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。
以下链接皆有货
ABB 9F73G832043G PCB CARD 3G83-20/4
FOMOCO LV4T-19H378-AD MOD BRKT ASY TRLR ELE
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KONGSBERG SIMRAD 37734108 TRACKBALL UNIT
ABB 16-501276-01G(A) BAT BOARD
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CSI 429 FLOATING RS232C INTERFACE 85084A
CSI 461 RGB INTERFACE CARD 85015C
CSI 464 EARTH FAULT DET.CARD 84066A
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Westinghouse A201K3CA Size 3 Style 276A281G01 Motor Starter
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STAHL ICS 1000 9201 PCB CARD 9201/04-34-24
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UZUSHIO ELECTRIC UG-FD1 1084 FREQUENCY DETECTOR
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GOSSEN LEISTUNGS-MESSUMFORMER 4824-C5190H07
PEPPERLFUCHS KFDO-RSH-1.4S.PS2 RELAY MODULE 224579
NABCO K68058-1C PCB CARD
SEITE B 000/06154 A PCB CARD
Norgren 20AG-X4G/PJ100 Hydraulic Regulator Pressure Valve
Mitsubishi FX1n-24MR-ES/UL, FXon-8EYR-ES/UL, FXon-3A
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CEWE INSTRUMENT DI02
DELTA SUB_1G DATA COLLECTOR PPM N1_SB1
Advantech PCI-1716 Pcb Card
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Beckhoff KL9050 EtherCAT Rack
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SIEMENS 15499-147 FAN ASSY APACS QUADLOG
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RIDING DHE3205-SF/AG20 AC SERVO DRIVE
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ALLEN-BRADLEY 1794-ACNR15 SER.C REDUNDANT MEDIA ADAPTER
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ALLEN-BRADLEY 1794-IF2X0F2I SER.A ISOLATED ANALOG COMBO
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MEASUREMENT TECHNOLOGY MTL5314 TRIP AMPLIFIER
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SULZER 112.017.134.200 001A STARTING FSA C19 PCB CARD
SULZER 112.017.111.200 001A FSA C21 ALARM RELAY CARD
SULZER LIP 112.017.234.200 004D LOAD INDICATOR POSITION PCB CARD
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TELEMECANIQUE XPS-MP SAFETY RELAY
SCHNEIDER ELECTRIC XPS-AV SAFETY RELAY
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MASIBUS -DI-16
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K760383 H01 Safety Circuit Board LCE ADOS
PEPPERLFUCHS 540093 AH 90271-F11EE-G011
K433956 H03 Pcb Card MCC85/ADPT03