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What is a frequency converter (frequency inverter)?
What is a frequency converter (frequency inverter)?
20     Admin     ARTICLE     22/12/2020       1155

What is a frequency converter (frequency inverter)? What is a frequency converter (frequency inverter)?

Inverter, in other words frequency inverter is a device for regulating the speed of electric motors.

It is generally used to control asynchronous motor cycles. Speed control of an asynchronous motor can be done in two different ways.
1- By changing the number of poles 2- By changing the motor feeding energy frequency
Unless double speed motor is used; Since it is impossible to change the number of poles of the motor in the installation, motor speed control can be done by changing the supply frequency. At this point, you need to include frequency inverters in your project. The motor speed with frequency inverters; It is possible to control the speed by keeping the motor at the desired point between the lowest and highest revolutions.
In frequency inverters; overload, over current, under and over-voltage, over-temperature, short circuit etc. there are protections. Frequency inverters; It corrects the mains voltages, absorbs, filters and cleans all voltage fluctuations, peaks, damaging electric currents that occur in the network with the help of capacitors and coils in hardware mechanisms.
Besides, as long as an emergency stop device is installed on the frequency inverter and appropriate equipment is prepared, your device can protect itself and your motor in any actionable situation that may occur in the system.
Today, many inverters are now manufactured with PLC functionality. Thanks to these smart applications of inverters, you can dance your asynchronous motor as you wish, and you can do many numerous applications such as PID method and MASTER-SLAVE with inverters.
Considering the sensitivity of the product carried by frequency inverters; With its soft start and soft stop feature, adjustable ramp times, follow-up of the instantaneous current-voltage-frequency curves of the motor, anti-sway, anti-grab and speed control according to the load if PLC hardware is added, instantaneous error codes, motor recognition features and with quality,It has become an indispensable part of Arnikon Engineering and Crane Systems.
As Arnikon Engineering and Crane Systems, we support frequency inverters to comply with new generation technology and quality standards; Considering the environmental conditions and occupational safety of the project site where the crane will be installed, we would like to state that it is the number one product of our electrical equipment group.
In line with our ongoing R&D studies in the smart crane sector, we adopted the PLC-Frequency Inverter-Motor and Frequency Inverter-Motor equipment as a company, and we used Frequency Inverter and Motor controls in all of our standard cranes; In our specially designed smart cranes; We make Frequency Inverter-Motor controls with PLC.

Smart cranes, Smart solutions
19     Admin     ARTICLE     09/10/2020       911

Smart cranes, Smart solutions

The Smart area comes, Smart cranes also.

After three years of research and development, intelligent crane is already ready. This crane is the top advanced smart control system which can realize the various intelligent functions such as full automation of unmanned operation, smart safety monitoring, anti-swaying, speed extending, inching, automatic positioning, Smart load-floating, shock prevention, synchronization, anti-rope-slacking protection, etc.
Sway Control limits load swing by controlling the bridge and trolley acceleration and deceleration. Sway control allows faster load handling and more precise positioning. This feature also reduces the risk of damage to the load, crane and surrounding area. Active sway control designed to dampen also the existing load sway.
Snag prevention is designed to stop all crane movement if the hook, sling or load accidentally gets caught on something. This safety function reduces the risk of hazardous situations while moving loads and helps to prevent damage to the load, crane and surrounding area.
Adaptive speed range (ASR) and extended speed range (ESR) allows you to optimize the speed of your crane. An empty hook can be moved at over double the speed of a loaded hook, allowing the operator to choose the most efficient way to control the hoist. Variable hoisting speeds provide accuracy during slow-speed operation and shorter load cycle times during the faster operation.
Assisted load turning helps turn the load by keeping the ropes straight and eliminating side pull. this function makes one of the most challenging crane operation more simple and less risky. the benefits of this feature are faster load cycle times, longer crane lifetime and it simply makes the use of crane easier.
Hook centring is designed to eliminate side pull during lifting by positioning the bridge and trolley automatically directly over the load. This feature means less wear and tear on your crane’s components, faster load cycle times and ease of operation.
Hoisting synchronization monitors and controls the position difference of the hooks and synchronizes the movement of each hoist. This function gives more accuracy when two hoists are used at the same time.
Protected areas and working limits allow defining protected zones such as production machinery or storage areas, where the crane is not allowed to enter. Working limits build temporary ”virtual walls” at which your crane is designed to stop automatically. These functions help prevent collisions between the crane and valuable equipment near the crane and thus increase safety and prevent possible damage.
Shock load prevention allows smooth load pick-up. The hoist drive monitors the load. If the load is picked up abruptly, the hoisting speed is automatically reduced until the load is lifted. This feature designed to prevent shocks to the load and the crane, and extend the lifetime of the crane’s steel structure and mechanical parts.

