The inverter has power loss during operation and converts it into heat energy, which increases its own temperature. Roughly speaking, the power loss of every 1kVA inverter capacity is about 40W-50W. Therefore, when installing the inverter, it is necessary to consider the heat dissipation problem of the inverter, and how to fully dissipate the heat generated during the operation of the inverter, so it is necessary to pay attention to the device method.
(1) Wall-mounted device
The housing of the inverter is planned to be relatively robust, and in general, it is allowed to be installed directly on the wall, which is called wall mounting. In order to ensure excellent ventilation, all inverters must be straightened, and the interval between the inverter and the surrounding objects should meet the following conditions, more than 100mm on both sides, and more than 150mm on the top and bottom, and in order to prevent debris from falling into the air outlet of the inverter and blocking the air duct, it is best to install a baffle above the air outlet of the inverter.
(2) Cabinet device method
When there is too much dust on the site, the humidity is relatively large, or there are many peripheral accessories of the inverter, and it needs to be together with the inverter device, the cabinet device can be used. The inverter cabinet device is the best device method now, because it can play a good role in shielding radiation disturbance, and can also prevent dust, moisture, and light. Precautions for the cabinet device method:
When a single inverter adopts the cabinet cooling method, the top of the inverter cabinet should be equipped with an exhaust cooling fan, and try to install it directly above the inverter (so as to facilitate air circulation);
Multiple inverter devices should be installed side by side as much as possible, and if longitudinal methods must be used, a partition should be installed between the two inverters.
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Inverter replacement component requirements - Reynolds
1) Find out the basic parameters and appearance of the equipment that needs to be replaced. The basic parameters include the rated operating current, the capacitance of the capacitor, the resistance value of the resistor, the value of the GTR Darlington device (current amplification factor), the switching characteristics and saturation voltage of the IGBT (including IPM) device, etc.
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Safety standards for AC drives – Reynolds
International electrical safety standards: The requirements are in line with international electrical safety standards, such as CE standards in Europe and UL specifications in United States. These specifications specify the requirements for electrical safety functions, mechanical safety functions, EMC functions, etc.
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Characteristics of isolation transformer at the input end of AC power supply - Reynolds
a。 When the third harmonic and disturbance signals are severe, a barrier transformer can be used to eliminate the third harmonic and disturbance signals.
b。 The use of barrier transformers can generate new neutrals and avoid the abnormal operation of equipment due to defective neutrals in the grid.
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PLC and inverter communication mode
1. The switching signal of PLC controls the inverter
The PLC can control the start, stop and reset of the inverter through the program; It can also control different combinations of high-speed, medium-speed and low-speed terminals of the inverter to achieve multi-stage speed operation. However, because it is controlled by switching ...
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Reynolds inverter overhaul process
1) Query and query fault phenomena. The fault phenomenon of the inverter is varied, for example, the same type of problem may have different problem phenomena, and different types of problems may have the same kind of problem, which brings difficulties to find the problem. However, the problem phenomenon is the fundamental basis for repairing the inverter ...
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Inverter selection conditions and precautions - Reynolds
1. When selecting the inverter, select the inverter with the appropriate control method according to the load characteristics
In addition to the inverter manufacturing process, it is also important to choose which control method of the inverter. The control method of the inverter is mainly divided into two types: open-loop control and closed-loop control. In the meantime, the open-loop control method ...
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Reynolds inverter control method
The actuator commonly used in the industrial field of Reynolds inverter has good speed regulation performance and simple and convenient operation method. Therefore, it is widely used in the automation system.
Typical wiring method for the main circuit of a Reynolds frequency converter
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Reynolds inverter FAQ - parameter class
1. What are the factory parameters of inverter rehabilitation?
N600 = 100 (often press the WR button for 3-5 seconds), it is necessary to be in the shutdown state to be effective.
2. In the parameters of the N308 motor of the inverter, [motor leakage inductance reactance] is the specified sub...
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The object of protection of frequency converters in overload protection - Reynolds
Inverters are mainly divided into two categories according to the frequency conversion method: communication/DC/communication and communication/communication inverters. Here we take the widely used general "communication/DC/communication" as an example to briefly talk about its structure and operating principle. As can be clearly seen from the above diagram, the communication/...
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How to measure a frequency converter with a multimeter – Reynolds
How to use a multimeter to measure the quality of the inverter, it needs to be noted that for personal safety, it is necessary to ensure that the machine is powered off, and remove the inverter input power line R, S, T and output line U, V, W before operation! First of all, the multimeter is hit to the "secondary pipe" file, and then through the multimeter ...
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Reynolds drive control panel description
1. FUN button; Press the FUN button to enter the settings menu F00;
2. Press and hold the up button or down button to scroll to the code that needs to be set;
3. Press the FUN button to confirm at this moment, and adjust the entry parameters to the required value;
4、 ...
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Inverter leakage solution - Reynolds
1. The cause of the leakage problem
Some sites use frequency converters to control the motor, which will present the problem of leakage, and the leakage voltage ranges from tens of volts to 200 volts. In view of this problem, the reasons for this shortcoming are theoretically expounded and stated as follows.
Depend on...
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DCS and PLC and other control cabinets are inspected before leaving the factory
1. Test preparation:
1. It is necessary to remove all power switches before powering on the PLC control cabinet or IO cabinet.
2. It is necessary to completely cut off the connection between the PLC or DCS card and the outside. All front adapters are to be loosened and raised.
3. Check the power terminal wires and connectors.
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Reynolds frequency converters are remotely controlled for wiring
1. Connect X (switching input) drive terminal to control the inverter start-stop/positive rotation;
2. Connect to the AI (analog input) terminal to control the frequency of the inverter (perhaps made into PID closed-loop control automatic adjustment frequency)
3. ...
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The inverter protects the motor - Reynolds inverter
1. The output of the inverter for overvoltage maintenance has the function of voltage detection, and the inverter can actively adjust the output voltage, so that the motor does not bear the overvoltage, and the motor runs within the set voltage range.
2. Undervoltage maintenanceWhen the voltage of the motor is lower than 90% of the normal voltage (some are set to 85% ...
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Motor soft start mode – Reynolds frequency inverter
Starting performance is a very important performance parameter of motor products. The large starting current of the motor is an unpreventable problem in the process of direct starting. The high current during the engine process has a great impact on both the power grid and the motor itself. Therefore, according to different working conditions and different series of motors, ...
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Reynolds inverter parameter settings
The use of Reynolds inverters in industrial production is very important, in addition to speed regulation, soft start effect, the important thing is to be able to save energy. There are many functional parameters of Reynolds inverter, and there are generally dozens or even hundreds of parameters for users to choose. In practice, it is not necessary to ...
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Reynolds frequency converters RNB1000 series E.ITE fault codes
Reynolds inverter problem code:
E.ITE
Reynolds inverter problem phenomenon/type:
Problems with the current sensing circuit
Possible causes of Reynolds inverter problems:
1. Poor contact of the control board connector
2. The auxiliary power supply is damaged
3. Hall ...
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Applications of Reynolds frequency converters
A frequency converter is a power electronic device that can change the frequency of an AC power source to control the speed and output power of a motor. Inverters are widely used in industry, aviation, metallurgy, petroleum, chemical industry, electric power and other fields.
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Key points for the selection of AC contactors - Reynolds
1. Select varieties according to the above series according to the purpose and requirements of use
Note that the main circuit load type is strictly differentiated, whether it is DC or communication.
The communication contactor is different from the DC contactor, and is only suitable for DC-1 to DC-5 loads when used for DC loads.
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