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日期:2018-7-12本文主要简述变频调速器在机械设备中的应用及如何针对控制对象选配变频调速器。机械设备主要是用交流电动机拖动 ,因此变频调速器在机械设备中的应用有一定的广度和深度 。但是机械设备种类繁多,特性不一 。我们只有针对性地解决各类机械设备应用变频器的问题 ,才能充分发挥好变频器的优越性。
一、在机械设备中应用变频调速器目的
(1)满足机械设备的调速功能、
它能满足机械设备中电动机无级调速的要求 ,并在调速过程中实现软起动 加、速、减速 、刹车及关机等需要,在起动和关机中无电冲击和机械冲击 。能对调速中的各种参数预置 从,而完成机械设备的各种功能要求。
(2)提高工程质量和产品质量
由于变频器调速范围大、调速精度高,在机械设备中应用它,可提高工程质量和产品质量 。如 :提高机床机械加工速度、提高传输设备的精度等。
(3)节省电力
在机械设备中配备电动机往往 大“马拉小车”或,者机械设备中电动机在重负荷和轻负荷之间往复工作。应用变频调速器 ,可根据负荷需求功率的大小,实时控制功率的输出,以达到最大的节省电力。尤其在风机、水泵等减力矩负载的应用中,可大量节电。
二、在机械设备中针对控制对象应用变频器
(1)速度
在机械设备中,“速度”本身就是控制对象。很多情况又将速度转化为流量、张力、压力、温度、重力及力矩等等为最终控制对象,因此控制速度是最基本的事情。首先要确定负载的特性 ,是 “恒力矩”还是“恒功率”、“减力矩”。有针对性地选配变频器 ,要确定调速范围的大小、调速的精度、加减速度时间及确定系统的惯量等等 。
(2)位置
防爆电机 (EXPLOSION—PROOFELECTRICMACHINE)在机械设备中有的把“位置”或“角度”等作为控制对象。如机床、机器人、轧棍、电梯、超重机械、调节风门及行车等。变频器用于控制负载位置的特点是从:简单到高级;以转速积分的形式变化;电动机的旋转角度也可以控制 ,控制中根据需要可逆运转 。变频器控制位置的方式有三类 :开环位置控制、闭环位置控制和手动决定位置。
(3)张力
对于造纸、纺织、钢铁及胶卷等卷绕物需要恒张力控制 。张力控制有三种方式 :一是采用转矩电流控制,此法简单方便,但精度差;二是采用张力传感器 ,输入张力与给定转速比较 ,使转速随张力变化 ,达到张力恒定;三是采用拉延的张力控制 。加工物中前后有两个滚筒 ,用两测速传感器去检测前后滚筒转速 ,由两变频器控制使其同步 ,达到恒张力的目的 。
(4)流量
对于液体和气体的流量是通过改变电动机转速来进行控制的。风机、泵的转速特性与转速的平方成正比,变频器可以以开环形式对其控制 ;也可利用流量传感器,输人流量比较给定设置 ,实现高精度流量控制 。
(5)温度
建筑物或加热炉的温度是由热风 、冷风或者燃料的输送所决定的。利用热电偶和热电阻作为测温传感器输,入温度比较给定设置 ,实现闭环温度控制 。但是一般应该应用PID调节器补偿系统惯量。
(6)压力
对于液体、气体往往需要压力控制,压力控制的特点是:要求精度不高;压力与电动机的转速为非线性关系;液体不可压缩,控制中响应速度快;而气体能压缩,压力变化缓慢;压力控制与流量控制密切相关 。用变频器带动泵 ,可实现开环或闭环压力控制 。
三、针对不同类型的机械设备选配变频调速器
(1)传输设备
传输设备及其他恒力矩设备可选用通用变频调速器 ,选用矢量型或v/F型 ,应选择50Hz以下频率使用,以lO 50Hz为好 。高精度的机械设备,可采用测速传感器带反馈实现闭环高精度控制 。
(2)机床设备
机床设备原机械调速系统为恒功率特性 ,即转速越低 ,力矩越大 。由于变频器只能 “恒力矩”,不能增加力矩 ,采用变频器后 ,应保留一定机械减速系统适,当增加电动机功率或电动机极数 ,应选用带 “刹车系统”的矢量型变频调速器,必要时可选用变频器专用电动机 。
(3)风机、水泵
风机、水泵等减力矩负载可采用经济型变频器调速。采用通用变频器调速时 ,应将低频力矩提升降低。在应用中若能够准确测量电动机实际运行的功率可,适当降低变频器的配备容量 。
(4)卷绕设备
一般通用变频器或者较为高档的变频器都有自动减速系统 。在卷绕设备的应用中 ,若要求不高 ,可采用自动减速功能 ;若卷绕设备对恒张力要求高 ,可采用张力传感器或双机转速同步控制 ,进行恒张力控制 。
总之,我们在应用变频器时,应首先掌握其5OHz以下为“恒力矩”特性,50Hz以上为“恒功率”特性,根据应用的目的,针对被控对象,才能在机械设备中应用好变频器,发挥其优越性 。
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NEW MODULE 1 PIECE 7MBR10SA120-70 7MBR10SA12070 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 6MBP50RH-060-01 A50L-0001-0304#S FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 6MBI100L-060-01 6MBI100L060-01 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI300LB-060 2MBI300LB060 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI300J-060 2MBI300J060 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR30NE060 7MBR30NE-060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR75U2A-060 7MBR75U2A060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE EV1265F FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE EV1265M FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE EVK33-050 EVK33050 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBP75NA060 FUJI A50L-0001-0267 #N 7MBP75NA-060 ORIGINAL
