Variable frequency drive vfd can be used in lots of fields. A wide variety of frequency inverter lg options are available to you, there are 154 suppliers who sells frequency inverter lg on, mainly located in asia. Additional information of this manual may be served by lg semicon offices in korea or distributors and representatives, structure gms90x5x gbxxx xx xx mask rom version lg semicon mcu frequency blank. Ac variable frequency drive for use with ac induction motors. Lg variable frequency drive is3 datasheet, cross reference, circuit and application notes in pdf format. Dvfp series variable frequency drive product manual. The high frequency will make the motor runs in high speed, for general motors, the bearing can not be operated in over rated speed for a long time, the motor rotor is able to withstand such centrifugal force or not.
Ls starvert ig5a manual inverter drive supermarket. Head office lg twin towers, 20 yoidodong, youngdungpogu, seoul, 150721, korea. The ac electric motor used in a vfd system is usually a threephase induction motor. This vfd manual describes information on how to handle the vfd. Adjustable frequency drives also known as variable frequency drives adjust a motors speed to closely match output requirements, resulting in a typical energy savings of 10 to 50 percent. Variable frequency drive technical faq see the answers to some common questions about vfds you may have. Variable frequency drives vfds popular speed control devices used in industrial, commercial and residential applications. Variable frequency drives a variablefrequency drive vfd is a system for controlling the rotational speed of analternating current ac electric motor by controlling the frequency of the electrical power supplied to the motor. Safety instructions are prepared to use the product safely and correctly by preventing any accident or risk. Factor 2 variable frequency drive instant trip current to nominal output current most variable frequency drives are rated at 150%, i. Pipe or tube a line from the water source to the pump inlet. Labvolt series by festo didactic variablefrequency drive. The output of the ag cell is a current, temperaturecompen sated variable gain cell, and an operational amplifier. Jog selection 0 n 50 h 17 jog frequency 0 400 frequency for jog drive 5.
Lg industrial systems sv015is34 3ph ac motor speed. Take a look at the wide selection of open and closed drive. Motor controllers ac variable frequency drives type variflex3. First select an applicable conversion table code from the following tablelist, and next find the table from the section of conversion table in accordance with the hoist or trolley voltage. Programming the vfd variable frequency drive important parameters that need to be programmed in order to use the vfd, variable frequency drive. Ls variable frequency drivels variable frequency drive. Vector control variable frequency drives are usually more expensive than a vhz drives.
Some types of singlephase motors or synchronous motors can be advantageous in some situations, but. These applications include single motor driven pumps, fans and compressors, as well as highly sophisticated multidrive machines. The variable frequency drive training system is a stateoftheart training system specifically designed to introduce students to the basic principles of variable frequency drives vfds. The basics of variable frequency drive installation.
Vfd68 variable frequency drives 230 or 460 vac installation instructions 6 observe the following location guidelines. Lg vfd power inverter parameter computer programming. As the frequency of the voltage is reduced, the inductive reactance of the. Apr, 2012 another type of variable frequency drive is known as a vector control. The parameters are preset and adjustable in accordance with the following information. The space vector technology is being adopted in all lg drives. Ac motor, main drive controller assembly, and driveoperator interface 210211 ac motor. Variable frequency drive ie5 user friendly micro size slim vfd 1 phase 0. As the frequency is decreased, the speed of the motor also decreases.
Read this manual carefully before installing, wiring, operating, servicing or inspecting the drive. Smvector variable frequency drives come in four different voltages. Only authorized personnel familiar with lg inverter should perform wiring and. The most common type of packaged vf drive is the constantvoltage type, using pulse width modulation to control both the frequency and effective voltage applied to the motor load. Unit max, 16mhz external clock drive parameter symbol.
Maximum output voltage will not be greater than the input voltage. As the frequency of the voltage is reduced, the inductive reactance of the motor stator winding is also reduced. The top countries of suppliers are china, singapore, from which the percentage of frequency inverter lg supply is 96%, 3% respectively. In this manual, safety messages are classified as follows.
The above figure shows how the voltage and frequency are varied by a variable frequency drive. It is designed for portability and powered using a standard. A variable frequency drive system generally consists of an ac motor mostly 3 phase induction motor, a controller solid state electronic power conversion devices like. We provide worldclass variable frequency drives and manufacture drive enhancement packages that control the operation frequency and voltage of electric motors with simplicity. Variable frequency drives vfd, aka variable speed drive vsd have been available for use with a wide range of applications for over 20 years. Misalignment or excessive pipe strain can cause distortion of pump components resulting in rubbing, breakage, and reduced pump life.
