A20B-2900-0350/03A 发那科

A20B-2900-0350/03A 发那科

文章采用 PLC和变频器实现电梯常规控制的基础上，利用旋转编码器发出的脉冲信号构成位置反馈，实现电梯的位移控制。通过PLC程序设计实现楼层计数、换速信号、门区和平层信号的数字控制，取代井道位置检测装置，提了系统的可靠性和平层精度。 一、引言 随着城市建设的不断发展，层建筑不断增多，电梯作为层建筑中垂直运行的交通工具已与人们的日常生活密不可分。目前电梯的控制普遍采用了两种方式，一是采用微机作为信号控制单元，完成电梯信号的采集、运行状态和功能的设定，实现电梯的自动调度和集选运行功能，拖动控制则由变频器来完成；第二种控制方式用可编程控制器（ PLC）取代微机实现信号集选控制。从控制方式和性能上来说，这两种方法并没有太大的区别。国内厂家大多选择第二种方式，其原因在于生产规模较小，自己设计和制造微机控制装置成本较；而PLC可靠性，程序设计方便灵活。本设计在用PLC控制变频调速实现电流、速度双闭环的基础上，在不增加硬件设备的条件下，实现电流、速度、位移三环控制。 二、硬件电路 系统硬件结构图如图 1所示，其各部分功能说明如下。

Keyence LK-G37

Keyence LK-G35 LKG35 Sensor Head

KEYENCE LK-G3001P SENSOR W/ LK-GD500 CONTROLLER

KEYENCE LK-G3001P SENSOR W/ LK-GD500 CONTROLLER

KEYENCE LK-G3001P SENSOR W/ LK-GD500 CONTROLLER

KEYENCE LK-G3001P LASER SENSOR CONTROLLER,  *

KEYENCE LK-G3001P LASER SENSOR CONTROLLER

Keyence LK-G3001P Laser Displacement Sensor w/ LK-GD500 Display Panel  

Keyence LK-G3001P

KEYENCE LK-G3001+LK-GD500+ LK-G30,LK-GC2 OP-26401 Laser + KV-U2

KEYENCE LK-G3001 with LK-GD500 Free Ship

KEYENCE LK-G3001 SENSOR With LK-GD500 CONTROLLER

KEYENCE LK-G3001 CONTROLLER LASER SENSOR. MAX OF 2 UNITS 24V DC.

KEYENCE LK-G3001 +LKGD500 DISPLAY UNIT ``NICE`` Fast shipping

keyence LK-G3000 with LK-GD500 2 month warranty

KEYENCE LK-G3000 LK-GD500 Laser Sensor Free Ship

Keyence LK-G3000 LKG3000 Laser Displacement Sensor Controller

Keyence LK-G3000 Laser Displacement Sensor Controller,  , MSRP $5300

KEYENCE LK-G3000 CCD Laser displacement sensor 90 days warranty

KEYENCE LK-G300 1P *  IN A BOX*

Keyence LK-G30+LK-GD500+LK-G3000 Laser displacement sensor

Keyence LK-G30, High Speed CCD Laser Displacement Sensor,   IN BOX, MSRP$ 4800

Keyence LK-G157 Sensor Head, Wide Type, Laser Class 2

Keyence LK-G157 Sensor

KEYENCE LK-G157 HIGH-ACCURACY CCD LASER DISPLACEMENT SENSOR,

Keyence Lk-G152/Lk-G3001/Lk-Gd500 Controller

Keyence LK-G152 Sensor Head Spot Type , Laser Class 2

Keyence LK-G15 LKG15 Sensor Head

Keyence LK-G 87

Keyence LK-C10 Sensor Control Cable FREE SHIPPING!!!

Keyence LK-503 Small Spot CCD Laser Displacement Sensor

KEYENCE LK-503 PHOTOELECTRIC LASER SENSOR ***XLNT***

Keyence LK-501 Laser Display Sensor Head

KEYENCE LK-3101 LASER DISPLACEMENT SENSOR LK3101

KEYENCE LK-3101 LASER DISPLACEMENT Sensor Controller 24VDC

KEYENCE LK-2503 PLC PROGRAMMABLE LOGIC CONTROLLER*XLNT*

Keyence LK-2503 Controller CCD Displacement Sensor

Keyence LK-2111 w/ LK-031 & Extension cable (A1)

Keyence LK-2101, LK-081, CCD Laser Displacement Sensor / Sensor Head *NOS*

Keyence LK-2101 LK-081 Laser Controller CCD Laser Displacement Sensor

Keyence LK-2101 Controller w/ Key

Keyence LK-2101 CONTROLLER CCD DISPLACEMENT SENSOR 142134

KEYENCE LK-2101 CONTROLLER CCD

Keyence LK-2101 CCD Laser Displacement Sensor

KEYENCE LK-2101 / LK-081 CONTROLLER + SENSOR

Keyence LK-2101 ,LK-081 ,RD-50R Laser Displacement Sensor

KEYENCE LK-2101 & LK-081 LASER CCD DISPLACEMENT CONTROLLER+SENSOR+CABLE

KEYENCE LK-2100 controller good in condition for industry use

Keyence LK-2100 Controller 111514

KEYENCE LK-2100 controller

KEYENCE LK-2100 AMPLIFIER

Keyence LK-2011 High-Accurey CCD Laser Displacement Sensor

KEYENCE LK-2011 + LK036 + EXTENSION CABLE LASER DISPLACEMENT SET

Keyence LK-2010 Controller + LK-035 LK2010 LK035

KEYENCE LK-2001/LK-031 LASER DISPLACEMENT SENSOR

KEYENCE LK-2001,LK-031 LASER DISPLACEMENT SENSOR, OMRON PANEL METER

Keyence LK-2001 w/ LK-031 & Extension cable (A1)