NEW MODULE 1 PIECE 2DI75Z-120 2DI75Z120 75A 1200V FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR10SA120J-70 7MBR10SA120J70 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 6MBP75RA060 6MBP75RA-060 FUJI ELECTRIC MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR25UA120 7MBR25UA-120 FUJI IGBT POWER MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI100U4-120 2MBI100U4120 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 2DI100A-120A 2DI100A120A FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE EV1277 30A 1000V FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR15NF120 7MBR15NF-120 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBI50JC060 7MBI50JC-060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI300F-060 2MBI300F060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 1MBI300L-120 1MBI300L120 FUJI MODULE ORIGINAL
FUJI ELECTRIC EA103CM75 USPP EA103CM75
FUJI ELECTRIC NV1X-1604 USPP NV1X1604
FUJI FRN0.2E1S-2J FRENIC MULTI PLC INVERTER DRIVE
1 PC Fuji FTU133B In Good Condition
SEIKI AB12C-0106 60 DAY WARRANTY
FUJI ELECTRIC EA203A-200 USPP EA203A200
NEW MODULE ORIGINAL 1DI30F-050 FUJI LOCATION M
1PCS New Fuji Magnetic Contactor SC-N2S 220VAC
FUJI ELECTRIC 2MBI200J-120 USPP 2MBI200J120
NEW MODULE 1 PIECE 6MBI100N-060 6MBI100N060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI200U4B-120-50 2MBI200U4B120-50 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI75SC-120 2MBI75SC120 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI400F-060 2MBI400F060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI200ND-060-01 2MBI200ND060-01 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI150PC-140 2MBI150PC140 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI100S-120 2MBI100S120 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI100N-120 2MBI100N120 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI100L-120 2MBI100L120 FUJI IGBT MODULE ORIGINAL
FUJI ELECTRIC T40-1A1R USPP T401A1R
FUJI ELECTRIC SA33/10 USPP SA3310
FUJI ELECTRIC T24E-1R USPP T24E1R
FUJI ELECTRIC BU-ESB3020 USPP BUESB3020
FUJI ELECTRIC SC-E3-110VAC USPP SCE3110VAC
FUJI ELECTRIC SA52A-2P-10A NSFP SA52A2P10A
2MBI450VH-120-50 FUJI - Semiconductor - Electronic Component
NEW MODULE 1 PIECE 6MBI100J-060B 6MBI100J060B FUJI MODULE ORIGINAL
FUJI ELECTRIC 4NC1Q0-115/120VAC USPP 4NC1Q0115120VAC
FUJI ELECTRIC B072E USPP B072E
Fuji TPJ-E9S, , TPJE9S, Fast Shipping
FUJI ELECTRIC 2NC1Q0B22 NSPP 2NC1Q0B22
FUJI ELECTRIC RPJ2-06 USPP RPJ206
FUJI ELECTRIC 2RI100G-160 USPP 2RI100G160
Fuji Electric BU-ECA-3080 Breaker 80 Amp 3 Pole ! NEW !
Fuji Electric SA52BUL Circuit Breaker 10AMP 2-Pole 600VAC Factory Sealed ! NEW !
