|
The solution to the low or high output of the differential pressure transmitter – ifm
When the differential pressure flowmeter (V-cone flowmeter) is used in the field, it often encounters such and such problems, but the reason for it is investigated, as long as it is installed correctly, the primary problem is on the secondary surface differential pressure transmitter, and the following is the first to introduce these problems to us ...
|
|
Inverter maintenance and undervoltage fault handling - Reynolds
In the repair of the inverter, we often hear about overpressure problems, but underpressure problems are also common problems encountered in the use of inverters. The reason is that the main circuit voltage is lower than the lower limit caused by the maintenance action or the damage of a rectifier bridge or the instantaneous power failure of the power grid, and the input is flat. Inverter after-sales ...
|
|
Wiring of the main circuit of the inverter - Reynolds
(1) Inverter three-phase communication input terminal (R, S, T)
The power input terminal is connected to the three-phase communication power supply through the circuit breaker of the circuit breaker for line protection, regardless of the connection phase sequence. It should be noted here that the three-phase communication power supply must not be directly connected to the inverter output ...
|
|
The cause of the damage of the inverter - Reynolds inverter
What are the causes of inverter damage?
First, the heat dissipation of the inverter is not good
In fact, we all know that too high a temperature can have a damaging effect on any device, just like the human brain, too high a temperature can also burn out the brain ...
|
|
Parameter setting of acceleration and deceleration time of Reynolds universal inverter
The acceleration time of the Reynolds inverter is the time required for the output frequency to rise from 0 to the high frequency, and the deceleration time is the time required to drop from the high frequency to 0. Usually, the inverter uses the frequency setting signal to rise and fall to confirm the acceleration and deceleration time. When the motor accelerates, the rise of the frequency setting must be constrained ...
|
|
Precautions for installation of Reynolds low-voltage inverters
One. Safety Precautions
1. First of all, it is necessary to have certain electrical professional knowledge, and understand the job site, understand the equipment status, and have certain electrical operation technology.
2. Determine the voltage level of the equipment (such as low-voltage AC380V) and whether it is low-voltage ...
|
|
Indicator of Reynolds inverter cabinet wiring
Voltage level: The voltage level should match the voltage level of the power supply and motor to ensure electrical safety and normal operation of the equipment.
Current level: The current level should match the rated current of the motor to ensure electrical safety and normal operation of the equipment.
Cable Specification: Cable ...
|
|
The inverter cannot adjust the frequency solution - Reynolds
In the course of inverter repairs, if there is no significant damage to the hardware and the maximum torque of the VFD is usually less than the torque of the load increase. It means that the load capacity of the frequency conversion speed control equipment has decreased significantly. So how do you deal with this?
...
|
|
Features of the unit tandem inverter - Reynolds
(1) The multi-pronged PWM control method is selected, and the output voltage waveform is close to the sine wave.
(2) The rectifier circuit is multiplied, the number of pulses is as high as 36, the power factor is high, and the input harmonic is small.
(3) Modular design, compact structure ...
|
|
Centrifugal fan inverter selection method - Renol
1. See if it is energy-saving.
When selecting equipment products, many business managers will take into account the energy-saving embodiment, which is due to the excellent energy-saving embodiment of the product, which can save a lot of money and resources.
|
|
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 ...
|
|
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.
|
|
The difference between "braking" and "parking" of the inverter - Reynolds
There are two types of inverter parking.
One form is called "free parking". As the name suggests, it is to quickly "power off" the motor, so that the motor can slide and park by its own inertial force (OFF2 parking);
The other form is called "brake parking". So this "brake parking ...
|
|
Reynolds JJR5000 Series Soft Starter Manual
Reynolds JJR5000 series all-digital intelligent communication motor soft engine adopts power electronics skills, microprocessor skills and modern control theory skills, and is a new type of engine equipment at the current level. The product can limit the starting current of the asynchronous motor when it starts, and is widely used in electric fans, ...
|
|
The difference between inverter motor and ordinary motor – Reynolds
Inverter motor - used for special occasions with inverter, it is different from the general motor in that a strong cooling fan is added. And the power of the fan comes from the independent power supply, can not be from the main motor out of the line, the effect of the strong cooling fan is to ensure that the motor at low speed...
|
|
The difference between overload and overheating of the inverter – Reynolds
The inverter is an electric control equipment that uses frequency conversion technology and microelectronic technology to control and communicate the motor by changing the power supply frequency of the motor operation. The inverter is mainly composed of rectifier (AC to DC), filtering, inverter (DC to communication), braking unit, drive unit, detection unit ...
|
|
The difference between servo and inverter - Reynolds
Overload can be different
Servo drives generally have 3 times the overload ability, which can be used to overcome the inertial moment of the inertial load at the moment of start-up, while the frequency converter generally allows 1.5 times the overload.
Handling precision
Servo control ...
|
|
Servo drive failure and solution
1. When the servo motor of the robot is running at a very low speed, it is fast and slow, just like a creeping machine. Low-speed prostrate servo motors are usually caused by low system gain. Please adjust the parameter N.10.N.11.N.12 to adjust the system gain appropriately, or the automatic gain adjustment function of the running driver ...
|
|
Key points for the selection of Reynolds servo motors
Each type of servo motor has additional torque, maximum torque and servo motor inertia and other parameters in the standard items, each parameter and load torque and load inertia must have a relevant connection, the output torque of the servo motor should meet the requirements of the movement conditions of the load organization, such as the speed of the acceleration ...
|
|
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...
|