1. Introduction
The Mean Well SP-240-15 is a high-performance 240W single output power supply designed for various industrial and commercial applications. It features a universal AC input, built-in active Power Factor Correction (PFC) function, and forced air cooling by an integrated DC fan, ensuring reliable and efficient operation. This manual provides essential information for the safe installation, operation, and maintenance of your SP-240-15 power supply.
2. Safety Instructions
Please read and understand all safety instructions before installing or operating the unit. Failure to comply with these instructions may result in electric shock, fire, or damage to the product.
- Disconnect Power: Always ensure the AC input power is disconnected before performing any installation, wiring, or maintenance procedures.
- Proper Grounding: The unit must be properly grounded to prevent electric shock. Connect the FG (Frame Ground) terminal to earth ground.
- Qualified Personnel: Installation and servicing should only be performed by qualified and authorized personnel.
- Ventilation: Ensure adequate ventilation around the power supply. Do not block the fan or ventilation openings. Operating temperature range is -20°C to +70°C (refer to derating curve).
- Environmental Conditions: Do not operate the unit in environments with excessive moisture, dust, or corrosive gases.
- Output Load: Do not exceed the rated output power or current. Overloading may cause damage or reduce the lifespan of the unit.
- Internal Components: Do not open the power supply casing. There are no user-serviceable parts inside.
3. Product Overview
The Mean Well SP-240-15 power supply is designed for robust performance, featuring a durable metal enclosure and efficient cooling.
Key Features:
- Universal AC input / Full range (88 ~ 264VAC)
- Built-in active PFC function (PF>0.95 at 230VAC)
- Forced air cooling by built-in DC fan
- Protections: Short circuit, Overload, Over voltage, Over temperature
- 100% full load burn-in test for reliability
4. Setup and Installation
Proper installation is crucial for the safe and reliable operation of the SP-240-15 power supply.
4.1 Mechanical Installation
The unit should be mounted in a location that allows for adequate airflow around the fan and ventilation openings. Refer to the mechanical drawing for dimensions and mounting hole locations.
Dimensions: 199mm (L) x 99mm (W) x 50mm (H) (7.83 x 3.9 x 1.97 inches).
4.2 Wiring Connections
Connect the input and output wires to the terminal block as indicated on the unit's label and in the diagram below. Ensure all connections are secure and correct polarity is observed.
- AC Input: Connect the Live (L), Neutral (N), and Frame Ground (FG) wires to the corresponding terminals. The unit accepts universal AC input from 88 to 264VAC.
- DC Output: Connect the positive (+V) and negative (-V) load wires to the DC OUTPUT terminals.
- Voltage Adjustment: The output voltage can be adjusted using the '+V ADJ' potentiometer located near the output terminals. Use a small screwdriver for fine-tuning within the specified range (13.5V to 18V).
Terminal Pin Assignment:
- Pin 1: AC/L
- Pin 2: AC/N
- Pin 3: FG (Frame Ground)
- Pin 4: DC OUTPUT -V
- Pin 5: DC OUTPUT -V
- Pin 6: DC OUTPUT +V
- Pin 7: DC OUTPUT +V
5. Operating Instructions
Once properly installed and wired, the SP-240-15 power supply is ready for operation.
- Power On: Apply AC input voltage to the unit. The internal fan will start operating, and the output voltage will be present at the DC output terminals.
- Output Voltage Check: Verify the output voltage using a multimeter. Adjust the '+V ADJ' potentiometer if necessary to achieve the desired voltage within the 13.5V to 18V range.
- Load Connection: Connect your load to the DC output terminals. Ensure the load current does not exceed the rated 16A.
- PFC Function: The built-in active PFC function ensures high power factor and reduced harmonic distortion, optimizing energy efficiency.
6. Maintenance
The Mean Well SP-240-15 is designed for long-term reliability with minimal maintenance. However, periodic checks can help ensure optimal performance.
- Cleaning: Periodically inspect the unit for dust accumulation, especially on the fan and ventilation openings. Clean with a soft brush or compressed air to maintain proper cooling. Ensure power is disconnected before cleaning.
- Connection Check: Regularly check all input and output wiring connections to ensure they are secure and free from corrosion.
- Environmental Inspection: Verify that the operating environment remains within the specified temperature and humidity ranges.
7. Troubleshooting
If the power supply is not functioning as expected, refer to the following troubleshooting guide:
- No Output Voltage:
- Check if AC input power is present and connected correctly.
- Verify input fuse (if external) is intact.