NEW MODULE 1 PIECE 2DI100A-140 GTR FUJI MODULE ORIGINAL
FUJI ELECTRIC FRNF25C1S-2U NSFP FRNF25C1S2U
Push- Lock, Turn-Reset Button AR22VDL-11E3R 1NO+1 NC with LED Lamp FUJI ELECTRIC
Fuji Electric SW-05/G Magnetic Switch Starter Contactor Overload 4-6A NEW
Fuji MD4N-AH Digital Timer 999.9s/99min SD4 FE NEW
FUJI 7MBR25SA120-60 Power Module 25A 1200V 0N003
NEW MODULE CS5F-75 FUJI LOCATION M
NEW MODULE CS5F-150 FUJI LOCATION M
NEW MODULE CS5F-300 FUJI LOCATION M
NEW MODULE 7MBR15SA120B FUJI LOCATION M
NEW MODULE 1MBI200N120 FUJI LOCATION M
NEW MODULE 6MBP75RF-060 FUJI LOCATION M
NEW MODULE 2MBI200VA-060-50 FUJI LOCATION M
NEW MODULE 2MBI100-120 FUJI LOCATION M
NEW MODULE 2DI150A-1K FUJI LOCATION M
NEW MODULE 6MB100L-060ELX FUJI LOCATION M
NEW MODULE 7MBR50UA060 FUJI LOCATION M
NEW MODULE 1DI400M-050 FUJI LOCATION M
NEW MODULE 1MBI1200L-120 FUJI LOCATION M
NEW MODULE 1MBI1400L-120 FUJI LOCATION M
NEW MODULE 7MBR20SA060A FUJI LOCATION M
NEW MODULE 7MBR10KA-060 FUJI LOCATION M
NEW MODULE 6MBI8L-120 FUJI LOCATION M
NEW MODULE 6MBI10S-120-50 FUJI LOCATION M
NEW MODULE 2MBI100NB-120 FUJI LOCATION M
NEW MODULE 6MBI15S-120-02 FUJI LOCATION M
NEW MODULE 2FI300S-140-01 FUJI LOCATION M
NEW MODULE 2DI75Z-120A FUJI LOCATION M
NEW MODULE 2MBI200F-120 FUJI LOCATION M
[Fuji Electric] NP1X1606-W Digital Input Module Fuji PLC EMS/UPS Fast Shipping
NEW MODULE 6MBP75RA060-01 FUJI LOCATION M
NEW MODULE 6MBP75RH-060-01 FUJI LOCATION M
NEW MODULE 7MBI50JC060 FUJI LOCATION M
NEW MODULE 6MBI100L-060-01 FUJI LOCATION M
NEW MODULE 7MBR50LC060 FUJI LOCATION M
NEW MODULE 2MBI300J-060 FUJI LOCATION M
NEW MODULE 6MBI100F-060 FUJI LOCATION M
NEW MODULE 2MBI100J-120 FUJI LOCATION M
NEW MODULE 7MBR15NE120 FUJI LOCATION M
NEW MODULE EV1265F FUJI LOCATION M
NEW MODULE 2MBI50P-140 FUJI LOCATION M
NEW MODULE 6MBI100J-060B FUJI LOCATION M
LOT OF 20 FUJI ELECTRIC BZOWIB *NEW IN A FACTORY BAG*
LOT OF 2 FUJI ELECTRIC CP32D-1W *NEW*
FUJI ELECTRIC THERMAL OVERLOAD RELAY TR-6N/UL *NEW IN BOX*
FUJI ELECTRIC SJ-OWG/X MAGNETIC SWITCH 200V 50/60HZ 4A*NEW IN A BOX*
1pcs New FUJI IGBT Module 2MBI200U4H-120-50
FUJI ELECTRIC CABLE 50975-1197 *NEW IN BAG*
1 PC New Fuji Power Module 7MBR50SB120H-70 7MBR50SB120H70 In Box
FUJI CP33FM/10 *NEW IN BOX*
LOT OF 9 FUJI ELECTRIC CP32D *NEW*
LOT OF 15 FUJI ELECTRIC AFa-30 *NEW*
FUJI ELECTRIC 2MBI200NB-120 **
FUJI FVR-G5 DRIVE TYPE:FVR075G5S-4 SN:BX0061S SOURCE AC400 460V 50/60HZ
FUJI ELECTRIC NJ-Y16-R16 NJY16R16 DIGITAL OUTPUT MODULE
Fuji Electric Transistor Module 2MBI300N-060 New #69829
FUJI ELECTRIC TR-6N-54-80A NSFP TR6N5480A
FUJI ELECTRIC 2MBI150SC-120 USPP 2MBI150SC120
