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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STEIN SOHN E 402.1(1) CIRCUIT
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S400NE CIRCUIT BREAKER 200-400AMP 440VAC 25KA
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HYDAI UMC185 MAGNETIC CONTACTOR 185A COIL VOLTAGE 440VAC
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ABB S6H-D MOLDED CASE SWITCH 800AMP 3POLE SACE ISOMAX S6
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HM-2816 CHECK CIRCUIT METER MADE IN JAPAN
ABB TMAX T5N 400 CIRCUIT BREAKER 400AMP 4POLE 440VAC 36KA
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SIEMENS 3RT1056 MAGNETIC CONTACTOR 215AMP VOLTAGE 220VAC
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SIEMENS 6ES7216-2AD23-0XB0 CPU MODULE 226
SIEMENS 6ES7216-2AD23-0XB0 CPU MODULE 226
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SIEMENS 7KM4212-0BA00-3AA0 SENTRON PAC4200 MULTIMETER VOLTAGE 95-240VAC FASTSHIP
SCHNEIDER ELETRIC LC1F185 P7 POWER CONTACTOR 185A VOLTAGE 220VAC
SCHNEIDER EASYPACT CVS630F CIRCUIT BREAKER 500AMP 440VAC 35KA
ABB TMAX T5N 400 CIRCUIT BREAKER 400AMP 3 POLE 440VAC 36KA
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