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introduction：Danfoss inverter full name“Danfoss AC variable frequency governor”，Mainly used for three-phase asynchronous AC motor，Used to control and adjust motor speed。Danfoss inverter is a inverter product produced by Danfoss Group in Denmark，So far，Already have40Years of history，Products have covered all low-voltage markets。Danfoss inverter always adhere to customer-oriented research and development to ensure the stability of the product、innovativeness、flexibility，This makes Danfoss drives a leader in the global inverter market，Danfoss has also become the worlds leading supplier of frequency converters。 1968years，Denmark Danfoss company as the worlds first large-scale production of inverter manufacturers，Began its brilliant course in the field of automation control。40For years，Its transmission control products have been upgraded through multiple series，Constantly bring innovation and surprise to people，Always at the top of the industry in the world。After entering the Chinese market，Danfoss inverter in medicine、spin
2017-07-19 Reading quantity 194
introduction：Emerson frequency converterBe fully known as“Emerson AC variable frequency governor”，It was developed by Emerson、Give birth to、Sales of well-known inverter brand。It is mainly used to control and adjust the speed of three-phase AC induction motor，With its stable performance、Rich combination features、Good dynamic characteristics、Super overload capability and unparalleled flexibility，It occupies an important position in the inverter market。Widely used in various industrial fields，Especially in elevators.、spin、Machine tool、Industries such as lifting and shipping and ports。 Common model： EV1000 series：Small size，Easy to operate，Suitable for plastic machinery、Textile machinery、Tobacco machinery、Ceramic machinery、Pharmaceutical machinery Food machinery、Printing machinery、Packaging machinery、Central air conditioning and other special equipment。 EV2000 series：Wide power range，More rich functions，Suitable for fan、Energy saving transformation of water pump；Transfer load、Variable speed drive for potential energy loads；A
2017-07-18 Reading quantity 314
introduction：At present，The vast majority of universal frequency converters are alternating—straight—Ac frequency converter，It is usually used especially for voltage converter，Its main loop diagram（See picture1.1），It is the core circuit of the frequency converter，By the rectifying loop（Hand in—Direct exchange），Dc filter circuit（Energy consumption circuit）And inverter circuit（straight—Meet transformation）Make up，Of course, it also includes finite current circuits、Brake circuit、Control circuit and other components。 1）Rectifier circuit As shown in the figure，Universal frequency converterThe rectifier circuit is composed of three phase bridge rectifier。Its function is to rectify the power supply，After the intermediate DC link flat wave, the DC power supply is provided for the inverter circuit and the control circuit。The three-phase AC power supply is generally introduced into the input end of the rectifier bridge through a network of absorbing capacitors and varistors。Role of network，It absorbs high frequency harmonic
2017-07-18 Reading quantity 302
introduction： 1)The arithmetic circuit will be external to the speed、Torque and other instructions also detect the current of the circuit、The voltage signal is compared，Determine the output voltage of the inverter、frequency。 2)voltage、Current detecting circuit，Detection voltage isolated from main loop potential、Current scheduling。 3)Driving circuit The circuit that drives the main circuit device，It is isolated from the control circuit to enable the main circuit device to operate、shutoff。 4)I/0Input/output circuit In order to drive better human-computer interaction，The frequency converter has multiple input signals (Such as running、Multi-speed operation, etc)signal，There are also outputs for various internal parameters“Such as current、frequency、Protection action drive, etc)signal。 5)Speed detecting circuit To the speed detector mounted on the asynchronous motor shaft machine (TG、PLGEtc.)The signal is the speed signal，Feed operation loop，According to the command and operation can make the motor run at
2017-07-18 Reading quantity 310
introduction：Planetary gear motor can also be called planetary gear reducer，Compared to other speed reducers，Planetary gear motors are known for their small size，High transmission efficiency，Wide deceleration range，Many advantages of high precision are widely used in all walks of life。Especially used in servo motors、Stepper motor、Dc motor and other transmission systems。It can ensure the premise of precision transmission，It is mainly used to reduce speed, increase torque and reduce load/The moment of inertia ratio of the motor。
2017-07-14 Reading quantity 222
