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