ASTEC LPQ142 Industrial Power Supply (LPQ142-CF)
🔍 Core Product Information
Brand/Manufacturer: ASTEC (now part of Artesyn Embedded Technologies/Emerson)
Model: LPQ142 (specific version LPQ142-CF)
Origin: Philippines
Rated Power: 145W (Industrial-grade multi-output switching power supply)
Typical Applications: Universal AI component insertion machines, SMT industrial equipment (providing stable power supply for control boards and drive circuits)
📊 Key Electrical Parameters
Parameters Specifications Details
Input Voltage: 100-250V AC 3A / 120-370V DC 3A (Wide voltage input)
Frequency: 50/60Hz (compatible with 47-67Hz)
Output Configuration (LPQ142-CF): Multiple outputs: +5V/±12V / Adjustable auxiliary output, main +5V up to 25A
Protection Features Full output short-circuit protection, overload protection (110-145% load), overvoltage protection
Efficiency: Typical full-load efficiency ≥75%
Certifications: RoHS, CE, UL, CSA Level 3 power supply certification
⚙️ Features and Design Characteristics
Active PFC (Power Factor Correction): Meets IEC EN61000-3-2 standards, reducing grid harmonic interference and adapting to industrial equipment power supply requirements.
Forced Fan Cooling: Equipped with an axial fan to ensure cooling needs during long-term full-load operation, suitable for continuous production scenarios such as plug-in machines.
Multi-channel Isolated Outputs: Provides independent power supply for the device’s digital circuits, analog circuits, and drive modules, reducing signal interference.
Industrial-grade Reliability: Wide operating temperature range (0-50℃), vibration and shock resistant design, suitable for complex workshop conditions.
🛠️ Application and Maintenance Points
Compatible Equipment
Universal Single/Multi-Head AI Axial/Radial Insertion Machines (e.g., 6241, 6380, 4796 series)
Some SMT peripheral industrial control equipment (output pin definitions and voltage specifications need to be verified)
Common Faults and Troubleshooting
Table
Fault Phenomenon | Possible Causes | Troubleshooting Suggestions
No Output / Equipment Does Not Start | Fan failure, blown input fuse, abnormal +5V output on main circuit | First check if the fan is stuck/not spinning, then use a multimeter to measure the input/output voltage to confirm if it is damaged by overcurrent.
Intermittent Power Loss / Restart | Poor heat dissipation due to fan dust, short circuit at output load, aging capacitors | Clean the fan and heatsink, check if the output cable is short-circuited, and measure if the capacitor capacitance has decreased.
Unstable Output Voltage | Overload, feedback circuit failure, moisture-induced corrosion of potting compound | Disconnect part of the load to test the voltage, check the PCB board for corrosion marks, and replace the power supply if necessary.
📦 Procurement and Replacement Instructions
When procuring, verify the version suffix (e.g., LPQ142-CF) to ensure pin definitions match the original device.
For salvaged parts, test all output voltages, fan function, and load capacity beforehand to avoid equipment downtime due to power supply failure after installation.












