1. Use a vacuum cleaner with a plastic nozzle to thoroughly clean the inside and outside of the inverter cabinet to ensure that there is no excessive dust around the equipment.
2. Check the ventilation and lighting of the frequency conversion room, and the ventilation equipment can operate normally.
3. Check that the connection between the cables inside the inverter should be correct and reliable.
4. Check that all grounding in the inverter cabinet should be firm, and there should be no rust at the grounding point.
5. The connecting nuts of the internal cables of the inverter should be tightened again every six months.
6. Check the tightness of all electrical connections, check that there are no abnormal discharge traces in each circuit, and there is no strange smell, discoloration, cracks, damage and other phenomena.
7. After each time the inverter is protected, it is necessary to carefully check whether there are missing screws and wires, etc., to avoid small metal objects forming a short circuit of the inverter. In particular, after making major changes to the electrical circuit, ensure that the connection of the electrical connection line is correct and reliable, and avoid the occurrence of 'reverse power transmission'.
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"RNB6000 frequency conversion governor" was included in the National Torch Program
Recently, in the "2012 National Torch Program Project" issued by the Ministry of Science and Technology of the People's Republic of China, the "RNB6000 Frequency Conversion Governor" independently developed by Reynolds was included in the "2012 National Torch Program Project" with its domestic leading skills and efficient energy-saving conversion power.
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The main failure mode of mechanical parts – Reynolds
The top failure modes of mechanical parts:
Failure: The mechanical part cannot complete its normal function within the planning and booking period and under the regular conditions.
Ways in which mechanical parts fail: overall cracking, plastic deformation, corrosion, abrasion, gluing, and touch exhaustion
General ...
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Precautions for the coordination of PLC and inverter - Reynolds
Under the current production conditions, when the inverter is used to form an automatic control system for control, in many cases, it is necessary to choose PLC and inverter to match the use, such as bearing cleaning, packaging paper printing, PCB board production, etc.
PLC ...
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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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Frequency conversion cabinet external conduit wiring method - Reynolds
When it is required to wiring outside the frequency conversion cabinet, it is generally necessary to use the conduit for wiring, which requires suitable mechanical pressure and unsuitable mechanical damage, moisture-proof and corrosion-resistant. Conduits include the following two wiring methods:
1. Kim ...
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Safety precautions for low-voltage soft lift - Reynolds
Precautions for low-voltage soft starters
For cooling purposes, the soft starter must be installed in a straight direction.
In order to ensure excellent heat dissipation, there should be room for the soft starter device.
Main circuit selection ...
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Analysis and repair of inverter failure cases - Reynolds
1. The inverter can not speed up the frequency increase when it starts with load
The 1366S-BR 040 inverter carries a load of 37 kW fan motors. During the trial operation, it was found that the inverter could not speed up the frequency increase normally, and the HIM display was speeding up. The inverter only swings at 1-4 Hz, and the motor emits a buzzing ...
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Reynolds inverter code function description
F09 second acceleration time 0.10 - 999.9sec; 5.0sec； △** The acceleration and deceleration parameters and the second acceleration and deceleration parameters are switched by terminal X3 (see F55);
F10 second deceleration time 0.10 - 999.9sec; 5.0sec； △**Acceleration and deceleration parameters and the second acceleration and deceleration parameters are switched ...
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The soft starter output is out of phase fault
Soft Starter Repair Problem: F 04 (Input Phase Loss):
There are several factors that cause this problem, some of which are listed below:
(1) Check whether the wiring between the incoming power supply and the motor is loose;
(2) Whether the output is connected to the load, and whether the load is matched with the motor;
(3) ...
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Application misunderstandings and drawbacks of inverter and countermeasures - Reynolds
Misunderstanding: connect electromagnetic switches and electromagnetic contactors in the output circuit of the inverter
In actual use, some occasions require the use of contactors for frequency converter switching: such as when the frequency conversion is faulty, switch to the power frequency operation, or when the one-to-two method is adopted, a motor is faulty, and the variable frequency is used.
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Precautions for low-temperature operation of VFD
1. VFD should be operated in an environment above minus 10°C as much as possible, and it is best to operate indoors.
2. When the VFD is started and stopped, try to start and stop with the VFD itself, do not close the power supply, and keep your VFD in a power-on state.
3. Give VFD l ...
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Inverter maintenance power-on test instructions - Reynolds
First, the inverter is not repaired and the power test is tested
(1) Inverter repair test rectifier circuit
At the two ends of the inverter to detect the internal DC power supply, P and N ends, adjust the multimeter to the resistance RX10 gear, the red watch pen is connected to the P end, and the black watch pen is connected to R, S, T, and there are tens of ohms under normal conditions.
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Difference Between Soft Starter and Inverter – Reynolds
Soft starters and frequency converters are two completely different products. The inverter is used in the local area where speed regulation is required, and its output not only changes the voltage but also changes the frequency at the same time; A soft starter is actually a voltage regulator, which is used when starting a motor, and the output only changes the voltage and does not change the frequency. Change...
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The heat dissipation method of the switching power supply
1. Transfer heat pipes for heat dissipation.
In many applications, heat generated from the base steel plate of the power module is transferred through the heat transfer components to the distant surface of the heat pipe. In this way, the temperature of the base steel plate of the power module will be equal to the temperature of the heat pipe heat dissipation surface, the temperature of the heat transfer parts, and the temperature of the two contact ...
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Common faults and solutions of vector inverter - Reynolds
The following faults may be encountered during the use of the inverter, please refer to the following methods for simple fault analysis:
1. No manifestation at power-on:
1) Use a multimeter to check whether the input power supply of the inverter is consistent with the rated voltage of the inverter, and check the cleaning problem.
2） ...
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Protection feature of overcurrent trip - Renol
1. Maintenance objectives of overcurrent
In the frequency conversion speed regulation system, there are two devices: the frequency converter and the motor. The degree of tolerance to overcurrent is not the same. The planners of the production machinery decide on the capacity of the motor based on the principle of heat. That is, as long as the electricity ...
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The difference between heavy-duty inverter and light-duty inverter
1. The starting time is different: light load generally refers to the small inertia of the equipment load, and the energy storage balance time of the demand for start-up is short, that is, the starting time is short. Heavy load generally refers to the long time of energy storage balance when the equipment load inertia is large and needs to be turned on, that is, the time of start-up.
2. The requirements for working current are not ...
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Reynolds servo motor selection steps
According to the requirements of the operating conditions, the appropriate load inertia accounting formula is selected to calculate the load inertia of the organization.
According to the load inertia and servo motor inertia, the appropriate servo motor standard is selected.
Combined with the inertia and load inertia of the primary servo motor, the acceleration torque and deceleration are calculated.
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Introducing the Reynolds JJR8000 series of intelligent soft starters
JJR8000 series of intelligent motor soft starter is the use of power electronics skills, microprocessor skills and modern control theory skills to produce today's international first-class starting equipment, the product can constrain the starting voltage of the asynchronous motor when starting, can be used in fans, water...
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Introduction to soft starters and their relationship with frequency converters - Reynolds
When the high-power motor starts, the current is large, which will cause the grid voltage to be seriously shaken, in order to deal with this problem, the general requirements for speed regulation are not high, and the soft engine can be used to reduce the voltage and start. However, the drop in the starting current when the step-down is started will also make the starting torque drop significantly.
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