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In industrial control, the continuous operation of equipment and accurate data collection rely on the "stable, anti-interference" power supply of DC regulated power supplies. Issues in industrial environments such as dust, voltage fluctuations, and sudden load changes require power supplies to have anti-interference capabilities, wide input ranges, and overload protection. Below are 5 typical cases to explain the selection logic and value of DC regulated power supplies.

Case 1: CNC Machine Tool Spindle Drive – High Current Stability Ensures Precision

Scenario Pain Point: When the spindle adjusts speed (0-3000rpm), the servo motor current surges from 10A to 30A. Unstable power supply causes spindle speed fluctuation of ±5rpm, leading to workpiece dimensional deviation exceeding ±0.02mm.

Power Supply Selection: 36V/40A adjustable switching regulated power supply (e.g., Delta PMT series), parameters: voltage regulation accuracy 0.1%, response time ≤50μs, overcurrent threshold 35A.

Core Adaptation: High current meets peak demand, fast response suppresses fluctuations (≤50mV), and EMC filtering resists grid harmonics.

Result: Spindle speed fluctuation is controlled within ±1rpm, dimensional tolerance is reduced to ±0.005mm, and reject rate drops from 3% to 0.5%.

Case 2: PLC Control in Automated Production Lines – Anti-Interference Prevents Shutdowns

Scenario Pain Point: The PLC is connected to over 20 actuators and 10+ sensors. Grid voltage fluctuates (220V drops to 180V) due to the start/stop of high-power equipment, easily causing PLC power failure. A single shutdown results in a loss of approximately 5,000 yuan.

Power Supply Selection: 24V/10A wide-input industrial power supply (e.g., Mean Well RS-240-24), parameters: input voltage 85-264V, voltage regulation accuracy 0.5%, triple protection (overvoltage/overcurrent/overtemperature).

Core Adaptation: Wide input range handles grid fluctuations (output remains 24V±0.1V even with 160V input), 3kV isolation prevents interference, and 20% power margin is reserved for peak loads.

Result: PLC shutdowns decrease from 12 times/year to 0, and equipment availability reaches 98.5%.

Case 3: Industrial Sensor Data Acquisition – Low Ripple Ensures Accurate Signals

Scenario Pain Point: For pressure sensors (4-20mA signal) used in chemical storage tank level monitoring, power supply ripple >10mVp-p causes measurement error of ±5mm, exceeding the allowable error of ±2mm.

Power Supply Selection: 12V/5A high-precision linear power supply (e.g., GW Instek GPR-1850HD), parameters: ripple ≤2mVp-p, voltage regulation accuracy 0.05%, output impedance <0.1Ω.

Core Adaptation: Low ripple avoids signal interference, high voltage stability prevents signal drift, and an isolation module is added to block ground loop interference.

Result: Measurement error is reduced to ±1.5mm, and there are no false alarms caused by interference.

Case 4: Industrial Robot Joint Drive – Wide Temperature & Overload Adaptation to Harsh Environments

Scenario Pain Point: Robots in automotive welding workshops (-10℃ to 50℃) have joint motor current surging from 8A to 15A when load changes from 5kg to 20kg. Poor low-temperature startup and slow overload protection easily lead to failures.

Power Supply Selection: 48V/20A wide-temperature industrial power supply (e.g., Omron S8VK-G series), parameters: operating temperature -20℃ to 60℃, overload response time ≤100μs, low-temperature compensation.

Core Adaptation: Wide-temperature design ensures stable startup/shutdown, fast overload protection prevents damage to the driver board, and voltage fine-tuning compensates for long-cable losses.

Result: Low-temperature startup success rate increases from 85% to 100%, and there are no joint drive failures.

Case 5: AGV Navigation System – Integrated Charging & Discharging Reduces Costs

Scenario Pain Point: AGVs in smart warehouses need 24-hour operation. Traditional solutions require separate chargers, and navigation power consumption fluctuations (5A-15A) easily cause positioning deviation >10cm.

Power Supply Selection: 36V/20A integrated charging-discharging power supply (e.g., Huawei UPS5000-E), parameters: automatic mode switching, voltage regulation accuracy 0.3%, standby power consumption <5W.

Core Adaptation: Provides stable power for navigation during the day (positioning accuracy ≤3cm), and uses constant current-constant voltage charging at night (fully charges 50Ah batteries in 5 hours); low power consumption saves electricity costs.

Result: Navigation deviation rate drops from 8% to 1%, charging efficiency increases by 30%, and charger costs are saved.

Principles for Industrial Power Supply Selection

DC regulated power supplies are the "invisible cornerstone" of industrial control. Selecting the right power supply can reduce shutdown losses and improve precision and reliability.

KUAIQU is a brand focusing on the field of instrumentation and equipment. Its main products include DC regulated power supplies, professional digital microscopes, measuring meters, electric tools, etc., covering laboratory and industrial scenarios. It provides a one-stop purchasing option from basic tools to high-precision equipment.

Welcome to visit its official website: https://www.kuaiquinstrument.com/ to select the right product for you!