MVME172-343A模塊控制器
在這些應(yīng)用中，墊子系統(tǒng)檢測(cè)操作員的存在，以防止操作員在外殼內(nèi)時(shí)重置周界防護(hù)系統(tǒng)并重新啟動(dòng)機(jī)器。圖13注：固定防護(hù)裝置應(yīng)符合EN 953、EN 294和EN 811的要求。合適的周界防護(hù)系統(tǒng)應(yīng)為固定防護(hù)裝置，該防護(hù)裝置配有檢修門(mén)，并配有帶條件防護(hù)裝置解鎖的聯(lián)鎖開(kāi)關(guān)（見(jiàn)EN 1088）。諸如安全光幕的跳閘裝置也可適用于某些應(yīng)用。需要注意的是，光幕的位置必須根據(jù)EN 999進(jìn)行計(jì)算。在這些應(yīng)用中使用墊子系統(tǒng)時(shí)，操作員可接近的整個(gè)封閉地板區(qū)域應(yīng)覆蓋傳感器墊子。危險(xiǎn)壓力敏感墊固定防護(hù)聯(lián)鎖門(mén)（帶鎖）19 5.5固定防護(hù)裝置固定防護(hù)裝置的設(shè)計(jì)應(yīng)確保除通過(guò)墊系統(tǒng)外，無(wú)法進(jìn)入危險(xiǎn)區(qū)域。防護(hù)裝置的構(gòu)造和定位應(yīng)符合EN 953、EN 294和EN 811的要求。5.6良好的安裝設(shè)計(jì)和防止旁路的措施如果不站在墊子上，就不可能到達(dá)危險(xiǎn)區(qū)域。必須防止從不涉及站在墊子上的位置進(jìn)入危險(xiǎn)區(qū)域。這通常需要額外的角板以及管道和線槽的小心定位。這方面的良好實(shí)踐如圖14所示。圖14 1。固定防護(hù)裝置防止進(jìn)入危險(xiǎn)區(qū)域，從而使防護(hù)裝置和傳感器之間無(wú)法進(jìn)入。2.傾斜蓋板防止操作員站在機(jī)器底板上避開(kāi)感應(yīng)區(qū)域。3.傳感器邊緣的跳閘危險(xiǎn)通過(guò)入口處的斜坡減少。
斜坡還可以保護(hù)連接電纜。可選的周界修剪是漸變截面。4.電纜槽安裝在固定防護(hù)裝置的外部。這可防止其被誤用為進(jìn)入危險(xiǎn)區(qū)域。5.復(fù)位按鈕位于保護(hù)良好的位置，可完全看到機(jī)器。6.墊安裝正確。5.7電氣接口系統(tǒng)提供的保護(hù)取決于系統(tǒng)和機(jī)器之間的正確接口。系統(tǒng)的安全輸出觸點(diǎn)布置為兩個(gè)獨(dú)立的無(wú)電壓N/O觸點(diǎn)對(duì)。端子位置在第6.2節(jié)中給出，額定值在第4.1 2 6 4 5 1 3 20節(jié)中給出。根據(jù)EN 954-1，控制單元符合第3類(lèi)。與其他安全墊和地板一樣，傳感器墊的第3類(lèi)性能無(wú)法在嚴(yán)重機(jī)械損壞或長(zhǎng)期退化導(dǎo)致的故障中實(shí)現(xiàn)。根據(jù)EN 954-1，傳感器墊符合第1類(lèi)。由互連傳感器墊和控制單元組成的系統(tǒng)符合EN 954-1第3類(lèi)的要求。墊系統(tǒng)可用作唯一的保護(hù)措施或與其他措施或裝置（如安全光幕、工作系統(tǒng)）結(jié)合使用。如果協(xié)調(diào)的歐洲“C”標(biāo)準(zhǔn)適用于機(jī)器類(lèi)型，它將包含機(jī)器安全相關(guān)控制系統(tǒng)的要求和指南。EN954-1也提供了指導(dǎo)。重要的是，應(yīng)根據(jù)EN 954-1的適當(dāng)類(lèi)別提供針對(duì)可預(yù)見(jiàn)故障的充分保護(hù)，因此，建議在所有高風(fēng)險(xiǎn)應(yīng)用中使用具有復(fù)制和監(jiān)控最終開(kāi)關(guān)元件（接觸器）的雙通道配置。圖15、16、17和18給出了墊系統(tǒng)的互連示例。21圖15顯示了單接觸器（單通道）、440F-4000P和440F-C4000S應(yīng)用的示例連接圖。電路狀態(tài)-電源打開(kāi)-傳感器墊上不存在-復(fù)位按鈕已操作（如果處于手動(dòng)復(fù)位模式）-機(jī)器啟動(dòng)電路已啟用。
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. Tilt the cover plate to prevent the operator from standing on the machine floor to avoid the sensing area. 3. Trip hazard at the edge of the sensor is reduced by the ramp at the entrance.
The slope also protects the connecting cable. The optional perimeter trim is a gradient section. 4. The cable tray shall be installed outside the fixed protective device. This prevents it from being misused to enter hazardous areas. 5. The reset button is located in a well protected position, and the machine can be completely seen. 6. The gasket is installed correctly. 5.7 The protection provided by the electrical interface system depends on the correct interface between the system and the machine. The safe output contacts of the system are arranged as two independent voltage free N/O contact pairs. Terminal locations are given in Section 6.2 and ratings are given in Section 4.1 2 6 4 5 1 3 20. According to EN 954-1, the control unit complies with category 3. As with other safety pads and floors, the Class 3 performance of sensor pads cannot be achieved in the case of failures caused by severe mechanical damage or long-term degradation. According to EN 954-1, the sensor pads comply with category 1. The system consisting of interconnected sensor pads and control units complies with the requirements of EN 954-1, class 3. The cushion system can be used as the only protective measure or in combination with other measures or devices (such as safety light curtain and working system). If the harmonized European "C" standard applies to machine types, it will contain requirements and guidelines for machine safety related control systems. EN954-1 also provides guidance. It is important that adequate protection against foreseeable faults should be provided in accordance with the appropriate categories of EN 954-1, therefore it is recommended that a dual channel configuration with duplicated and monitored final switching elements (contactors) be used in all high-risk applications. Figures 15, 16, 17, and 18 show interconnection examples of the mat system. 21 Figure 15 shows an example connection diagram for single contactor (single channel), 440F-4000P and 440F-C4000S applications. Circuit status - power on - not present on sensor pad - reset button operated (if in manual reset mode) - machine start circuit enabled.
