RF541工控模块系统备件
增加的1200mm是EN 999中给出的参数C，并考虑了步幅长度和手臂伸展。否是否是否否否是C类标准中是否给出了具体公式或最小距离？根据C类标准确定最小距离使用此最小距离根据prEN 999中的公式计算最小距离是否可以达到此最小距离？最小距离是否允许人员在危险区域内而不被发现？使用此最小距离以及根据风险采取的补充措施使用该最小距离是否可以缩短总体响应时间，或者是否可以缩短参数C？减少总响应时间和/或减少参数C使用附加或替代保护设备18总停止时间T由两部分组成：T=t1+t2 t1是启动传感功能和输出信号开关设备处于关闭状态之间的最长时间。对于垫子系统，t1=35mS。t2是机器的响应时间，即在接收到来自垫系统的输出之后停止机器或消除风险所需的时间。计算中使用的机器的响应时间需要是最坏情况下的时间。有些机器的响应时间不一致，这取决于操作模式、工件的性质以及启动停止的操作周期点。如果制动器等的磨损会影响响应时间，则应考虑磨损。在某些情况下，可能需要考虑机器控制系统的进一步延迟。计算示例在本示例中，垫子系统与最坏情况下响应时间测量为0.485秒的机器一起使用。使用公式，T=t1+t2=35mS+485mS=520mS=0.520S S=（1600 x 0.520）+1200mm=832+1200mm=2032mm从2032mm到机器底板边缘，需要传感器垫。5.4.2用作周界防护区域内的存在感测系统如果危险周围区域完全封闭在防护周界内，prEN 999的要求可能不适用。在这些应用中，垫子系统检测操作员的存在，以防止操作员在外壳内时重置周界防护系统并重新启动机器。图13注：固定防护装置应符合EN 953、EN 294和EN 811的要求。合适的周界防护系统应为固定防护装置，该防护装置配有检修门，并配有带条件防护装置解锁的联锁开关（见EN 1088）。诸如安全光幕的跳闸装置也可适用于某些应用。需要注意的是，光幕的位置必须根据EN 999进行计算。在这些应用中使用垫子系统时，操作员可接近的整个封闭地板区域应覆盖传感器垫子。危险压力敏感垫固定防护联锁门（带锁）19 5.5固定防护装置固定防护装置的设计应确保除通过垫系统外，无法进入危险区域。防护装置的构造和定位应符合EN 953、EN 294和EN 811的要求。5.6良好的安装设计和防止旁路的措施如果不站在垫子上，就不可能到达危险区域。必须防止从不涉及站在垫子上的位置进入危险区域。这通常需要额外的角板以及管道和线槽的小心定位。这方面的良好实践如图14所示。图14 1。固定防护装置防止进入危险区域，从而使防护装置和传感器之间无法进入。2.倾斜的盖板防止操作员站着避开感应区域在机器底板上。
The increased 1200mm is the parameter C given in EN 999, taking into account stride length and arm extension. No No No No No Is there a specific formula or minimum distance in the Class C standard? Determine the minimum distance according to the Class C standard Use this minimum distance to calculate the minimum distance according to the formula in prEN 999 Can you reach this minimum distance? Does the minimum distance allow people to stay in the hazardous area without being found? Can the use of this minimum distance and supplementary measures taken according to the risk reduce the overall response time, or can the parameter C be shortened? Reducing the total response time and/or reducing the parameter C using additional or alternative protective devices 18 The total stop time T consists of two parts: T=t1+t2 t1 is the longest time between starting the sensing function and closing the output signal switchgear. For mat subsystem, t1=35mS. T2 is the response time of the machine, that is, the time required to stop the machine or eliminate the risk after receiving the output from the cushion system. The response time of the machine used in the calculation needs to be the worst case time. Some machines have different response times, depending on the mode of operation, the nature of the piece, and the point at which the operation cycle starts and stops. If the wear of brakes, etc., affects the response time, wear should be considered. In some cases, further delays in the machine control system may need to be considered. Calculation Example In this example, the mat system is used with a machine that has a worst case response time measurement of 0.485 seconds. Using the formula, T=t1+t2=35mS+485mS=520mS=0.520S S=(1600 x 0.520)+1200mm=832+1200mm=2032mm from 2032mm to the edge of the machine floor, sensor pads are required. 5.4.2 The requirements of prEN 999 may not be applicable if the hazardous surrounding area is completely enclosed within the protective perimeter. In these applications, the mat subsystem detects the presence of the operator to prevent the operator from resetting the perimeter protection system and restarting the machine while inside the enclosure. Note to Figure 13: Fixed protective devices shall comply with the requirements of EN 953, EN 294 and EN 811. A suitable perimeter protection system shall be a fixed guard with an access door and an interlock switch with conditional guard release (see EN 1088). Tripping devices such as safety light curtains may also be suitable for certain applications. It should be noted that the position of the light curtain must be calculated according to EN 999. When using the mat subsystem in these applications, the entire enclosed floor area accessible to the operator shall be covered with the sensor mat. Dangerous pressure sensitive pad fixed protective interlocking door (with lock) 19 5.5 Fixed protective device Fixed protective device shall be designed to ensure that the hazardous area cannot be accessed except through the pad system. The construction and positioning of protective devices shall comply with the requirements of EN 953, EN 294 and EN 811. 5.6 If good installation design and bypass prevention measures do not stand on the mat, it is impossible to reach the hazardous area. It must be prevented from entering the hazardous area from a position that does not involve standing on the mat. This usually requires additional gussets and careful positioning of pipes and trunking. Good practices in this area are shown in Figure 14. Figure 14 1. Secure the guards to prevent entry into the hazardous area so that there is no access between the guards and the sensors. 2. The inclined cover plate prevents the operator from standing on the machine floor to avoid the sensing area.
