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v 陕西欣鸿然自动化设备有限公司
v 联系人:宁辉
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限位开关
限制工作机械位置的主令电器。一般于工作机械到达终点时发生作用。故又称终端开关。限位开关的原理和结构与行程开关基本相同,但两者的用途不同。行程开关要控制的是工作机械的行程,而限位开关要控制的则是工作机械的位置,且往往是终端位置或极限位置。例如,龙门刨床控制装置中的限位开关,用于控制刨床工作台的位置。当工作台向一方运动到接近其极限位置时,限位开关便动作,转换控制电路,迫使工作台反向运动,以免发生工作台无限止地朝一个方向运动而脱离机座。
限位开关又称行程开关,可以安装在相对静止的物体(如固定架、门框等,简称静物)上或者运动的物体(如行车、门等,简称动物)上。当动物接近静物时,开关的连杆驱动开关的接点引起闭合的接点分断或者断开的接点闭合。由开关接点开、合状态的改变去控制电路和电机。
通常,把电压和频率固定不变的交流电变换为电压或频率可变的交流电的装置称作“变频器”。该设备**要把三相或单相交流电变换为直流电(DC)。然后再把直流电(DC)变换为三相或单相交流电(AC)。变频器同时改变输出频率与电压,也就是改变了电机运行曲线上的n0,使电机运行曲线平行下移。因此变频器可以使电机以较小的启动电流,获得较大的启动转矩,即变频器可以启动重载负荷。
通过改变电机工作电源频率方式来控制交流电动机的电力控制设备。变频器主要由整流(交流变直流)、滤波、逆变(直流变交流)、制动单元、驱动单元、检测单元微处理单元等组成。通过改变电源的频率来达到改变电源电压的目的,根据电机的实际需要来提供其所需要的电源电压,进而达到节能、调速的目的,另外,变频器还有很多的保护功能,如过流、过压、过载保护等等。随着工业自动化程度的不断提高,变频器也得到了非常广泛的应用·
·在电气控制系统中,位置开关的作用是实现顺序控制、定位控制和位置状态的检测。用于控制机械设备的行程及限位保护。构造:由操作头、触点系统和外壳组成。
在实际生产中,将行程开关安装在预先安排的位置,当装于生产机械运动部件上的模块撞击行程开关时,行程开关的触点动作,实现电路的切换。因此,行程开关是一种根据运动部件的行程位置而切换电路的电器,它的作用原理与按钮类似。
行程开关
行程开关广泛用于各类机床和起重机械,用以控制其行程、进行终端限位保护。在电梯的控制电路中,还利用行程开关来控制开关轿门的速度、自动开关门的限位、轿厢的上、下限位保护。
行程开关可以安装在相对静止的物体(如固定架、门框等,简称静物)上或者运动的物体(如行车、门等,简称动物)上。当动物接近静物时,开关的连杆驱动开关的接点引起闭合的接点分断或者断开的接点闭合。由开关接点开、合状态的改变去控制电路和机构的动作。
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· 数控电火花线切割机床的操作_机床
PV1--电压幅值指示 急停按钮--按下此键,机床运丝、水泵电机全停,脉冲电源输出...然后用鼠标器左键点击,即可选择相应的功能。 现将各种控制功能介绍如下(参见图...
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· 变频器控制水泵实例
摘要:本文简述了水泵变频调速节能原理,对某公司工业水泵采用变频调速节能改造的措施进行了简要分析,论述了水泵采用变频调速装置进行节能改造的应用价值...
