Model Interpretation

5501: Unified series coding of MicroNet rack plug-in power supply & functional board;

467: High-voltage single power supply variant, 220VAC/DC wide-range input, high-current 5VDC output specification, simplex exclusive power source without redundant parallel function.

Technical Specifications

Electrical & Mechanical Parameter

Input Range: 180~264VAC (47~63Hz) / 220VDC high voltage dual input; hold-up time ≥7ms@225VDC

Output Rating: 5VDC regulated power, max output 32A@55℃, 28A@60℃, 22A@65℃

Power Consumption: Rated 135W full-load operation

Ambient Condition: Operating -20℃~+70℃, storage -40℃~+85℃, 5%~95%RH non-condensing

Dimension & Weight: Standard 6U plug-in card 250×76×265mm, net weight≈2.32kg, metal shielding shell

Certification: UL, CE, SIL2 safety certification, Class I Div.2 hazardous site approval

Internal Hardware

Built-in EMI filter, isolated switching power circuit, overvoltage/overcurrent/short-circuit protection circuit, onboard power monitoring chip for real-time output voltage detection.

Interface and Communication Configuration

Front Panel Terminals: High-voltage input terminal block for 220V AC/DC field power wiring; 3pcs LED indicators: Power OK, Fault, Overload alarm lamp

Rear Side: Gold finger backplane connector, dock MicroNet chassis internal power bus to distribute 5VDC power to all slot modules inside rack, no external communication port.

Core Function

System centralized power conversion: Convert on-site industrial 220V power to stable 5VDC logic power to supply full set CPU, communication and I/O modules inside control rack.

Multi-layer fault protection: Automatically cut off output under overvoltage, overcurrent, short-circuit and overtemperature conditions, trigger front fault LED alarm to avoid downstream control board burnout.

Backplane power bus distribution: Uniform power transmission via chassis backplane bus, ensure synchronous power supply for all plug-in modules of MicroNet system.

Operating status self-inspection: Real-time monitor input voltage fluctuation and output load change, store abnormal fault record inside module for maintenance inquiry.

Applicable Scenarios

Steam/gas turbine genset MicroNet simplex control cabinet, petrochemical compressor driving prime mover single-set control rack, waste heat power generation unit non-redundant governing system, supporting 505/505E governor and ProTech overspeed protection equipment.

Operation and Maintenance Instructions

Install dedicated power slot of MicroNet simplex rack, forbid installation adjacent to high-power contactor/inverter to prevent input voltage surge damage.

Annual maintenance: Clean front wiring terminal and backplane golden finger dust with dry compressed air, check input cable crimp tightness to avoid loose wiring leading to power dropout.

Abnormal troubleshooting: Power lamp off firstly inspect field 220V input power; overload alarm check internal rack module short-circuit fault one by one; fault light constant bright replace original 5501-467 spare part directly.

Module replacement: Cut off cabinet front high-voltage power supply before plugging/unplugging; new module put into service directly without parameter programming after installation.