Variable frequency drive inverter user friendly micro size slim inverter 1 phase 0. In some applications such as speed control for a conveyor, the. As of late, the use of a vfd is becoming more popular than ever due to its claimed efficiency benefits, but be sure it is needed. Output lg 11 s signal burst output s wide frequency range, 0. Duty weight kg indicates the maximum applicable capacity when using a 4pole lg motor. A variable frequency drive controls the speed, torque, and direction of an ac induction motor. Selecting a conversion table of speed and frequency a conversion table is provided for each capacity. Because the conventional system uses reduction gear, gearing ratio should be changed if the product type is altered. Ac motor, main drive controller assembly, and driveoperator interface 210211.
Failure to follow directions will result in damage to the spindle and the vfd. Another reason to consider the smvector variable frequency drive is the ease of setup. As an onestop drive solution provider ls is ready to offer its own competitive solutions into the general power transmission industry. The ls starvert is7 is a high performance vfd, available in 480v up to 500 hp. Control operation operation function protective function input signal output signal display keypad environment. Now lets take a look at an actual variable frequency drive. Introductiondriving of yarn drum of loom should be controlledin line with main motor. Do not run the air cooled spindles below 7200 rpm pd011. Variable frequency drive ls drive series s100 ie5 ic5 ig5a is7 ip5a iv5. Ensure that the mounting surface can support the drive, mounting hardware, and any usersupplied panel or. User manuals, lg dvd drive operating guides and service manuals.
And, once specified, it must be properly installed to ensure reliable operation. If you have heard terms such as variable speed drive, adjustable frequency drive, adjustable frequency ac drive, variater. These applications include single motor driven pumps, fans and compressors, as well as highly sophisticated multi drive machines. Huge energy savings potential operating centrifugal fans, pumps and compressors vary frequency of electrical. Read this manual carefully to maximize the performance of svig5a series inverter and ensure. External braking resistor available for lg plc masterk proprietary protocol link available up to 96 inverters 1 mbps, maximum 2. Torque boost manualautomatic torque boost operation keypad display 4 digit, 7 segment led keypad. Jsmanuallsig5a frequencyinvertervfds jstechnik gmbh. Nov 18, 2016 starting and stopping a motor can be done with three common methods.
H32 h36 factory default values are set based on otislg motor. It takes fixed voltage and frequency from ac input and converts it to a variable voltage and frequency ac output. Vfds allow for motor speed adjustments to be made to applications that require varying degrees of operation. Brief explaination about working of vfds, benefits and. A variablefrequency drive is a device used in a drive system consisting of the following three main subsystems. Make offer new lg is3 sv037is34 ac drive vsd vfd 3 phase 460v volt 5hp 5 hp 60hz 400hz 20hp 22. Vector control is used on variable frequency drives where high starting torque and full torque at low speed rpm is present. Variable frequency drive technical faq variable frequency. Vfd68 variable frequency drives 230 or 460 vac installation. Normally the ac drive maximum frequency is up to 60hz, and few variable frequency drives even up to 400 hz. Dvfp series variable frequency drive product manual pg. As an example, ac 480v, 60hz supply is applied to the vfd which varies the signal voltage and frequency to have control of the speed.
The ls starvert is7 is a high performance vfd, available in 480v up to 500 hp, providing full torque and precise control. First select an applicable conversion table code from the following tablelist, and next find the table from the section of conversion table in. It provides a comprehensive, highquality, and costeffective solution to rapidly build student knowledge in vfds and their motor applications. It is available in 480 volts from 1 to 30 horsepower. In manual mode you can control the variable frequency drive locally, input socket, the variable frequency drive and the connected motor are controlled via the manual mode, the variable frequency drive, the loc status indicator lights up see figure 2 on page 8.
Lsis and lg make variable frequency vfd ac drives india. The variablefrequency drive training system is a stateoftheart training system specifically designed to introduce students to the basic principles of variablefrequency drives vfds. Variable frequency drives vfd drives worldwide electric. Safety instructions always follow safety instructions to prevent accidents and potential hazards from occurring. Rated capacity v 3vi is based on 220v for 200v class and 440v for 400v class. Warning caution throughout this manual we use the following two illustrations to make you aware of safety. So this entire circuit is called a variable frequency drive. Thank you for purchasing ls variable frequency drives. Another type of variable frequency drive is known as a vector control.