Fuji Denshi FMP-3TH Board NEW
FUJI ELECTRIC CP32PI-7W1 CIRCUIT PROTECTOR *NEW IN A BOX*
NEW MODULE 6MBP50NA060 FUJI LOCATION M
NEW ORIGINAL MODULE 7MBR50NE060 7MBR50NE-060 FUJI LOCATION M
NEW MODULE 7D150A-050EHR FUJI LOCATION M
NEW MODULE 6MBP50RTF060-01 FUJI LOCATION M
FUJI ELECTRIC PROXIMITY SWITCH PE-B7D *NEW IN FACTORY BAG*
FUJI ELECTRIC PLC CARD RACK CHASSIS VISTAC-1000-2D/C VT-1000-2D/C
FUJI ELECTRIC PLC CARD RACK CHASSIS VISTAC-1000-2D/TYPE-D VT-1000-2D/TYPE-D
FUJI ELECTRIC SA53H/15 USPP SA53H15
Fuji Electric pc board UMI5A-D #23182
Fuji Electric pc board UMI5A-C #23183
FUJI ELECTRIC FE CIRCUIT BOARD CARD VI-SCPU2B F770-62-08 (3) B
FUJI NP1PS-32 CPU MODULE
Fuji Electric Module 6MBP50RA120-01 #48368
FUJI VME IS70B SERVO BOARD DF9200143-BO,JZMMC-IS70B
Fuji Servo Amplifier RYC201D3-VVT2 FALDIC " Mint " FREE FAST SHIPPING!
Reliance Electric 0-56307 DC drive Board includes Fuji EVK31-50 Transistor
FUJI SZ-A22 / SH-4 CONTACTOR NEW IN BAG
Fuji Servo Amplifier RYC401D3-VVT2 FALDIC " Mint " FREE FAST SHIPPING!
FUJI PXW-4 PXW4TCY1-1V000 TEMPERATURE CONTROLLER POWER ON TESTED
FUJI X0023PA-6 VME MVME SERVO CONTROL BOARD
Fuji Electric DB 2.2-2 Power 0.4kW Restistance 40 OMHS Ser No 0X090R3
NEW FUJI ELECTRONICS FM6DB1-03TNX AS INTERFACE
Fanuc A14-0061-B107-01 Input Unit w/Fuji FMC-3 Magnetic Contactor
FUJI VME-520 MCIF-16 PULLED FROM WORKING MACHINE
FIJI ELECTRIC TRANSISTOR POWER BLOCK MODULE MODEL ET1266M (5 AVAILABLE)
Fuji Electric Operating Handle N-41A-Q, NEWO
FUJI 600W 180A MODULE A50;-0001-0333
FUJI ELECTRIC FVR-G7S FVR008G7S-2 BRAND NEW
FUJI ELECTRIC KEYBOARD CONTROL BOARD F770 61 27
FUJI ELECTRIC KEYBOARD CONTROL BOARD F770 60 72
FUJI ELECTRIC SEQ AND TEMP CARD F770 60 91
FUJI ELECTRIC SEQ AND TEMP CARD F770 60 92
FUJI ELECTRIC POWER CARD F770 61 10
FUJI BU-FSB3125 CIRCUIT BREAKER 100A 3P 00
NEW MODULE 1 PIECE 1DI200H-055 1DI200H055 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 6MBP50NA060 6MBP50NA-060 A50L-0001-0304 FUJI MODULE ORIGINAL
Fuji NEW PE-G4D PLC Inductive Proximity Switch Sensor 10-30VDC 3-Wire
Brand New FUJI A6CON1 IGBT Inverter Connector PLC FREE SHIP (AA0)
FUJI AH164-P2B11 Pushbuttons Selectors Pilot Lights Buzzers PLC FREE SHIP (AA0)
Brand New FUJI PEW-33L/NA Electric Proximity Switch PLC FREE SHIP (AA0)
Fuji Electric 6DI30A-120 Power Transistor Module Semi-Conductor
Fuji Electric BU3EHC-015L 15 Amp Circuit Breaker 3Pole 600V
NEW MODULE 1 PIECE 2DI100A-140 2DI100A140 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 2MBI150NC-120 2MBI150NC120 FUJI IGBT MODULE ORIGINAL