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概述
行程开关符号
行程开关按其结构可分为直动式、滚轮式、微动式和组合式。
直动式行程开关
动作原理同按钮类似,所不同的是:一个是手动,另一个则由运动部件的撞块碰撞。当外界运动部件上的撞块碰压按钮使其触头动作,当运动部件离开后,在弹簧作用下,其触头自动复位。
其结构原理如图F1所示,其动作原理与按钮开关相同,但其触点的分合速度取决于生产机械的运行速度,不宜用于速度低于0.4m/min的场所。
直动式行程开关组成
1:推杆 2&4:弹簧 3:动断触点 5:动合触点
滚轮式行程开关
当运动机械的挡铁(撞块)压到行程开关的滚轮上时,传动杠连同转轴一同转动,使凸轮推动撞块,当撞块碰压到一定位置时,推动微动开关快速动作。当滚轮上的挡铁移开后,复位弹簧就使行程开关复位。这种是单轮自动恢复式行程开关。而双轮旋转式行程开关不能自动复原,它是依靠运动机械反向移动时,挡铁碰撞另一滚轮将其复原。
其结构原理如图F2所示,当被控机械上的撞块撞击带有滚轮的撞杆时,撞杆转向右边,带动凸轮转动,顶下推杆,使微动开关中的触点迅速动作。当运动机械返回时,在复位弹簧的作用下,各部分动作部件复位。
滚轮式行程开关组成
1:滚轮 2:上转臂 3&5&11:弹簧 4:套架
6:滑轮 7:压板 8&9:触点 10:横板
滚轮式行程开关又分为单滚轮自动复位和双滚轮(羊角式)非自动复位式,双滚轮行移开关具有两个稳态位置,有“记忆”作用,在某些情况下可以简化线路。
微动开关式行程开关
微动开关式行程开关的组成,以常用的有LXW-11系列产品为例,其结构原理如图F3所示:
1:推杆 2:弹簧 3:动合触点 4:动断触点 5:压缩弹簧
图F1:直动式行程开关 |
图F2:滚轮式行程开关 |
图F3:微动式行程开关 |
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802T-HW1A
802T-HW1B
802T-HW1C
802T-HW1D
802T-HW1E
802T-HW1F
802T-HW1G
802T-HW2
802T-HW2A
802T-HW2B
802T-HW2D
802T-HW3
802T-HW3A
802T-HW6
802T-HW6A
802T-HW6B
802T-HW7
802T-HW7A
802T-HW8
802T-HY56
802T-HY58
802T-HZ
802T-K
802T-K1
802T-K1D
802T-K1E
802T-K1J1
802T-K1N
802T-K1P
802T-K1P1
802T-K1P1E
802T-K1PD
802T-K1PDD5
802T-K1PDJ1
802T-K1PDJ9
802T-K1PDR5
802T-K1PDS6
802T-K1PDV
802T-K1PDY5
802T-K1PE
802T-K1PJ1
802T-K1PJ9
802T-K1PN
802T-K1PN5
802T-K1PNJ1
802T-K1PU
802T-K1PV
802T-K1PY20
802T-K1PY58
802T-K1S6
802T-K1S7
802T-K1T
802T-K1TH
802T-K1TP
802T-K1TP1
802T-K1TPD
802T-K1TPDJ1
802T-K1TPE
802T-K1TPJ1
802T-K1TPV
802T-K1TPY912
802T-K1U
802T-K1UN
802T-K1V
802T-KAD
802T-KD
802T-KE
802T-KGP
802T-KO
802T-KOE
802T-KP
802T-KP1
802T-KP1N
802T-KPD
802T-KPDD5
802T-KPDJ1
802T-KPDJ9
802T-KPDR5
802T-KPDS6
802T-KPDV
802T-KPDY5
802T-KPE
802T-KPJ1
802T-KPJ9
802T-KPN
802T-KPN5
802T-KPNJ9
802T-KPQ4
802T-KPS7
802T-KPU
802T-KPV
802T-KPV1
802T-KPVY512
802T-KPY58
802T-KS6
802T-KS7
802T-KT
802T-KTH
802T-KTP
802T-KTP1
802T-KTPD
802T-KTPDJ1
802T-KTPDV
802T-KTPE
802T-KTPJ1
802T-KTPV
802T-KTPY96
802T-KTY96
802T-KU
802T-KUN
802T-KV
802T-KV1
802T-KY5
802T-KY58
802T-KZ
802T-L1
802T-L1D
802T-L1E
802T-L1S6
802T-L1S7
802T-L1T
802T-L1TH
802T-L1W1
802T-L1W1A
802T-L1W1B
802T-L1W2
802T-L1W2A
