Description
Emerson KJ2003X1-BB1
Technical Specifications
- AC Input Voltage: 100 VAC‑240 VAC universal industrial input
- Input Frequency: 50 Hz / 60 Hz auto‑detect
- DC Output: 24 VDC regulated
- Rated Output Current: 10 A continuous
- Operating Temperature: 0 °C to 60 °C under full load
- Storage Temperature: ‑40 °C to 85 °C
- Ambient Humidity: 5%‑95% non‑condensing
- Input‑to‑output isolation, compliant with industrial EMC standards
Functional Features Supports dual redundant parallel load‑sharing operation. Hot‑swap function enables online module maintenance. Integrated multi‑layer protection includes over‑voltage, under‑voltage lockout, over‑current limiting, short‑circuit shutdown and overtemperature thermal protection. On‑board monitoring circuits collect voltage, current and temperature data and send diagnostic events to DeltaV for alarm logging. Front‑panel tri‑color LED lamps show power status, running state and fault conditions. Internal EMI filters reduce mains surge and high‑frequency interference.
Application Scenarios Deployed inside DeltaV main control cabinets, remote I/O cabinets and SIS auxiliary power cabinets. Used in petrochemical refineries, natural gas processing plants, thermal power stations, GMP‑compliant pharmaceutical production lines, pulp and paper mills, water treatment facilities and metallurgy process workshops where control continuity is mandatory.
Performance Parameters
- Power conversion efficiency up to 90 %
- Output voltage fluctuation within ±1 % across no‑load to full‑load range
- MTBF higher than 50000 hours
- Microsecond‑level protection response upon short‑circuit or overload
- Bumpless redundant switchover with zero voltage drop
- Low‑ripple DC output for sensitive instrument hardware
Material Composition Housing uses high‑conductivity aluminum alloy for passive heat dissipation, with anti‑oxidation and anti‑corrosion surface treatment. Internal PCB is flame‑retardant industrial‑grade substrate. Power components include industrial electrolytic capacitors, power semiconductor switches and precision regulation chips. Terminals apply thick copper‑plated contact material. Structural plastic parts satisfy high‑temperature flame‑retardant industrial standards.
Structural Characteristics Vertical plug‑in rack form factor matching DeltaV cabinet backplane dimensions. Compact layout saves cabinet installation space. Integrated terminal block for AC input and DC output sits on upper section. Internal dedicated heat sink and air duct implement fan‑free passive cooling. Front panel has status LED indicators plus mechanical lock buckle against vibration‑caused loose contact. Power and monitoring circuits are physically partitioned to minimize internal electromagnetic crosstalk.
Working Principle Incoming AC power passes rectifier circuits and converts into raw direct current. Multi‑stage EMI filtering and voltage regulation produce stable 24 VDC fed to cabinet backplane. Under redundant parallel setup, two power supplies share total load equally. If one unit fails or overheats, the remaining working unit instantly takes 100 % of cabinet load without power break. On‑board monitoring chips continuously sample output voltage, working current and internal temperature. Once readings cross predefined thresholds, protection circuits activate and upload fault alarms to DeltaV operator station.
Installation Requirements Install vertically inside official Emerson DeltaV control cabinet. Inverted, horizontal or tilted mounting is forbidden. Keep sufficient upper‑and‑lower ventilation clearance; cables and other hardware cannot block cooling air passages. Power wiring must follow industrial voltage specifications. Protective earth wire shall fasten firmly onto cabinet grounding bus bar. Lock module buckle after insertion to avoid bad contact from long‑term site vibration. Do not mount in locations with heavy vibration, corrosive gas, conductive dust or condensation.
Use Precautions Disconnect corresponding AC supply before wiring, disassembly or maintenance work. Never operate beyond rated voltage and current limits. Periodically remove dust accumulated on shell and heat sink channels to prevent over‑temperature faults. Do not open module enclosure; tampering destroys insulation safety. Replace unit immediately when fault LED illuminates to preserve redundant reliability. Avoid frequent power‑cycling to extend service lifetime of internal power components.