Keyence LK-2001 w/ LK-031 & Extension cable (A1)

Keyence LK-2001 LK-031

KEYENCE LK-2001 LASER DISPLACEMENT CONTROLLER

KEYENCE LK-2001 CONTROLLER LASER DISPLACEMENT HI PRECISION 24VDC, LK2001

KEYENCE LK-2001 CONTROLLER LASER DISPLACEMENT HI PRECISION 24VDC, LK2001

Keyence LK-2001 CCD Laser Displacement Sensor controller

Keyence LK2001 + LK031 CCD laser displacement sensor with controller

KEYENCE LK-2001 + LK031 + EXTENSION CABLE LASER DISPLACEMENT SET .TESTED GOOD

KEYENCE LK-2001 & LK-031, Controller + Sensor & Support as photos,Tested sn:1090

KEYENCE LK-2000,LK-030 LASER DISPLACEMENT SENSOR TESTED,WORKING,FREE SHIPPING

KEYENCE LK-2000,LK-030 LASER DISPLACEMENT SENSOR + OMRON K3NX-AD1A-FLK4

KEYENCE LK-2000,LK-030 LASER DISPLACEMENT SENSOR & CABLE TESTED WORKING

KEYENCE LK-2000,LK-030 LASER DISPLACEMENT SENSOR

Keyence LK-2000 Laser Displacement Sensor Controller

KEYENCE LK-2000 + LK030 + EXTENSION CABLE LASER DISPLACEMENT SET

KEYENCE LK-2000 & LK-030 LASER DISPLACEMENT SENSOR + RD-50R & CABLE

KEYENCE LK-081 LASER DISPLACEMENT SENSOR

KEYENCE LK081 LASER DISPLACEMENT HEAD SMALL SPOT

Keyence LK-081 Laser 8601H

KEYENCE LK081 ** **

KEYENCE LK-036 LINEAR POSITION SENSOR LK036

KEYENCE LK-036 LINEAR POSITION SENSOR LK036

KEYENCE LK-036 *  IN BOX*

Keyence LK-031 laser displacement sensor head

KEYENCE LK-031 LASER DISPLACEMENT SENSOR 4-20MA 400MA MAX 40V,  *

Keyence LK-031 Laser Displacement Sensor (A1)

Keyence LK-031 Laser Displacement Sensor

Keyence LK-031 CCD Laser sensor 90 days warranty

Keyence LK-031 CCD Laser Displacement Sensor Ultra-accurate

Keyence LK-031 CCD Laser Displacement Sensor nice

Keyence LK-031 & LK-2001 CCD Laser Displacement Sensor Ultra-accurate

KEYENCE LK-030 Free Ship

Keyence LK 081 Laser Sensor

Keyence LJ-G5001P Laser Sensor Controller  

Keyence LJ-G5001P Laser Sensor Controller Production Date May 2013

KEYENCE LJ-G5001 LASER SENSOR *  IN A BOX*

Keyence LJ-G5001 HCC700156E 2D Laser Displacement Sensor Module

KEYENCE LJ-G5000P Controller, PNP Type

Keyence LJ-G5000 & LJ-G030, Controller+Sensor+Keypad as photos, sn:067/012, dφm

KEYENCE LJ-G200 2D LASER DISPLACEMENT SENSOR JULY 2014

Keyence LJ-G030, Laser displacement sensor without controller, sn:A3800011 dφm

KEYENCE LJ-G030 LASER SENSOR * *

KEYENCE LJ-G030 LASER SENSOR *  IN A BOX*

KEYENCE LJ-3000 Panel Laser Controller

keyence LJ-3000 Free Ship

Keyence LJ-080, Displacement sensor, To change broken cable before use.

KEYENCE LIGHT CURTAIN TRANSMITTER/ RECEIVER SET SL-C12H-T/ SL-C12H-R * *

KEYENCE LIGHT CURTAIN TRANSMITTER AND RECEIVER SET SL-C48HM

KEYENCE LIGHT CURTAIN SL-C36H-T

KEYENCE LIGHT CURTAIN SET PJ-V21R RECEIVER AND PJ-V21T TRANSMITTER

KEYENCE LIGHT CURTAIN RECIEVER SL-C48HM-R

KEYENCE LIGHT CURTAIN RECEIVER SL-C1GH-R

Keyence Light Curtain PJ-V20

Keyence Light Curtain PJ-V20

Keyence Light Curtain Base and Extensions PJ-V20T PJ-V21T   Working

Keyence Light Controller CA-DC20E  

KEYENCE LG81 ** **

KEYENCE LG-80 LASER SENSOR LG80 Free Ship

KEYENCE LF-2500 Digital Laser Controller Free Ship