802T-L1W2D
802T-L1W3
802T-L1W6
802T-L1W7
802T-L1W8
802T-L1Y58
802T-L2
802T-L2E
802T-L2S6
802T-L2S7
802T-L2T
802T-L2TH
802T-L2U
802T-L2W1
802T-L2W2
802T-L2W2A
802T-L2W3
802T-L2W7
802T-L2Z
802T-N1
802T-N10
802T-N2
802T-N3
802T-N4
802T-NP
802T-NPE
802T-NPJ1
802T-NPN
802T-NPS7
802T-NPTP
802T-NPTP1
802T-NPTP1E
802T-NPTP1V
802T-NPTPE
802T-NPTPJ1
802T-NPTPJ9C
802T-NPTPV
802T-NPTPVE
802T-NPTPVY912
802T-NPTPY912
802T-NPTPY96
802T-NPTPY98
802T-NPU
802T-NPV
802T-NPW1
802T-NPW1A
802T-NPW1B
802T-NPW1E
802T-NPW1F
802T-NPW1G
802T-NPW2
802T-NPW2A
802T-NPW2B
802T-NPW3
802T-NPW4
802T-NPW4A
802T-NPW6
802T-NX115
802T-NX119
802T-NX142
802T-NX159
802T-NX160
802T-NX161
802T-NX162
802T-NX165
802T-NX172
802T-NX202
802T-NX205
802T-NX25
802T-NX305
802T-NX50
802T-NX94
802T-P
802T-PJ1
802T-PN
802T-PS6
802T-PS7
802T-PY58
802T-R1TA
802T-R1TAW1A
802T-R1TD
802T-R1TDW1
802T-R1TDW1A
802T-R1TDW2
802T-R1TDW2A
802T-R1TDW3
802T-R1TDW7
802T-R2TD
802T-R2TDW1
802T-R2TDW1A
802T-R2TDW2
802T-R2TDW2A
802T-R2TDW3
802T-R3TA
802T-R3TD
802T-R3TDW1
802T-R3TDW1E
802T-R3TDW2
802T-R3TDW3
802T-R4TD
802T-R4TDW1
802T-R4TDW2
802T-R4TDW2A
802T-R4TDW3
802T-R5TD
802T-R5TDE
802T-R5TDW1
802T-R5TDW2
802T-R5TDW3
802T-R6TD
802T-R6TDW1
802T-R6TDW2
802T-R6TDW3
802T-R6TDW8
802T-R7TD
802T-R7TDW1
802T-R7TDW2
802T-R7TDW3
802T-R7TDW7
802T-R8TD
802T-R8TDW1
802T-R8TDW2
802T-R8TDW7
802T-R8TDW8
802T-W1
802T-W12
802T-W12A
802T-W12B
802T-W12E
802T-W12F
802T-W14
802T-W15
802T-W16
802T-W16A
802T-W17
802T-W17A
802T-W17B
802T-W18
802T-W18A
802T-W1A
802T-W1B
802T-W1C
802T-W1D
802T-W1E
802T-W1F
802T-W1G
802T-W1H
802T-W1HH
802T-W1J
802T-W1K
802T-W1L
802T-W1M
802T-W1N
802T-W2
802T-W20
802T-W20A
802T-W20B
802T-W20C
802T-W20D
802T-W20E
802T-W20J
802T-W20K
802T-W20L
802T-W20M
802T-W20N
802T-W20P
802T-W25
802T-W25A
802T-W25B
802T-W25C
802T-W25D
802T-W25E
802T-W25J
802T-W25K
802T-W25L
802T-W25M
802T-W25N
802T-W25P
802T-W2A
802T-W2B
802T-W2C
802T-W2D
802T-W2E
802T-W2R
802T-W3
802T-W30
802T-W30A
802T-W30B
802T-W30C
802T-W30D
802T-W30E
802T-W30J
802T-W30K
802T-W30L
802T-W30M
802T-W30N
802T-W30P
802T-W3A
802T-W3B
802T-W3C
802T-W3F
802T-W4
802T-W4A
802T-W4B
802T-W4C
802T-W4D
802T-W4F
