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introduction：High frequency cut-off frequency of the sensor The high frequency cutoff frequency refers to the amplitude error in response to the specified sensor frequency（±5%，±10%or±3dB）The highest frequency signal that can be measured within。The high frequency cutoff frequency is directly related to the size of the error value，If the specified error range is large, the corresponding high frequency cutoff frequency is relatively high。So the high frequency cutoff frequency of different sensors...
2016-03-07 Reading quantity 1584
introduction： To preventPLCThe control signal line between and inverter is interfered by space electromagnetic field，Shielding wires may be connected to the outer layer of these control signal wires，To improve the anti-interference ability of the system。This connection must be paid attention to，Select only one ground point for the mask。Whether inPLCOne side，Still on the inverter side。 Generally selected at the signal receiving end，Immediate change...
2016-03-07 Reading quantity 1587
introduction： When the production process requires adjustment of process parameters，Only by increasing（Reduction of）System resistance methods force changes in flow，The motor is always operating under rated conditions，Resulting in a waste of electrical energy。 Frequency conversion energy saving is mainly used in the need to implement AC motor speed changes，Where the drive mechanical characteristics are changed to meet the requirements of the production process，Be used more in...
2016-03-07 Reading quantity 1580
introduction： Short circuit protection is a function of the device connected to the power supply and the load that can effectively disconnect the short circuit point from the power supply when a short circuit occurs on the load side。A device with short-circuit protection，So it must have a certain short-circuit breaking ability；And a device with short-circuit breaking capability，That means it has short-circuit protection。 To the usual empty...
2016-03-07 Reading quantity 1610
introduction： As everyone knows，commonPLC Programmable controller，Input asOC Gate or relay，Very few high speed pulse outputs，But generally have pulse count input interface。We use this feature point，Process or position control of mechanical motion can be easily accomplished through the following configuration。 traditionally，In usePLC When controlling the stepper motor，Usually inPLCmid-addition...
2016-03-07 Reading quantity 1594
introduction： From the current inverter structure analysis，Heat dissipation can generally be divided into the following three types：Natural heat dissipation、Convection heat dissipation、Liquid cooling heat dissipation。 1、Natural heat dissipation For small capacity frequency converters, natural heat dissipation is generally selected...
2016-03-08 Reading quantity 1900
introduction：sensor(English name：transducer/sensor)It is a detection device，Can feel the information being measured，And can feel the information，According to certain rules to transform into electrical signals or other desired form of information output，To satisfy the transmission of information、handle、store、reveal、Recording and control requirements，It is the primary link to realize automatic detection and automatic control。 Sensing technology is called together with computer technology and communication technology...
2016-03-08 Reading quantity 1597
introduction：1 General principles for selecting relays How to choose the relay accurately？One is to do it“Get to know each other”,That is, first of all, the properties of the controlled loop must be controlled one by one for the objects controlled by the relay、Characteristics and requirements for relays should be carefully examined and thoroughly understood。secondly，...
2016-03-08 Reading quantity 1625
introduction： Disc overload protection clutch is signed by friction、Driving disc、Non-metallic elastomer、Friction plate and other parts。 Squeeze the dish spring by adjusting the nut，This pushes and compacts the extruding disc；The friction plate between the disc and the drive disc transfer torque to the adjusted friction force。The ports of the elastic parts are reinforced with metal plates and bolted...
2016-03-08 Reading quantity 1615
introduction：The role of the time relay，Type recognition：Electromagnetic type、Air-damped type、Electrodynamic type、Electronic formula?，A time relay is a relay that starts with an input signal，There is a delay to the contact action，A relay whose delay meets the requirements of accuracy，
2016-03-07 Reading quantity 784
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