-wire detection
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Coating: Basic conformal coating (suffix A) – single-layer acrylic
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Temp Range: 0°C to +60°C
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Mounting: 6U VME Eurocard, single-slot
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Compatibility: Mark IV backplanes and some VIe systems (with adapter)
Advantages & Features
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Higher channel density – 16 high-speed outputs on a single board, more than HLNA’s 8 channels
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Ultra-fast output response (<0.5ms) – designed for critical trip and protection logic
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Flexible output configuration – channels can be set as sourcing or sinking via jumpers
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Short-circuit protected outputs prevent damage from field wiring faults
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Isolated channels protect the backplane from field wiring faults and surges
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Basic A-grade coating provides light moisture and dust protection for clean indoor installations
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Front-panel LEDs for per-channel status, fault, and output state indication
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Compatible with Mark IV backplanes and some VIe systems (with adapter)
Application Cases
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Overspeed trip outputs – high-speed solenoid actuation for turbine overspeed protection with multiple trip channels
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Flame detection outputs – fast fuel trip valve actuation for burner management systems across multiple zones
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Emergency trip systems (ETS) – critical output actuation for emergency shutdown with high channel count
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Turbine start-up sequencing – fast-response output for starter, purge, and auxiliary valves
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Retrofit projects replacing multiple lower-density high-speed output boards with a single higher-density solution
Competitor Comparison
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vs. DS3800HLNA (standard A variant): More output channels (16 vs. 8) – HLNC1A1A offers higher density, otherwise similar A1 firmware and A coating
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vs. DS3800HLNA1D1A (D1/A variant): HLNC1A1A offers more channels (16 vs. 8) but lacks D1 firmware features – choose based on channel count vs. advanced diagnostics
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vs. DS3800HLNC (standard C variant): Similar specifications; A1 firmware may offer slightly improved response compared to standard
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vs. DS3800HHTB1D1D (relay output): HLNC1A1A offers significantly faster response (<0.5ms vs. 12ms) – better for high-speed protection
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vs. DS3800HLCB (hybrid high-speed I/O): HLNC1A1A is output-only with faster response than HLCB’s output response (<1.2ms) – better for critical protection outputs
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vs. DS3800HLIA (high-speed input): HLNC1A1A is the output counterpart – use both for complete protection I/O
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vs. ABB DSDI series: Similar high-speed discrete capability, but GE offers faster output response and higher density
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vs. Siemens 6ES7 series: Similar functionality, but GE offers faster response and higher channel density
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vs. Woodward 5437 modules: GE offers faster response and higher output density
Selection Suggestions
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Critical: Confirm output configuration (sourcing vs. sinking) – jumper settings must match your field devices (solenoids, valves, relays)
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Critical: Confirm output load current – do not exceed 0.5A per output channel
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Verify your backplane provides both +5V and +24V field power with sufficient current capacity (+24V @ 0.35A)
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Assess channel count – 16 outputs cover larger actuation applications with multiple high-speed outputs
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Evaluate environmental conditions – A coating is suitable for clean, dry indoor installations; upgrade to B/C/D/G/H if needed
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Order mating front connector (p/n may vary – confirm with GE)
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For critical protection applications, consider used/refurbished units with 90-day warranty or new-old-stock with calibration certificate
Precautions
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Critical: Do not exceed 30V DC or 0.5A per output channel – overvoltage or overcurrent may damage the output transistors
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Critical: Do not short-circuit output channels – outputs are protected but prolonged shorts may cause damage
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Critical: High-speed outputs are sensitive to inductive kickback from solenoids – use flyback diodes or surge suppressors across inductive loads to prevent damage
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Ensure field power supply (+24V DC) is stable and within 10–30V DC range
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Use properly sized wiring for output currents – undersized wires may cause voltage drop and overheating
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A1 firmware is a baseline revision – verify it supports your specific output configuration requirements
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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
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Allow 30-minute warm-up before commissioning
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Store in ESD-safe packaging – edge connector is static-sensitive
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Periodically verify output operation every 6 months (critical protection circuits require frequent testing)
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Do not hot-swap – Mark IV backplanes require power-off for insertion/removal
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If replacing multiple lower-density boards, verify wiring and pinout compatibility – HLNC may differ from HLNA in pin assignments

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