802T-W5
802T-W6
802T-W6A
802T-W6B
802T-W6C
802T-W6D
802T-W6E
802T-W6F
802T-W7
802T-W7A
802T-W7B
802T-W8
802T-W9
802T-W9A
802T-WBR
802T-WS
802T-WS1
802T-WS1P
802T-WS1P1
802T-WS1PJ1
802T-WS1PJ9
802T-WS1PN
802T-WS1PN5
802T-WS1PNJ9
802T-WS1PU
802T-WS1PV
802T-WS1PY5
802T-WS1PY58
802T-WS1S6
802T-WS1S7
802T-WS1T
802T-WS1TH
802T-WSP
802T-WSP1
802T-WSP1N
802T-WSPJ1
802T-WSPJ9
802T-WSPN
802T-WSPN5
802T-WSPNJ9
802T-WSPS6
802T-WSPU
802T-WSPV
802T-WSPY56
802T-WSS6
802T-WSS7
802T-WST
802T-WSTH
802T-WSU
802T-X1
802T-X2
802T-X4
802T-X4A
802T-X5
802T-X7
802T-X7J1
802T-X7N
802T-X7NS6
802T-X7S6
802T-X7S7
802T-X7U
802T-X7Y20
802T-X8
802T-X8S6
802T-X8S7
802T-XPLF
802X-A14
802X-A17
802X-A24
802X-A24W1
802X-A24W2A
802X-A27
802X-A34
802X-A37
802X-A4
802X-A44
802X-A47
802X-A4W1
802X-A4W1A
802X-A4W2
802X-A4W2A
802X-A4W3
802X-A4W3A
802X-A4W7
802X-A7
802X-A7W1
802X-A7W1A
802X-A7W2
802X-A7W2A
802X-A7W3
802X-A7W7
802X-AM4
802X-AM4W1
802X-AM4W1A
802X-AM4W2
802X-AM4W2A
802X-AM4W3
802X-AM4W4
802X-AM4W4A
802X-AM7
802X-AM7W1A
802X-AM7W2
802X-AM7W2A
802X-AM7W3
802X-AM7W4
802X-AM7W4A
802X-AM7W4C
802X-B4
802X-B7
802X-BA4
802X-BA7
802X-C4
802X-C7
802X-CM7
802X-D4
802X-D7
802X-H17
802X-H27
802X-H7
802X-H7W1
802X-H7W1A
802X-H7W2
802X-H7W2A
802X-H7W3
802X-K14
802X-K17
802X-K4
802X-K7
802X-L14
802X-L17
802X-L24
802X-L27
802X-NP7
802X-NP7W1
802X-NP7W1A
802X-NP7W2
802X-NP7W3
802X-NX2
802X-WBRA7
802X-WS14
802X-WS17
802X-WS4
802X-WS7
802XR-A3C7
802XR-A3F7
802XR-A4C7
802XR-A4F7
802XR-AC7
802XR-AF7
802XR-AMC7
802XR-AMF7
802XR-BAC7
802XR-BAF7
802XR-BC7
802XR-BF7
802XR-CC7
802XR-CF7
802XR-DC7
802XR-DF7
802XR-H1C7
802XR-H1F7
802XR-H2C7
802XR-H2F7
802XR-HC7
802XR-HF7
802XR-K1C7
802XR-K1F7
802XR-KC7
802XR-KF7
802XR-L1C7
802XR-L1F7
802XR-L2C7
802XR-L2F7
802XR-WBRAC7
802XR-WBRAF7
802XR-WS1C7
802XR-WS1F7
行程开关就是一般所说的限位开关。可以理解为是一组接通或断开的简单电路。
“用来检测物体是否移动到限定的位置”,例如,机床的移动工作台上装撞块,相对不动的床身上装行程开关,当机床工作台移动预先设定的距离后,工作台上的撞块压动床身上安装的行程开关,行程开关断开或接通,就有电信号反应到控制柜中,工作台停止移动或反向移动。
“原理是当物体碰触到限位开关,开关的常开点闭合,常闭点断开,用来控制闭是开关的两种原始状态,常开型一般指没有压下的状态电路是开通的,常闭型一般指没有压下的状态电路是断开的。根据需要来进行选择,开关的常开点断开或常闭点闭合。
802T-
802Tpy
802T
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