Selection Tips of AC/DC DIN Rail Power Supply for Industrial Control
CONTENTS
In light industry: ultra-thin, economical plastic case AC/DC DIN Rail power supply
Common heavy industry applications: efficient, miniaturized AC/DC DIN Rail power supply
Special heavy industrial applications: Highly reliable, high-performance AC/DC DIN Rail power supply
In industrial automation equipment such as PLC, frequency converter, servo driver, CNC (numerical control machine tools), industrial robots, etc., the main power supply is generally an AC/DC DIN Rail power supply. It can be installed directly in the control cabinet, which is convenient, fast, efficient, and reliable, ensuring the normal operation of the equipment. With the continuous development of the industrial control industry, the AC/DC DIN Rail power supply is becoming more and more diversified. Select the right AC/DC DIN Rail power supply, the power system design is equivalent to half done, so the selection of rail power supply is very important.
The operating environment for industrial control equipment is varied and complex. It includes both general and harsh indoor and outdoor environments. Therefore, it is crucial to select the appropriate AC/DC DIN Rail power supply based on the specific working conditions.
Mornsun economical AC/DC DIN Rail power supply LI/LIF series, with a power range from 75 to 960W, features high efficiency, high stability, good EMS performance, and compact size with standard DIN rail mounting (35mm). Additionally, the LI/LIF series offers optional products with both-side conformal coating (indicated by the suffix -QQ) for stable operation in harsh external environments. This series of power supplies is suitable for small chassis and narrow cabinets and can be widely used in automation equipment, machinery, and other industrial equipment that operates in harsh environments.
In light industry: ultra-thin, economical plastic case AC/DC DIN Rail power supply
PLC control systems are widely used in all kinds of industrial control equipment, and as well as in light industrial equipment. For example, PLC control systems of grain dryers/textile machines have relatively small power, simple internal composition, and application environment. However, due to the industry characteristics, there are certain requirements for space, vibration, and dust.
In the application case shown in the figure below, the Gird power input is connected to a 60W AC/DC DIN Rail power supply (such as the LI60-20B24PU) via a leakage circuit breaker, which can supply power directly to the PLC controller board, or then supply power to the CNC display via a 24V to 5V DC/DC module.
MORNSUN ultra-thin plastic case AC/DC DIN Rail LI-PU series is 8.7% smaller than similar mainstream products, making it suitable for compact chassis applications. It meets the requirements for 4000VAC high isolation voltage, high anti-interference, constant current limiting, over-current and over-voltage protection functions, and comes with a 3-year warranty, ensuring high reliability. The LI-PU series is an ideal choice for the main power supply of PLC systems in the light industry.
Common heavy industry applications: efficient, miniaturized AC/DC DIN Rail power supply
As companies continue to focus on cost reduction and efficiency, there is also a demand for cost reduction and miniaturization of power supplies for automation equipment such as industrial robots, control cabinets and machine tools.
In the application case shown in the figure below, the main power supply of the robot control box directly feeds the motors. During system startup, the motors require a very high current to start, which may cause the system to overload and fail to operate properly. This means the main power supply must have a certain peak load capacity. MORNSUN's LIF240-10BxxR2 features 150% peak load output for 3 seconds, which can meet the requirement of instantaneous overload. In addition, it not only has an ultra-slim design and an efficiency of up to 94%, but also has excellent performance such as active PFC, and compliance with OVC II, and IEC/UL/BS EN 62368, which is an ideal power supply for the robot control box.
Special heavy industrial applications: Highly reliable, high-performance AC/DC DIN Rail power supply
The petrochemical industry often faces extreme and harsh working environments such as high temperature, high pressure, noise, and vibration during the production process. There are safety risks of fire and explosion, as well as the generation of toxic and harmful substances, making it a high-risk industry. Therefore, the equipment and components are highly focused on their reliability. Taking the DCS of oil and gas refineries as an example, with the increasing complexity of refining processes, the demand for advanced safety control systems also increases, leading to stricter requirements for power supply reliability, safety certification, and performance.
It is recommended to select the Mornsun high-reliability AC/DC DIN Rail power supply LIHF480-23Bxx series. This series is powerful in performance, not only providing a continuous static power of 125%, and a 150% (PN) dynamic power for 5s, but also supporting ModBus communication protocol, remote control on/off function, and so on, which perfectly meets the demand of petrochemical industry for power supply‘s performance and safety.
The Enhanced high-reliability LIHF series features a vacuum plating case and double-sided conformal coating to meet ANSI/ISA 71.04-2013 G3 and achieve salt-spray proof, making it suitable for use in highly polluted environments. Furthermore, it is compliant with ATEX and IECEx explosion-proof certifications, has 2G anti-vibration capabilities, and has passed the 85°C high temperature and 85% high humidity test. In addition, the LIHF series has excellent EMC performance and complies with various international standards, including IEC/EN/UL/BSEN62368, IEC/EN/UL61010, EN61558, EN62477 and IEC60079. And offers a 5-year warranty.
MORNSUN AC/DC DIN Rail power supplies selection guide
Mornsun offers a wide range of AC/DC DIN Rail power supplies, ranging from 15W to 960W, to cater to a variety of user demands.