- Ensure the unit is not in protection mode (e.g., due to overload or over-temperature). Disconnect power, wait a few minutes, and reapply.
- Output Voltage Too Low/High:
- Check the '+V ADJ' potentiometer setting.
- Ensure the load is not drawing excessive current, causing voltage drop.
- Unit Shuts Down:
- Overload Protection: If the load current exceeds 105-135% of the rated output power, the unit will enter hiccup mode and recover automatically once the fault condition is removed. Reduce the load.
- Over Voltage Protection: If the output voltage exceeds 17.25-20.25V, the unit will shut down. Re-power the unit to recover.
- Over Temperature Protection: If the internal temperature exceeds 80°C ±5°C, the unit will shut down. It will recover automatically once the temperature drops. Ensure proper ventilation.
- Fan Not Operating:
- The fan operates based on temperature. It may not run at low loads or cool ambient temperatures.
- If the unit is hot and the fan is not running, check for obstructions or fan failure.
If problems persist after following these steps, contact qualified service personnel.
8. Specifications
Detailed technical specifications for the Mean Well SP-240-15 power supply.
| Category | Parameter | SP-240-15 |
|---|---|---|
| OUTPUT | DC VOLTAGE | 15V |
| RATED CURRENT | 16A | |
| CURRENT RANGE | 0 ~ 16A | |
| RATED POWER | 240W | |
| RIPPLE & NOISE (max.) | 150mVp-p | |
| VOLTAGE ADJ. RANGE | 13.5 ~ 18V | |
| VOLTAGE TOLERANCE | ±1.0% | |
| LINE REGULATION | ±0.5% | |
| LOAD REGULATION | ±1.0% | |
| SETUP, RISE TIME | 600ms, 50ms/230VAC; 1500ms, 50ms/115VAC at full load | |
| HOLD UP TIME (Typ.) | 20ms/230VAC; 20ms/115VAC at full load | |
| INPUT | VOLTAGE RANGE | 88 ~ 264VAC; 124 ~ 370VDC |
| FREQUENCY RANGE | 47 ~ 63Hz | |
| POWER FACTOR (Typ.) | PF>0.95/230VAC; PF>0.98/115VAC at full load | |
| EFFICIENCY (Typ.) | 86% | |
| AC CURRENT (Typ.) | 3.6A/115VAC; 1.8A/230VAC | |
| INRUSH CURRENT (Typ.) | 25A/115VAC; 40A/230VAC | |
| LEAKAGE CURRENT | <3.5mA/240VAC | |
| PROTECTION | OVERLOAD | 105 ~ 135% rated output power. Protection type: Hiccup mode, recovers automatically after fault condition is removed. |
| OVER VOLTAGE | 17.25 ~ 20.25V. Protection type: Shut down o/p voltage, re-power on to recover. | |
| OVER TEMPERATURE | 80°C ±5°C (TSW1). Protection type: Shut down o/p voltage, recovers automatically after temperature goes down. | |
| ENVIRONMENT | WORKING TEMP. | -20 ~ +70°C (Refer to "Derating Curve") |
| WORKING HUMIDITY | 20 ~ 90% RH non-condensing | |
| STORAGE TEMP., HUMIDITY | -40 ~ +85°C, 10 ~ 95% RH | |
| TEMP. COEFFICIENT | ±0.03%/°C (0 ~ 50°C) | |
| VIBRATION | 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes | |
| SAFETY & EMC | SAFETY STANDARDS | UL60950-1, TUV EN60950-1 approved |
| WITHSTAND VOLTAGE | I/P-O/P:3KVAC; I/P-FG:1.5KVAC; O/P-FG:0.5KVAC | |
| ISOLATION RESISTANCE | I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25°C / 70% RH | |
| EMC EMISSION | Compliance to EN55022 (CISPR22) Class B, EN61000-3-2,-3 | |
| EMC IMMUNITY | Compliance to EN61000-4-2,3,4,5,6,8,11, EN55024, light industry level, criteria A | |
| OTHERS | MTBF | 284.9K hrs min. MIL-HDBK-217F (25°C) |
| DIMENSION | 199*99*50mm (L*W*H) | |
| PACKING | 0.8Kg; 16pcs/13.8Kg/0.04CUFT |
9. Warranty and Support
The Mean Well SP-240-15 power supply comes with a 3-year warranty from the date of purchase, covering defects in materials and workmanship under normal use.
For technical support, warranty claims, or service inquiries, please contact your authorized Mean Well distributor or reseller. Please have your product model number and purchase information available when contacting support.
