福建中立恒自动化设备有限公司
主营产品: 大型DCS系统备件,进口工业机器人备件,大型伺服系统电机驱动器,变频器,传感器,安全栅,编码器,电磁阀,流量计等机械或电气部件产品
0100-00044板卡船舶半导体工控备件优势经销
发布时间:2024-11-10

福建中立恒自动化设备有限公司


输入/输出滞后时间又称系统响应时间,是指PLC部输入信号发生变化的时刻至它控制的有关外部输出信号发生变化的时刻之间的时间间隔,它由输入电路滤波时间、输出电路的滞后时间和因扫描工作方式产生的滞后时间这三部分组成。


输入模块的RC滤波电路用来滤除由输入端引入的干扰噪声,因外接输入触点动作时产生的抖动引起的不良影响,滤波电路的时间常数决定了输入滤波时间的长短,其典型值为10ms左右。


输出模块的滞后时间与模块的类型有关,继电器型输出电路的滞后时间一般在10ms左右;双向晶闸管型输出电路在负载通电时的滞后时间约为1ms,负载由通电到断电时的滞后时间为10ms;晶体管型输出电路的滞后时间一般在1ms以下。


PLC总的响应延迟时间一般只有几十ms,对于一般的系统是无关紧要的。要求输入输出信号之间的滞后时间尽量短的系统,可以选用扫描速度快的PLC或采取其他措施。

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142-0602// AMAT APPLIED 0150-20407 CABLE ASSY, CRYO WATER INTLK

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341-0501// AMAT APPLIED 0020-21863 SHIM,ROTARY FEED THRU .06 THIC

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 9/16-18M SST 45 DEG

156-0501// AMAT APPLIED 3420-01077 INSUL CLAMP KF-50 3/8"THK 2.75

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126-0402// WESTINGHOUSE HQP3050H 3-POLE 50A CIRDUIT BREAKER

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176-0204// ASHCROFT T1001 RESSURE GAUGE

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176-0203// NORGREN R07-100-RNKA VALVE

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173-0203// FUJI EA32 AUTO BREAKER

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344-0503// AMAT APPLIED 0020-40691 SPACER, HINGE

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178-0203// LG BS33 30A 2P 30A CIRCUIT BREAKER

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178-0203// LG GMC-32 CIRCUIT BREAKER 


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