ABB控制器MP9-21088K
ABB控制器MP9-21088K
中海德小陈
手机(微信):15306912905
QQ:3004995626
电话:0591-83969954-8003
官网:http://www.zhdfj.com/
为了使三期变频恒压供水自动控制系统与全厂自动控制网络有机地结合起来,**实现对恒压供水系统的运行情况和设备运行进行监视和远程控制,更加安全可靠地实现恒压供水,我们使用PLC进行PID运算和监控。PID闭环反馈控制原理如图3:
图3 闭环控制原理图
图4 PID流程图
PLC的PID运算调节通过该型处理器专用PID指令完成,通过设置各参数即可由PLC完成PID运算调节。PID程序段流程如图4。PID指令必须以相同的时间间隔周期性地执行,可采用计时器,定时中断或实时采样的等方法,此处选用了定时方法;PV是PID指令采样的压力控制反馈值,SP是PID指令的压力控制设定值,KP为PID的比例增益,KI为PID的积分增益,KD为PID的微分增益,这五个控制参数作为主要的PID参数参与控制,确定PID参数时要兼顾系统灵敏性和稳定性,由于我们恒压控制要求和设备的性能条件,参数设定更强调稳定性(及KI),由于微分环节有放大噪声的特点,我们将KD尽量设置得较小;SWM为PID指令转为手动直接调频的开关,SO设定为PID指令的在手动控制输出方式时的输出值,当变频器从PID自控调节转为手动直接调频时,SO替代PID运算结果作为转换时的输出值,将SO设定为控制值就可实现无缝转换,减小变频器运行频率的震荡。DB为PID指令的死区设定值,输出超出死区时PID指令通过自动运算限制输出超出限定范围。
ABB DSQC230
ABB DSQC328 3HAB 7229-1
ABB 3HAB2213-1/ DSQC313
ABB DSQC249B/3HAA3563-AHA/1
ABB Robot DSQC345C 3HAB8101-3
ABB DSQC236G YB560103-CD A
ABB DSQC253 3HNE01695-1
ABB DSQC317 3HAB2220-1
ABB DSQC236C YB560103-CC
ABB DSQC331 3HAB 7215-1
ABB DSQC230 DSQC-230
ABB 3HAB 2213-1/2 DSQC 313
ABB DSQC503 3HAC3619-1
ABB DSQC236G
ABB DSQC266T
ABB DSQC236T YB560103-CE/23
ABB DSQC209
ABB DSQC322 3HAB 59601
ABB 3HAB8101-8/08B DSQC346G #29152
ABB DSQC2498 3HAA3563-AHA
ABB DSQC 236C DSQC236C
ABB 3HAB8802-1/2B DSQC266T USED
ABB YB560103-CE DSQC236T
ABB DSQC324 3HAB5957-1
ABB DSQC346G 3HAB8101-8
ABB DSQC 346G 3HAB8101-8/14A
ABB DSQC-266G
ABB 3HAB7215-1/09 DSQC331 #29398
ABB DSQC 334 3HAB 5845-1 S4C
ABB DSQC 532 3HAC12158-1
ABB DSQC236T YB560103-CE/23
ABB DSQC346G 3HAB8101-8
ABB DSQC202
ABB 3HNE00001 DSQC336#29412
ABB YB560103-CE DSQC236T
ABB DSQC266T 3HAB8802-1/2B
ABB DSQC325 3HAB 2241-1
ABB DSQC336 3HNE00001-1
ABB 3HAB6249-1
ABB DSQC-223 DSQC223
ABB DSQC314B DSQC c314B
ABB DSQC224
ABB DSQC230 YB560103-BN
ABB DSQC322 3HAB5960
ABB DSQC322 3HAB5960-1
ABB DSQC223 3HAB2214-8/4
ABB 3HAB2241-1 DSQC-325
ABB DSQC236C YB560103-CC
ABB DSQC236B YB560103-CB
ABB DSQC223 YB560103BD3
ABB 3HAB8101-8/08D DSQC346G
ABB 3HAA3573-ACA DSQC302
ABB DSQC-236T MYB560103CE24#1
ABB DSQC504, 3HAC5689-1
ABB DSQC245 3HAA3563
ABB DSQC355 3HNE00554-1
ABB 3HAB2214-1/2 DSQC 315
ABB YB560103BD4IO DSQC223
ABB DSQC336 3HNE00001 I/O
ABB YB60103BD4 DSQC223
ABB 3HAB2241-1 DSQC325 #29414
资讯来源:ABB控制器MP9-21088K
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