1. 서론
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the MEAN WELL RSP-750-24 Single Output Power Supply. The RSP-750-24 is a 751.2W power supply providing a 24V output at 31.3A, featuring a Power Factor Correction (PFC) function. Please read this manual thoroughly before using the product.
2. 안전 지침
경고: 감전 위험이 있습니다. 설치 및 서비스는 자격을 갖춘 전문가만 수행해야 합니다.
- Ensure the power supply is disconnected from the AC mains before any installation, wiring, or maintenance procedures.
- 입력 볼륨을 확인하세요tage range matches the specifications of the power supply.
- Do not operate the unit in environments with excessive moisture, dust, or extreme temperatures outside the specified range.
- Ensure proper ventilation to prevent overheating. The unit relies on air cooling.
- Connect the protective earth (FG) terminal to ground to prevent electric shock.
- 전원 공급 장치를 열지 마십시오.asing. 내부에는 사용자가 수리할 수 있는 부품이 없습니다.
3. 특징
- Universal AC input / Full range (85~264VAC).
- Built-in active PFC function, PF>0.97.
- High efficiency, up to 92%.
- 보호: 단락 회로 / 과부하 / 과전압tage / 과열.
- 출력 볼륨tage can be trimmed between 40 ~ 110% by 2 ~ 5.5VDC external control signal.
- Output current can be trimmed between 40 ~ 110% by 2 ~ 5.5VDC external control signal.
- Forced air cooling by built-in DC fan with speed control function.
- Built-in remote ON-OFF control.
- Built-in remote sense function.
4. 제품 오버view
The MEAN WELL RSP-750-24 power supply is designed for industrial and scientific applications, providing stable and reliable DC power.
그림 4.1: 전면 view of the RSP-750-24 power supply, showing the main casing 및 팬 그릴.
그림 4.2: 측면 view illustrating the input and output terminals, along with control connectors.
Figure 4.3: Product label showing model number, electrical ratings, and general dimensions.
5. 설치 및 설정
5.1 기계적 장착
The RSP-750-24 unit measures 9.84 x 5 x 1.61 inches (250 x 127 x 41 mm) and weighs 3.61 pounds. Ensure adequate space for air circulation, especially around the fan intake and exhaust. Mount the unit securely using appropriate fasteners. Refer to the mechanical drawing for detailed mounting hole positions.
Figure 5.1: Mechanical specifications and terminal layout. Note the air flow direction for proper cooling.
5.2 AC Input Connection (TB1)
Connect the AC mains power to the input terminal block (TB1) as follows:
- Pin 1: AC/L (Live)
- Pin 2: AC/N (Neutral)
- Pin 3: FG (Frame Ground)
Ensure all connections are tight and use appropriate wire gauges for the current rating. The unit accepts a universal AC input range of 85~264VAC.
5.3 DC Output Connection
Connect the load to the DC output terminals. The RSP-750-24 provides a 24V DC output. Observe correct polarity (+V and -V). Use appropriate cabling for the 31.3A output current.
5.4 Control Pin CN50 Connection
The CN50 connector provides various control and monitoring functions. Refer to the pin assignment table below and the detailed function descriptions for proper connection.
Figure 5.2: Detailed function description for each pin on the CN50 control connector, including a basic wiring diagram for the shorting connector.
CN50 Pin Assignment:
| 핀 번호 | 과제 | 기능 설명 |
|---|---|---|
| 1 | +S | Positive sensing. Connect to the positive terminal of the load. |
| 2 | +대 | 긍정적인 권tage trim signal. |
| 3 | -S | Negative sensing. Connect to the negative terminal of the load. |
| 4 | -대 | 음수tage trim signal. |
| 5 | PV | 외부 DC vol에 연결tag출력 볼륨에 대한 전자 소스tage trimming. |
| 6 | PS | Short connecting between PV (pin 5) and PS (pin 6) if output voltage TRIM function is not used. |
| 7 | PC | 외부 DC vol에 연결tage source for output current trimming. |
| 8 | PO | Short connecting between PC (pin 7) and PO (pin 8) if output current TRIM function is not used. |
| 9 | DC_확인 | Open collector signal, referenced to pin 10,11 (GND). Low when PSU turns on. |
| 10, 11 | 접지 | Reference ground for negative terminal (-V). |
| 12 | G-AUX | 보조 볼륨tage 출력 접지. |
| 13 | 켜짐/꺼짐 | Turns the output on and off by electrical dry contact between pin 13 (ON/OFF) and pin 14 (12V-AUX). |
| 14 | 12V-AUX | 보조 볼륨tage output (10.8~13.2V). |
5.5 Remote ON/OFF Function
The PSU can be turned ON/OFF by using the "Remote ON/OFF" function via CN50 pins 13 (ON/OFF) and 14 (12V-AUX).
