Senlan inverter chemical industry air compressor application precautions

1. The contact screen all-in-one machine adopts the new contact identification technology, and the user only needs to touch it lightly on the contact screen without passing the pressure sensing to complete the operation. Care must be taken not to use too much force or sharps to scratch the surface of the contact screen. ...

There are many control methods for inverters for fans and pumps, which can be selected according to specific conditions. Here are a few common scenarios. (1) Manual adjustment This is the simplest control method, that is, the operator instructs according to the instrument, ...

Investigation of the function of the inverter system Before debugging the frequency converter, it is necessary to carefully read the operation instructions and related information of the inverter to be debugged to understand the application environment and precautions. Especially before the inverter is energized, it is necessary to carefully observe and see if the inverter has obvious problems.

First, the operation of the machine before the technical transformation The sugar separation process of a sugar factory in Yunnan uses centrifugal dehydration method. The separation machine is mainly composed of a cone drum and a drive motor, and the motor shaft is directly connected to the bowl. Solid sugar crystallized from a high concentration of sugar water, in a cone bowl ...

The operating principle of the inverter determines that it will have a certain disturbance, which may bring EMC (electromagnetic compatibility) problems to the equipment or system, and the inverter, as an electronic device, will also be affected by external electromagnetic disturbance. Below...

Hope Sunland inverter is a high-performance inverter product, which has high operational reliability, high energy efficiency, strong control performance and long service life. Hope Sunland inverter has been widely used in industrial process production control, machinery control, water treatment, construction and transportation and other fields. This article will start with ...

A frequency converter (VFD) is an electrical energy control device that converts a power supply to another frequency by using the on-off effect of power semiconductor equipment. It can realize the soft start, frequency conversion speed regulation, improved operation accuracy, power factor, overcurrent/overvoltage/overload protection of AC asynchronous motor, etc.

1. Select the inverter according to the load characteristics Second, when selecting the inverter, the actual motor current value should be used as the basis for the selection of the inverter, and the extra power of the motor can only be used as a reference. Secondly, it should be fully considered that the output of the inverter contains higher harmonics, which will form the power factor of the motor.

Depending on the cause of overvoltage, the countermeasures adopted are different. Regarding the overvoltage phenomenon that occurs in the parking process, if there is no special requirement for the parking time or direction, then the extension inverter deceleration time or free parking method can be selected to solve it. The so-called free parking ...

Hope Sunland inverter part of the fault code Er.ocb (1) Overcurrent at the moment of starting: There is a short circuit inside the motor There is a short circuit in the motor wiring The starting voltage is too high Check the motor and wiring Check the motor wiring Seek service Check the torque ...

The inverter is a motor control (speed regulation) device that uses the on-off effect of power semiconductor devices to convert the power frequency power supply to another frequency. Composition 1: 1. Rectifier unit: convert the communication electricity with fixed operating frequency into DC ...

First, according to the classification and selection of inverters 1. Inverters can be divided into general-purpose inverters and special inverters. 2. General-purpose inverters are mainly used in: general fan pumps (referring to inverters that only drag a single fan or pump) loads, mechanical loads, and loads requiring high overloads.

(1). The deceleration time of the frequency conversion parameter is increased or free parking is adopted Assuming that the overpressure phenomenon is present in the parking process, the process has no parking requirements for the parking time or direction, and the deceleration time can be increased appropriately. The reason for the overvoltage in the parking process is that after the frequency conversion announces the deceleration command, the motor ...

The input and output currents of the inverter contain many higher harmonic components. In addition to the lower harmonics that can constitute the reactive power loss of the power supply, there are many harmonic components with high frequencies. They will transmit their own energy in various ways, forming a positive impact on the inverter itself and other equipment.

1. Condensation The temperature difference in the workshop is large, and the inside of the inverter presents condensation. 2. Impact load. The load fluctuates greatly, and the output current of the inverter suddenly increases, resulting in module damage. 3. The inverter is overloaded in the start, ...

Dry-type transformer is a kind of power equipment, and under normal circumstances, dry-type transformer also requires a certain amount of overload, that is, the workload beyond its working ability. So what about the overload of dry-type transformers and how to influence them? ...

1. Mechanical speed regulation form There are three methods of mechanical speed regulation: electromagnetic clutch, hydraulic coupling, and viscous clutch. Among them, the hydraulic coupling device is widely used, that is, a hydraulic coupling device is connected in series between the motor and the load, and the concave and convex liquid level is used to adjust the hydraulic coupling between the motor and the load.

For the most popular electrical control equipment inverter (Variable-frequency Drive, VFD), as a precision electronic industrial control equipment, in order to run smoothly for a long time, we, as professional and technical personnel, need to be on the VFD device or before the operation.

The rotational speed of an induction AC motor (henceforth referred to as a motor) is approximately determined by the number of poles and frequency of the motor. The number of poles of the motor is fixed by the operating principle of the motor. Since the number of poles is not a successive value (a multiple of 2, e.g. 2,4,6), ...

1. Obtain accurate motor parameters from low to high parameters at different frequencies, and establish motor models of corresponding frequency bands in different frequency segments, so that the inverter can control the motor from low to high. 2. V/F control (1) It is possible to select 15 pre-set V/...