The Place and Importance of Finite Element Method in Crane Applications
18     Admin     ARTICLE     10/09/2020       797

The Place and Importance of Finite Element Method in Crane Applications

In the industrial world that is continually evolving and renewing, many engineering programs are required to keep up with the current technology. One of them is FINITE ELEMENTS Programs.
These programs, where Static, Dynamic, Rigid and Flexible analyzes can make are programs that create designs and projects at optimum level and maximum efficiency by combining engineering and manufacturing, theoretical and practical.
As Arnikon Engineering, to ensure minimum dimensions and high strength to Double girder overhead cranes, single girder overhead cranes, jib cranes, Gantry cranes, ground carriages, hoists and specially designed cranes that we manufacture Systems are optimized through various design and finite element programs in our Numerical Analysis laboratory and delivered to our customers with the assurance of ARNIKON engineering.
Effects of Demountable Lifting Groups on Hoists
17     Admin     ARTICLE     20/08/2020       716

Effects of Demountable Lifting Groups on Hoists

Arnikon Hoists, which are an engineering product, have been designed to increase the aesthetic appearance, convenience of manufacturability during assembly / disassembly. Single girder and double girder hoists; It consists of 5 main groups: Lifting Group, Travelling Group, Drive Group, Hook Group and Boom Group.
Before the demountable system was used, different lifting groups with the same tonnages were designed for our VDH / VDMH series hoists. The lifting group was welded on the boom group, the structure formed by the large pieces reduced the paint capability and damaged the visual integrity of the product. For these reasons, our demountable lifting groups have been designed considering these problems. As a result;
• Using the same lifting groups with the same tonnages for our VDH / VDMH series trolleys, • Ease of during maintenance and malfunction, • Fast production / fast delivery thanks to the ease of manufacture, • Precise manufacturing thanks to the reduction in part size, • Increasing the paint and coating ability of the parts thanks to the structure formed by smaller parts, • Manufacturing of products with high corrosion resistance and long life, together with increased coating ability, • Painting the whole parts before assembly has increased the visual integrity of our hoists.

Effects of bogie system on crane travelling mechanisms
16     Admin     ARTICLE     27/07/2020       617

Effects of bogie system on crane travelling mechanisms

The bogie system has come up as an engineering product to increase the performance, efficiency and quality of use of the travelling mechanisms that provide movement in crane systems.
It is aimed to achieve superior performance and high efficiency at maximum loading state and maximum travelling speed with the travelling mechanisms, new generation Wheel Blocks and Bogie System.
One of the constructive elements that directly affect the operation of the travelling systems is the rails. To ensure the harmonious passage of cranes with rigid structure, to eliminate the irregularities in the positions of the rails, a balancing system was created with Bogie.
The Bogie System absorbs high vibrations that may occur when the crane operates at full load and runs at maximum speed and decreases the effect of centrifugal forces.
In this way, it minimizes rail / wheel wear and the risk of derailment that may occur in cranes with high working capacity.
Bogie System (Fixed and Moving Group), which is also used in the Travelling mechanisms of Hoists, ensures that the wheels are always pressed and the load is distributed proportionally to the wheels.
Thanks to the evaluations, tests and positive feedbacks, we observe that our crane travelling systems have achieved superior success together with the Bogie System and Wheel Blocks.
Effects and importance of wheel blocks on the travelling systems
15     Admin     ARTICLE     05/06/2020       1096

Effects and importance of wheel blocks on the travelling systems

One of the most important equipments of the travelling systems that are exposed to constant strength (dynamic/static) is Wheel Blocks.
Constructive requests that directly affect the operation of the travelling systems should be prioritized. Because it is thought that these requests will reach the effective success and high performance targeted at the maximum loading state and maximum execution speed of the crane.
With such a prediction, operational safety, adequate life, ease during assembly/disassembly, quiet operation, easy maintenance/lubrication, etc. such requests are qualities that must be found in each travelling system.
For this purpose, considering the aforementioned problems, Wheel Block has emerged as a design and engineering product for travelling systems.
Wheel Blocks, which is an R&D product, is produced as a completely domestic design and specially designed monoblock body. Producing as a monoblock body provides ease in the assembly/disassembly process.
It has a quieter and more sensitive bearing system compared to its alternatives, thus increasing the life of the bearing, the wheel and the gearbox, thanks to the adjustable wheel center, it provides +/- 15mm movement in the centers where there are rail defects.
As a result of these evaluations and thanks to the positive feedback we have received from the customers, we believe that the Wheel Blocks satisfy the demands that should be found in the travelling systems and achieve the targeted effective success and high performance.
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