- SW close (Short): PSU 켜짐
- SW open (Open): PSU 꺼짐
Figure 5.3: Wiring diagrams for Remote ON/OFF control and DC_OK signal monitoring.
5.6 Remote Sense Function
The remote sensing function compensates for voltage drop across the load wiring, ensuring accurate voltage at the load terminals. Connect +S (pin 1) to the positive load terminal and -S (pin 3) to the negative load terminal. Ensure sense lines are twisted in pairs to minimize noise pickup.
5.7 출력 볼륨tage 트림
출력 볼륨tage of the RSP-750-24 can be trimmed between 40% and 110% of its rated value (24V) using an external DC source (2-5.5VDC) connected between PV (pin 5) and GND (pin 10, 11) on CN50.
Figure 5.4: Diagrams illustrating the connections and characteristics for Output Voltage TRIM and Output Current TRIM functions.
5.8 Output Current Trim
The output current of the RSP-750-24 can be trimmed between 40% and 110% of its rated value (31.3A) using an external DC source (2-5.5VDC) connected between PC (pin 7) and GND (pin 10, 11) on CN50.
6. 운영
6.1 전원 켜기/끄기
Once all connections are secure and verified, apply AC input power. The unit will power on, and the fan will activate. To turn off the unit, remove AC input power or use the Remote ON/OFF function if configured.
6.2 DC_OK Signal Monitoring
The DC_OK signal (CN50 pin 9) is an open collector signal that indicates the output status of the PSU. It is low when the PSU output is within specification (ON) and high impedance when the PSU is off or in fault condition. This signal can be used for external monitoring or control systems.
- 0 ~ 1V: PSU 켜짐
- 3.3 ~ 5.6V: PSU 꺼짐
7. 유지관리
The RSP-750-24 power supply is designed for long-term reliability and requires minimal maintenance. However, regular checks can extend its lifespan and ensure optimal performance.
- 청소: Periodically inspect the fan and ventilation openings for dust accumulation. Clean with compressed air or a soft brush to ensure unobstructed airflow.
- 통풍: Ensure the operating environment maintains adequate air circulation around the unit. Avoid blocking the fan or air vents.
- 사이: Periodically check all input, output, and control wiring connections for tightness and signs of wear or corrosion.
8. 문제 해결
전원 공급 장치가 예상대로 작동하지 않으면 다음과 같은 기본 점검을 수행하십시오.
- 출력 없음tage:
- Verify AC input power is present and within the specified range (85-264VAC).
- Check all input and output wiring for correct connections and tightness.
- If using the Remote ON/OFF function, ensure it is configured correctly to turn the unit ON.
- Check for any short circuits or overloads on the output. Disconnect the load and test the power supply independently.
- 출력 볼륨tag전자 변동:
- Ensure the load is stable and not drawing intermittent current spikes.
- If Remote Sense is used, verify the connections are correct and secure.
- Check for proper ventilation; overheating can cause instability.
- 과열:
- 선풍기가 제대로 작동하고 있는지, 막힌 곳이 없는지 확인하십시오.
- 주변 온도가 지정된 작동 범위(-25°C ~ +70°C) 내에 있는지 확인하십시오.
- Ensure the load is not exceeding the power supply's rated output. Refer to the derating curve in the specifications section.
If issues persist after performing these checks, contact MEAN WELL technical support or your distributor for further assistance.