introduction：Functional characteristics of programmable logic controller： (1)High reliability。On account ofPLCMost are single-chip microcomputers，Therefore, the integration is high，In addition, the corresponding protection circuit and self-diagnosis function，The reliability of the system is improved。 (2)Easy to program。PLCThe programming mostly uses relay control ladder diagram and command statement，The number is much smaller than that of microcomputer instructions，decentering、Top gradePLCoutside，Average smallPLConly16Strips or so。Simple because of the trapezoid image，So its easy to master、Easy to use，It doesnt even require computer expertise，You can program it。 (3)Flexible configuration。On account ofPLCAdopt building block structure，Users simply combine，The function and scale of the control system can be flexibly changed，therefore，Can be applied to any control system。 (4)input/The output function modules are complete。PLCOne of the greatest advantages，Its for different field signals(Such as DC or AC、Switching value、Digita
2017-07-14 Reading quantity 319
introduction：Electromagnetic speed regulating motor speed regulating controller It is composed of a shell and a movement。Movement by speed regulating potentiometer、preamplifier、thyristor、Electromagnetic clutch、Velocity negative feedback circuit、Tachometer generator, logic conversion circuit and photoelectric coupling isolation trigger are composed。The signal after the preamplifier is sent to the photoelectric coupling isolation trigger through logical conversion，Which sends a trigger signal to trigger the thyristor。The shell in question is a cave shaped box，It is combined with the movement to form a drawer structure。The utility model overcomes the phenomenon that triggering is invalid due to the large change of triggering current of thyristor。Conducive to continuous production occasions。
2017-07-13 Reading quantity 319
introduction：Servo driver（servo drives）Also known as...“Servo controller”、“Servo amplifier”，It is a controller used to control servo motors，Its effect is similar to that of a frequency converter on an ordinary AC motor，Part of the servo system，Mainly used in high precision positioning system。Generally by location、The servo motor is controlled in three ways: speed and torque，Achieve high precision driveline positioning，At present, it is a high-end product of transmission technology。 LUSTServo controller maintenance： Maintenance process： First step：Know the fault condition of the product。 The second step：Based on the users fault description，Analyze the causes of such failures。 The third step：Open the product for repair，Identify damaged devices，Analyze the feasibility of repair and recovery。 Step four：According to the working position of the damaged device，Read and analyze the circuit working principle，Find out the cause of the damaged device。 The fifth step：Seek user maintenance advice，Confirm repair price and delivery dat
2017-07-13 Reading quantity 284
introduction：Main uses of spring machine controller: This controller is equipped with a servo motor、Loaded on various spring making machines。 Spring machine controllerpeculiarity: one、Everyone is usingLCDorCRTThe screen displays messages in both Chinese and English,At a glance two、Film type operating keys,Simple operation。 three、MPGHand wheel manual control,precision、expediency。 four、Infinite number of program inputs,Various types of special springs can be manufactured。 five、Spring machines are used for a variety of special functions,Vary much、Fast speed、Rapid yield。 six、Servo motor precise control,Auxiliary probe function,High precision、Product stability。 seven、Program store function,Old programs can be read and used directly，Easy shunting、fast。 eight、With external mechanism such as spring machine inspection machine、Automatic wire rack and other connection functions。
2017-07-13 Reading quantity 320
introduction：It is to improve the power factor of the grid in the electronic power supply system，Reduce the loss of power supply transformers and transmission lines，Improve power supply efficiency，Improve the power supply environment。 Reactive power compensation controllerWorking principle: The power output of the grid consists of two parts：One is active power；The second is reactive power。Direct energy consumption，Convert electrical energy into mechanical energy，Heat energy，Chemical energy or sound energy，We can do work with these，This part of the power is called active power；No power consumption，It just converts electrical energy into another form of energy，This can be used as an essential condition for electrical equipment to work，and，This energy is periodically converted with electrical energy in the grid，This part of the power is called reactive power，Such as electromagnetic components to establish magnetic fields occupy electrical energy，The electrical energy occupied by the capacitor building site。When a curren
2017-07-12 Reading quantity 282
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