Construction industry solutions
Odeli frequency converters provide stable electrical protection for industrial, commercial, and civil buildings with high-quality and intelligent products.
The application of Odeli frequency converter in cranes
1. Introduction to the plan
The Odeli variable frequency speed control solution ensures that the lifting mechanism does not slide at low speed and full load, and the large and small car mechanisms start and brake smoothly; The commonly used resistance energy consumption braking method for electrical braking is recommended, and a common DC bus energy feedback scheme can also be provided.
2. Advantages of the plan
*High safety: Reliable brake and contactor control timing, dedicated crane control function, ensuring safe and reliable operation of the crane.
*Simple and user-friendly: Integrating multiple crane specific functions can simplify design and improve on-site debugging efficiency;
*Small size, high maintenance: small size, high power density, saving installation space for customers; Independent air duct design and detachable fan for easy maintenance.
The application of Odeli soft starter in architecture
AC squirrel cage asynchronous motors are widely used in mechanical equipment due to their simple structure, convenient control, and high efficiency. Most mechanical equipment in civil buildings, such as fire pumps, sprinkler pumps, domestic pumps, refrigeration units, etc., are powered by AC squirrel cage asynchronous motors. When the building has a high number of floors or a large scale, the rated power of the motors of these mechanical equipment is usually high, such as the rated power of fire pumps, which is usually between 55kW and 150kW. These devices will generate a large starting current during the startup process, resulting in a large voltage. Therefore, selecting the appropriate starting method is of great significance in reducing power supply capacity and ensuring the reliability of building power supply. Therefore, the application of soft starters in the field of civil construction will have broad prospects.
As is well known, squirrel cage asynchronous motors have high starting current and long starting time when starting at full voltage. When the power of the motor is high, the starting current is high, which will cause a decrease in the voltage of the distribution system and affect the normal operation of other electrical equipment connected to the same transformer or power supply line. At the same time, due to the large starting torque, it will have an impact on the load, increase the wear of transmission components and additional maintenance. Therefore, when the motor capacity is large, step-down starting is adopted.
The Odeli soft starter has multiple functions such as soft start, soft stop, pump control, and timed low-speed operation. It has unparalleled advantages in power equipment control in the construction field compared to traditional step-down starters.
1. The pump control function: When the water pump starts and stops, the water flow impacts the pipeline, causing a serious "water hammer effect". Although some measures have been taken to eliminate the water hammer effect in the waterway, using a soft starter with pump control function can completely eliminate the water hammer effect, reduce the workload of mechanical maintenance, save system maintenance costs, and ensure reliable water supply.
2. Overload protection function: Generally, the overload protection of a motor is achieved through thermal components, which are difficult to avoid misoperation caused by the starting current of the motor during the starting process. To avoid accidental tripping, users often increase the operating current of thermal components, making overload protection virtually non-existent. The built-in overload protection function of the Odeli soft starter can select different tripping characteristic curves based on the weight of the starting load to avoid accidental tripping during the starting process. Due to its programmable overload protection, it provides users with greater flexibility, and choosing a soft starter with built-in overload protection function can eliminate thermal relays, making control cabinet wiring simpler and faster.
3. The parameter testing function can select and display the operating parameters of the motor in the display window by pressing the button. Such as three-phase voltage value, three-phase current value, power factor, operating time, etc., without the need for any additional instruments. This function allows users to conveniently query various parameters of the motor during operation.
Application of Motor Protectors in Cement Plants
With the increasing scale of modern cement industry production and the increasing scale of production equipment, the required power of the traction motor is also increasing. The production process of cement plants is relatively complex. Therefore, as the most commonly used unit in cement production, low-voltage electric motors have a large number and complex types. With the continuous progress of science and technology and the continuous improvement of process control processes, especially the requirements of automated production, it is urgent to develop and improve the control and protection equipment of electric motors to achieve functions such as remote control, telemetry, remote adjustment, fault diagnosis, and centralized control of the entire automated production process and large machinery.
The Odeli intelligent motor protector effectively protects industrial motor equipment, allowing the motor to fully utilize its overload capacity while improving the reliability of the electric drive system and the continuity of the production process.
The longer the service cycle and lifespan of the motor equipment used in the cement production line, the higher the economic value it brings to the enterprise. The application of the Odeli intelligent motor protector in the cement industry brings the following operational effects to the automated production process of cement:
(1) Centralized system information
In addition to being used for general power supply and distribution, the electrical design of cement plants also requires the completion of a large number of motor equipment drag control designs. After using the communication function of intelligent motor protectors for networking, users can read the parameters of various device nodes through the upper computer, such as three-phase AC current, three-phase AC voltage, motor operation status, motor energy, motor operation fault information, etc. Based on this information, engineers can achieve real-time analysis and processing of the operation of all motor equipment on site, eliminating the need for an engineer to be equipped at each device on site for real-time monitoring, improving the safety and reliability of the entire control system. The protector outputs 4-20mA analog signals to the control system, facilitating centralized control by engineers.
(2) Intelligent control protection
The protector is directly connected in series to the control circuit. When the motor experiences faults such as overcurrent, phase failure, and overheating, it will promptly terminate the operation of the motor and provide corresponding indications for various fault information. The protector can automatically recognize the manual control circuit and the automatic control circuit. For the automatic control circuit, it can memorize self-locking, avoiding repeated starting of the motor in a fault state and exacerbating motor damage. At the same time, the detection components of large motors in cement plants adopt a through core current transformer structure, which forms complete isolation from the main circuit, improves its reliability, and completely solves the heating problem of wiring terminals, with good interchangeability.
(3) Fault recording facilitates on-site problem analysis
Electric motors work in harsh cement production environments and are prone to malfunctions, with diverse causes of failure. By adopting intelligent motor protectors, in the event of a motor failure, the backup motor is promptly put into operation without affecting the operating mechanism. The powerful fault recording function of the protector also saves maintenance personnel a lot of time, improves production efficiency and system reliability.
