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1392-B040-RF-MC-A-F1数字交流模块
作为防止触电的措施设计面板外壳的门，使其只能使用钥匙或专用工具打开，因此只有具备足够电气知识的授权人员（如系统设计师或维护人员）才能进入当电缆从金属面板外壳中抽出时，应使用VW-1级或更高等级的阻燃电缆安装外部开关或断路器。由于FA-M3的电源模块没有内置电源开关，因此系统应设计一个外部开关或断路器：-符合EN60947，-可以断开所有载流导体。-标记为FA-M3的电源开关，其ON和OFF位置清楚标记安装在FA-M3附近，操作员可触及范围内，-不会受到附近物体的阻碍，从而阻碍其操作，并且-不会断开FA-M3的接地线。-使用以下外部电源装置连接直流电源模块和I/O模块。-输出电路通过双重或加强绝缘与危险电压绝缘安装了过流保护装置。如果没有，请在外面连接保险丝或断路器。图A3.40显示了FA-M3的绝缘方块图。FA-M3通过基本绝缘和保护接地提供了针对每个危险电压的电击保护参考图A3.40，对包含FA-M3的设备施加适当的测试电压。不要施加过高的测试电压。它引起了麻烦在不处理危险电压的FA-M3模块中，输入输出端子和内部电路之间的绝缘为功能绝缘或非绝缘。就安全标准而言，所有这些绝缘材料都被视为非绝缘材料。因此，在耐压试验中，不要在这些试块之间施加试验电压。
试运行程序
检查控制面板的结构和FA-M3的安装。检查各个模块的安装情况。检查电缆，确保所有电缆的布线和连接正确，符合接线规范。FA-M3是一种精密的电子设备。在检查使用该设备的机器或设施的绝缘时，必须特别注意避免损坏该设备。在打开电源之前，测量电源电压以确保其符合给定的规格。检查外部接线有两种方法：使用万用表一次检查一根电缆，或实际打开电源并查找问题。出于安全原因，后一种方法可能是危险的，因此需要充分注意。通过检查安全电路（如紧急停止电路和保护电路）的工作情况开始测试，这些电路在设备发生故障时启动。用按钮单步穿过机器或设施，测试每个操作模式。在自动模式下运行机器或设施的每个特定模块，或在自动模式中对机器或设施运行独立测试。然后，继续整个系统的全自动操作。测试以确保当机器或设施发生异常时，安全电路正常启动和复位连接和分离连接器和模块连接或断开连接器或模块之前，确保关闭电源。在通电的情况下卸下或更换连接器或模块可能会导致设备永久损坏。修改程序中的注意事项在修改程序后制作程序的备份副本，因为它们可能在测试运行期间被修改。
As a measure to protect against electric shock
design the door of the panel enclosure such that it can only be opened using a key or special tool, and thus only accessible to authorized personnel with adequate electrical knowledge such as system designers or maintenance personnel. - When the cable is drawn out of metallic panel enclosure, use a flame-retardant cable of VW-1 class or more. - Install an external switch or circuit breaker. As the power supply module of the FA-M3 does not have a built-in power supply switch, design the system with an external switch or circuit breaker which: - Is compliant with EN60947, - Can disconnect all current-carrying conductors. - Is labeled as the power supply switch for the FA-M3 with its ON and OFF positions clearly marked. - Is installed near the FA-M3, within reach of an operator, - Is not obstructed by nearby objects such that its operation is hindered, and - does not disconnect the grounding wire from the FA-M3. - Use the following external power supply unit to DC power supply modules and I/O modules. - Output circuit is insulated by double or reinforced insulation from hazardous voltage. - Overcurrent protection device is installed. If not, attach a fuse or a circuit breaker outside.Figure A3.40 shows the insulation block diagram of FA-M3. - FA-M3 provides protection against electric shock from each hazardous voltage by both basic insulation and protective earth. - Apply the appropriate test voltage to the equipment incorporating the FA-M3 by referring to Fig.A3.40. Don't apply the excessive test voltage. It causes the trouble. - In the FA-M3 module which doesn't handle hazardous voltage, the insulations between input-output terminals and internal circuits are functional insulations or non-insulations. In terms of safety standards, all of these insulations are treated as non-insulation. Therefore, in the withstand voltage test, don't apply the test voltage between these blocks.
Test Run Procedure
Check the construction of the control panel and the FA-M3 installation. Check the installation of the individual modules. Check cables to ensure that all cables are properly routed and connected to meet the wiring specifications. The FA-M3 is a delicate electronic device. Special care must be taken to avoid damage to the device when checking the insulation of the machine or facility that uses this device. Before turning on the power, measure the supply voltage to ensure that it conforms to the given specifications. There are two ways to check the external wiring: by using a multimeter to examine the cables one at a time, or by actually turning the power on and looking for problems. The latter method may be hazardous for safety reasons and, therefore, require adequate care. Start the test by checking the operation of safety circuits such as emergency-stop circuits and protective circuits which are actuated when the device gets into trouble. Test each operating mode by stepping through the machine or facility with push buttons. Run each of specific blocks of the machine or facility in the automatic mode or run a standalone test on the machine or facility in the automatic mode. Then, proceed to full automatic operation of the entire system. Test to make sure that safety circuits actuates and reset normally when anomalies occur in the machine or facility Attaching and Detaching Connectors and Modules Be sure to turn off the power before connecting or disconnecting connectors or modules. Removing or replacing connectors or modules with the power on may result in permanent damage to the device. Precautions in Modifying Programs Make a backup copy of programs after modifying them as they may be altered during a test run.
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