Metso D200136L

Technical Specifications

• Input Voltage Range: 115 VAC – 230 VAC, single-phase
• Input Frequency: 50 Hz / 60 Hz auto-detection
• Rated Output Voltage: 28 VDC
• Max Continuous Output Current: 9 A
• Output Power Rating: 252 W
• Isolation Grade: 2500 Vrms input-output isolation
• Operating Temperature Range: -10 °C ~ +50 °C
• Storage Temperature Range: -40 °C ~ +85 °C
• Humidity Tolerance: 5% – 95% relative humidity, non-condensing
• Vibration Resistance: 1.5 g (10–150 Hz per IEC 60068-2-6)
• Shock Resistance: 10 g (11 ms pulse per IEC 60068-2-27)
• Acoustic Emission Level: ≤ 32 dB(A) full load operation (D200136 base unit: ≤ 48 dB(A))
• Dimensions (W×H×D): 120 mm × 180 mm × 60 mm
• Net Weight: 1.3 kg
• Certifications: CE, UL 508, IECEx general industrial certification, low-noise acoustic compliance certification

Functional Features

1. Four-level hardware protection identical to D200136: overvoltage, overcurrent, short-circuit, overheat
2. Upgraded multi-stage LC low-pass EMC filter circuit to suppress high-frequency switching noise
3. Silent fluid-bearing brushless fan with variable speed curve optimized for low acoustic output
4. Vibration damping rubber pads installed between fan assembly and metal chassis to eliminate resonant noise
5. Front panel LED status indicators: Power OK, Fault, Overload
6. Parallel redundant power supply expansion support (max 4 units parallel)
7. Constant voltage output with ±0.3% full load regulation accuracy

Performance Parameters

• Voltage ripple: ≤ 60 mV peak-to-peak (50% reduction vs D200136 base model)
• Transient response recovery time: < 10 ms under 0–100% load jump
• Mean time between failures (MTBF): 305,000 hours at 25 °C ambient
• Load regulation deviation: ≤ 0.5% from 10% to 100% rated load

Material Composition

• Outer Enclosure: Cold-rolled SPCC steel plate, electrostatic anti-corrosion black coating, internal acoustic damping foam lining
• Internal Heat Sink: 6063 extruded aluminum alloy with noise-absorbing silicone pad mounting
• Circuit Substrate: FR-4 high-temperature flame retardant PCB (TG 170 °C) with additional noise suppression ferrite beads
• Power Semiconductor Components: Low-switching-noise silicon IGBT devices
• Terminal Blocks: PA66 flame retardant plastic, tin-plated copper conductive terminals
• Cooling Fan: Fluid-bearing silent axial fan with polyurethane vibration isolation frame

Structural Characteristics

• Identical rack-mount mechanical outline as D200136 for direct interchange installation
• Internal acoustic foam lining bonded to all inner chassis surfaces to absorb switching frequency noise
• Fan assembly suspended via elastic rubber dampers to block mechanical vibration transmission to cabinet frame
• Front ventilation grille with sound-absorbing honeycomb mesh structure
• Metal grounding lug at chassis bottom for unified system grounding
• Quick-release mounting clips for tool-free cabinet disassembly

Working Principle

Advantage Highlights

1. Pin-to-pin mechanical and electrical compatibility with D200136 for seamless replacement upgrade
2. Ultra-low acoustic emission meets control room noise limit standards (≤35 dB(A))
3. Enhanced EMC filtering reduces signal interference to adjacent analog I/O modules
4. Identical power output capacity and protection performance as base non-L version
5. Damping structure extends fan service life by 20% compared to standard fan assembly
6. No additional wiring or cabinet modification required during field replacement

Applicable Industries

Model Series Affiliation

Installation Requirements

1. Install on standard 19-inch industrial DIN rack cabinet with minimum 20 mm vertical clearance above and below unit for heat dissipation
2. Cabinet ambient temperature must not exceed 50 °C; external forced cooling fan required for continuous operation above 45 °C
3. Connect chassis grounding lug to cabinet protective earth with 4 mm² copper wire
4. Input wiring must use 1.5 mm² minimum cross-section insulated copper cables; output wiring minimum 2.5 mm² copper cables
5. Maintain minimum 10 cm distance between unit and analog signal acquisition modules to maximize noise reduction effect
6. Tighten terminal block screws to torque value 0.8 N·m using calibrated torque screwdriver

Operation & Maintenance Precautions

1. Disconnect main AC input power before opening enclosure cover for inspection or maintenance
2. Clean ventilation honeycomb mesh filter every 3 months to prevent dust blockage causing overheating shutdown
3. Avoid operating in environments with conductive metal dust, corrosive acid/alkaline vapor or explosive gas mixtures
4. Do not remove internal acoustic damping foam lining during maintenance; foam damage invalidates low-noise performance
5. Replace silent fluid-bearing fan every 5 years to avoid fan stall-induced overheat faults
6. Store spare units in dry constant-temperature warehouse with humidity controlled below 60%