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    • 5. 发明专利
    • Safety plc
    • 安全PLC
    • JP2007041654A
    • 2007-02-15
    • JP2005222039
    • 2005-07-29
    • Elan Schaltelemente Gmbh & Co KgJtekt Corpエラン シャルテレメンテ ゲーエムベーハー ウント コンパニー カーゲー株式会社ジェイテクト
    • KAWAMURA MAKOTONIWA KUNIYUKIKATO SUTEMARONIEHAUS MICHAEL
    • G05B19/05G05B9/03
    • G05B19/058G05B2219/15089G05B2219/21155G05B2219/21169Y10T307/826
    • PROBLEM TO BE SOLVED: To raise the frequency of a digital signal to be transmitted on a signal transfer path in a safety PLC higher than that in a conventional way concerning the safety PLC having duplexed power supply circuits. SOLUTION: A system A (a circuit 201) and a system B (a circuit 202) are connected with a signal transfer path L having an MELF resistor R 1 and perform communication via the signal transfer path L. A DC output voltage B_Vcc is normally applied to a point p B . By the above configuration, even when a fault such as short-circuiting occurs in a DC power supply device for supplying the DC output voltage B_Vcc, the DC output voltage B_Vcc of the DC power supply device is not more than 4.0V. Consequently, the resistor value of the MELF resistor R 1 is set down to 2 kΩ even when the rated current of an operation circuit arranged in the system A is 2 mA. Thus, a parasitic capacity constituting a low-pass filter is effectively eliminated from the signal transfer path L. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提高在安全PLC中的信号传递路径上传输的数字信号的频率高于关于具有双工电源电路的安全PLC的传统方式的频率。 解决方案:系统A(电路201)和系统B(电路202)与具有MELF电阻器R 1 的信号传输路径L连接,并通过信号传输进行通信 路径L.通常将直流输出电压B_Vcc施加到点p B 。 通过上述结构,即使在用于提供直流输出电压B_Vcc的直流电源装置中发生短路等故障时,直流电源装置的直流输出电压B_Vcc也不大于4.0V。 因此,即使在系统A中配置的运算电路的额定电流为2mA,也将MELF电阻器R 1 的电阻值设定为2kΩ。 因此,构成低通滤波器的寄生电容被有效地从信号传送路径L消除。版权所有:(C)2007,JPO&INPIT
    • 10. 发明申请
    • METHOD AND SYSTEM FOR THE DETECTION, TRANSMISSION, AND ANALYSIS OF SAFETY - RELATED SIGNALS
    • 用于安全相关信号的检测,传输和分析的方法和系统
    • US20150106476A1
    • 2015-04-16
    • US14493922
    • 2014-09-23
    • ELAN SCHALTELEMENTE GMBH & CO. KG
    • Stephan HOTZJorg KOCHBjorn SCHLOTZHAUER
    • H04L29/06H04L29/08
    • H04L69/16H01H47/002H04L1/06H04L1/22H04L1/243H04L12/40013H04L12/40169H04L67/12
    • The invention relates to a method and a system for detecting, transmitting, and analyzing at least one safety-related signal (S1 . . . Sn), wherein the at least one safety-related signal (S1 . . . Sn) is detected using at least one detection unit (EE1 . . . EEn) and is transmitted to at least one analyzing unit (AE1 . . . AE4) via a radio system (FS). In order to simplify the detection of safety-related signals and improve the transmission thereof via a faulty radio path, at least two safety-related signals (S1, S2) are independently detected and transmitted to the analyzing unit (AE1 . . . AE4) via the radio system (FS) so as to allow a dangerous action to be carried out, and an output signal (FRS) for allowing a dangerous action to be carried out is generated by logically combining the received safety-related signals (S1 . . . Sn).
    • 本发明涉及一种用于检测,传输和分析至少一个与安全相关的信号(S1 ... Sn)的方法和系统,其中所述至少一个安全相关信号(S1 ... Sn)被使用 至少一个检测单元(EE1 ... EEn),并通过无线电系统(FS)发送到至少一个分析单元(AE1 ... AE4)。 为了简化对安全相关信号的检测并改善其经由故障无线电路径的传输,至少两个安全相关信号(S1,S2)被独立地检测并发送到分析单元(AE1 ... AE4) 通过无线电系统(FS),以便允许执行危险动作,并且通过逻辑地组合所接收的安全相关信号(S1 ...)来产生用于允许执行危险动作的输出信号(FRS)。 。Sn)。