求西门子plc200恒压供水编程实例(梯形图)急急急......望高手指点!

2024-11-19 16:32:05
推荐回答(4个)
回答1:

恒压供水PLC控制,东莞恒压供水厂家,东莞恒压供水

本机供五台电机,四大一小,其中五号为小泵,只进行变频,不进行工频,但是在手动时可手动工频,四个大泵要进行工频/变频转换。本机,手动和自动控制,相互独立,相互不干扰,东莞自动化公司-精一控自动化公司

本机自动工作流程

正常工作流程

五档:

开机上电后,如果压力低于允许范围(+/- 0.04MPa),开启5#泵变频运行,此时只有5#泵变频运行

一档:

5#泵变频运行时,如果压力低于压力下限(压力设定值-0.04MPa),且变频泵频率达到50HZ,10S后,复位5#号变频,开启1#变频,此时只有1#泵变频运行

二档

1#泵变频运行时,如果压力低于压力下限且变频泵频率达到50HZ后超过10S,复位1#变频,当复位一号变频0.5S后,开启1#工频及开启二号变频(这样做的目的是错开同一台泵变频到工频的转换),此时有一号泵工频,二号泵变变频运行。

三档

当1#工频,2#泵变频运行,压力低于压力下限且变频泵频率达到50HZ后,超过10S,复位2#变频,当复位2#变频0.5S后,开启2#工频及开启3#变频,此时1,2#泵工频,三号泵变频运行

四档

当1#,2#工频,3#变频运行时,压力低于压力下限且变频泵频率达到50HZ后,超过10S,复位3#变频0.5S后,开启四号变频,此时有1#,2#,3#工频,四号变频运行。

当产生故障时

五档

5#运行时,5#产生故障,此时压力低于下限,变频泵频率达到50HZ后,超过10S

(1)1#泵没有故障转到一号泵变频运行;

(2)当5# -1#泵都有故障,2#泵没有故障时,转到2#变频运行

(3)当5#-1#-2#泵都有故障,3#泵没有故障时,转到3#泵变频运行

(4)当5#-1#-2#-3#泵都有故障时,4#泵没有故障时,转到4#变频运行

一档

当1#泵变频运行时,压力低于压力下限且变频频率为满频50HZ时,超过10S,此时如果2#泵没有故障,复位1#变频,当复位一号变频0.5S,开启2#变频,1#工频此时只由1#工频,2#变频运行

如果2#泵有故障,3#泵没有故障,复位1#泵变频0.5S后,开启3#泵变频及1#泵泵工频,此时1#泵工频,3#泵变频工作

如果2-3#泵都有故障,4#泵没有故障时,复位1#泵变频0.5S后,开起4#泵变频及1#泵工频此时1#泵工频,4#泵变频运行

如果2-3-4#泵都有故障,保持1#泵变频不变此时只有1#泵变频运行

二档

当2#泵变频运行,压力低于压力下限且变频泵频率达到50HZ后,超过10S

(1)3#泵没有故障时,复位2#变频,当复位2#变频 0.5S后,开启2#工频及开启3#变频,此时可能

      a: 1,2#泵工频,三号泵变频运行

      b: 2#泵工频,三号泵变频运行

(2)3#泵有故障,4#泵没有故障时,复位2#变频,当复位二号变频  0.5S后,开启2#工频及开启4#变频,此时可能运行情况

     a : : 1,2#泵工频,4号泵变频运行

     b  : 1#工频,4号泵变频运行

   c : 4号泵变频运行

(3)当2-34都有故障时,保持2#泵变频不变,压力低于压力下限且变频泵频率达到50HZ后,超过10S

        1#工频没有起动时起动1#工频,压力还不够且2# 

工频没有运行时,延时启动2#工频;

三档

当3#变频运行时,压力低于压力下限且变频泵频率达到50HZ后,超过10S,此时

(1)4#泵没有故障时,复位3#变频0.5S后,开启四号变频

  (2) 4#泵有故障时,3#变频运行不变,压力低于压力下限且变频泵频率达到50HZ后,超过10S

      A:如果1#没有故障,1#工频没启动开启1#工频,1# 工频运行后,如果压力低于压力下限且变频泵频达到50HZ后,超过10S,2#工频没启动开启2#工频

四档

当四号泵变频运行时,突然4#泵产生故障,此时如果1或2或3#泵有一台泵工频运行时,

A:1#泵没有故障时,复位1#泵工频0.5S后,切换到1#泵变频运行,如果此时压力低于压力下限且变频泵频率达到50HZ后,超过10S,此时又进行下一轮循环(这时可能产生的问题是:如果压力始终达不到,会1#变频,复位2#变频开启1#工频,复位2#变频,开起3#变频这样一个水泵很快进行轮循的过程,但轮循一次后会停下来

        B:1#有故障时,2#没有故障时,复位2#泵工频0.5S后,切换到2#泵变频运行,如果此时压力低于压力下限,且变频泵频率达到50HZ后,超过10S,此时又进行下一轮循环

       C :如果1,2#都有故障,3#没有故障时,复位3#泵泵工频,切换到3#泵变频如果4#变频运行时压力低于压力下限且变频泵频率达到50HZ后,超过10S,1#工频没有起动时起动1#工频,压力还不够时2,及3没有工频启动时,延时依次开启;当仅且只有1台泵变频运时,突然那一台泵产生故障,机器恢复到刚开始工作循环状态

机器复位过程

四档

当压力超过压力下限,且变频器输出频率为0时延时5S后先复位1#工频,在2-3 #工频延时停掉

三档

当压力超过压力下限,且变频器输出频率为0时延时5S后先复位1#工频,在2-#工频延时停掉

二档

当压力超过压力下限,且变频器输出频率为0时延时5S后先复位1#工频

★当仅且在1-2-3#泵中只有1台泵是变频运时,压力超过压力下限,且变频器输出频率为0时延时5S,开启5#泵

★8小时轮换工作

一档

1#泵变频运行超过8小时,复位1#变频,开启2#变频

二档

2#泵变频运行超过8小时,且3#泵没有运行时,复位

2#变频,开启3#变频

三档

3#泵变频运行超过8小时,且4#泵没有运行时,复位

3#变频,开启4#变频

变频器频率(上升/下降)过程PLC程序

东莞精一控自动化公司恒压供水控制东莞自动化公司 

回答2:

需要恒压控制算法

回答3:

yiloushuo de dui a

回答4:

这种程序网上是不会有人免费给你的,还是自己想办法做一下吧。

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