HIMA PS100023001

Working Principle

1. Single-phase 230VAC industrial mains input passes dual independent EMI filter and rectifier channels
2. Two separate DC-DC conversion branches operate in parallel current-sharing mode
3. Built-in safety watchdog continuously compares voltage, current and temperature of both power channels
4. If one channel fails, the second channel instantly carries full rated load without power interruption
5. Output voltage monitoring circuit cuts off power within 10ms if output deviates beyond safety threshold
6. Fault diagnosis contact transmits power supply abnormal status to safety PLC logic for system interlock alarm

Comprehensive Technical Specifications

• Nominal AC Input: 230 VAC single phase, tolerance 180–264 VAC, 50/60Hz
• Rated DC Output: 24 VDC, 40 A maximum continuous safety output current
• Total Output Power: 960 W SIL3 safety rated power
• Output Voltage Tolerance: ±1% under full load steady state
• Safety Integrity Level: SIL3 per IEC 61508, PFDavg < 10⁻⁷ per hour
• Hardware Fault Tolerance: HFT=1 (single channel fault will not cause full power loss)
• EMC Compliance: EN 61000-6-2 industrial heavy interference environment standard
• Operating Temperature Range: -20°C ~ +60°C ambient
• Storage Temperature: -40°C ~ +85°C
• Relative Humidity: 5%–95% non-condensing
• Protection Functions: Overvoltage, overcurrent, over-temperature, input phase loss, channel cross-fault monitoring
• Insulation Class: Reinforced isolation input to output, test voltage 5000 VAC
• MTBF Safety Calculation: 220,000 hours at 25°C rated load

Material & Structural Features

1. Main Housing: Galvanized steel sheet enclosure with corrosion-resistant powder coating
2. Dual Independent Power Circuit Boards separated by metal shielding partition
3. Heat Dissipation: Large extruded aluminum heat sink with low-speed temperature-controlled cooling fan
4. Safety Terminal Blocks: Lockable screw terminals with touch-safe insulating shroud, gold-plated high-current contacts
5. Internal Safety Components: Class 1 safety-rated capacitors, redundant power semiconductors, dual watchdog microcontrollers
6. Mounting Standard: 19-inch rack-mount 3U chassis, compatible standard industrial control cabinet racks
7. Status Indication: Front panel LED indicators for power OK, channel A fault, channel B fault, over-temperature alarm

Core Functional Advantages

1. Dual redundant power conversion architecture achieves fault-tolerant SIL3 safety performance for critical process safety loops
2. Cross-channel real-time fault detection with dry contact alarm output for upper safety system interlock
3. Wide temperature operating range for outdoor chemical plant, refinery and offshore platform control rooms
4. High transient voltage surge withstand resists factory grid switching spike interference
5. Load current sharing between two internal channels extends service life by evenly distributing power stress
6. Hot-swap compatible with identical PS1000 series units for non-stop system maintenance
7. Meets IEC 61511 process safety standard for oil, gas, chemical emergency shutdown systems

Official Application Scenarios

• Oil & gas refinery ESD emergency shutdown safety instrumented systems
• Chemical plant fire & gas detection and suppression safety control racks
• Power plant boiler, turbine safety interlock protection PLC power supply
• Offshore platform safety control cabinet SIL3-rated power feed
• Pharmaceutical batch production hazardous zone safety logic systems

Standard Installation Requirements

1. Install inside Class 1 division 2 explosion-proof control cabinet for hazardous area deployment
2. Maintain minimum 80mm vertical airflow clearance above and below unit rack
3. Input AC wiring must use separate isolated power supply from non-safety equipment mains
4. Output 24V DC safety circuit wiring strictly separated from non-sensor control wiring
5. Connect fault alarm dry contacts to HIMA safety PLC digital input channel for fault logging
6. Rack chassis bonded to cabinet safety earth bus with 6mm² copper ground conductor

Critical Operation & Maintenance Precautions

1. Only identical PS100023001 models can be paralleled for redundant system expansion
2. Do not mix SIL3 safety power supply with standard non-safety power modules on the same output bus
3. Conduct annual safety functional test to verify dual channel fault switchover performance
4. Replace cooling fan every 3 years to prevent over-temperature safety shutdown risk
5. Complete power discharge waiting period (10 minutes) before opening unit housing for internal inspection
6. Avoid parallel connection of non-safety load equipment to SIL3 safety output terminals