NEW MODULE 1 PIECE 6MBP75RA060 6MBP75RA-060 6MBP75RTA060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7D150A-050EHR FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR50NF-060 7MBR50NF060 FUJI MODULE ORIGINAL
FUJI UG430H-VH4 TOUCH SCREEN GLASS DIGITIZER MEMBRANE LCD DISPLAY PLC NEW
NEW GENUINE MODULE 1DI200H-055 FUJI SAME DAY SHIPPING! LOCATION SSS(1)
NEW MODULE 6MBP20RTA060-01 A50L-0001-0326 FUJI LOCATION M
NEW MODULE 2MBI150KB-060 A50L-0001-0261#AFUJI LOCATION M
NEW MODULE 2DI150Z-120 FUJI LOCATION M
NEW MODULE 7MBR50SB060 FUJI LOCATION M
NEW MODULE A50L-0001-0109 FUJI LOCATION M
NEW MODULE 1D200A-020 FUJI LOCATION M
NEW MODULE 2DI30Z-100-E FUJI LOCATION M
NEW MODULE 6MBI15L-120 FUJI LOCATION M
NEW MODULE CR6L-250 FUJI LOCATION M
NEW MODULE FUSE CR2l-300 FUJI SAME DAY SHIPPING! LOCATION BOX#48
Fuji Electric 3 Phase Geared Motor- Type BSSG302P63
Fuji PCB UM20B-A07 un
NEW MODULE 2MBI300LB-060 FUJI LOCATION M
NEW MODULE 7MBR10SA-140 FUJI LOCATION M
NEW MODULE 2DI150M-140 FUJI LOCATION M
NEW MODULE 2MBI200N-060 FUJI LOCATION M
NEW MODULE 6DI85A-050 FUJI LOCATION M
NEW MODULE FUJI A50L-0001-0126 LOCATION M
NEW MODULE 6MBI8L-120 FUJI LOCATION M
NEW MODULE 1DI300Z-120 FUJI LOCATION M
FUJI ELECTRIC BU-ESB2020 USPP BUESB2020
FUJI ELECTRIC PZCFAY81 NSFP PZCFAY81
FUJI ELECTRIC 2DI-50A-120 USPP 2DI50A120
NEW MODULE 7MBR10SA120J-50 FUJI LOCATION M
GE FANUC FUJI EVL31-050 EVL31 TRANSISTOR
FUJI ELECTRIC EVL31-060 USPP EVL31060
NEW MODULE 6MBP20RTA060 FUJI LOCATION M
NEW MODULE 7MBR10SA120J-70 FUJI LOCATION M
NEW MODULE 7MBR20SA060-70 FUJI LOCATION M
NEW MODULE 2MBI150NC-120 FUJI SAME DAY SHIPPING! LOCATION BOX#21
FUJI ELECTRIC Inverter FVR-K7S FVRK7S FVR002K7S-2
DATA LOGIC RT7-512 Sensors - Photodetectors V220 50-60Hz
NEW MODULE 2MBI150ND-060-01 FUJI LOCATION M
NEW MODULE A50L-0001-0327 6MBP50RTA-060-01 FUJI LOCATION M
NEW MODULE 6DI85A-060 A50L-001-0178 FUJI LOCATION M
Fuji Electric SA32 One Year Warranty !
NEW MODULE 6DI75M-050 FUJI LOCATION M
NEW MODULE 7D100A-050EHR FUJI LOCATION M
Mazak Fuji Electric SC-N3 [65] Contactor SC65BAA
Mazak Fuji Electric SC-N3 [65] Contactor SC65AA
NEW MODULE 1 PIECE 6D100A-050ELX 6D100A050ELX FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR50SB060 7MBR50SB-060 FUJI MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR25SA-120-50 FUJI IGBT POWER MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR25UA120 FUJI 7MBR25UA-120 IGBT POWER MODULE ORIGINAL
NEW MODULE 1 PIECE 7MBR30NE060 7MBR30NE-060 FUJI ORIGINAL
NEW MODULE 1 PIECE 2MBI200U2A-060 2MBI200U2A060 FUJI IGBT MODULE ORIGINAL
FUJI NEW 7MBR25NE120 PLC TRANSISTOR IGBT MODULE 1200V / 25A / PIM
NEW MODULE 1 PIECE 7MBR50UA060 7MBR50UA-060 FUJI MODULE ORIGINAL