产品内容介绍
1398-DDM-150X扩展数字模块
EMC指令的适用标准表A3.1和A3.2给出了适用于FA-M3的标准，说明符合CE标志的模块满足表中所示的规定值和性能标准。有关符合CE标记的模块的详细信息，请参阅“标准批准和符合FA-M3模块列表”（GS 34M06C11-21E）。从低压指令的安全观点来看，有必要在面板外壳内安装和使用设备。EMC指令一致性测试是在安装在通用面板外壳中的设备上进行的。测试期间使用的面板外壳具有发射短闪烁指数：Pst<1长闪烁指数：P lt<0.65相对稳定电压波动：dc<3.3%最大相对电压波动：dmax<4%电压波动时间：电压波动超过3.3%的时间应小于平均15dB和最大25dB（从30到1000 MHz）的噪声衰减特性500ms。以下标准用于确定是否符合标准：性能标准a：设备继续按照规范运行。性能标准B：性能暂时下降，但在噪声消失后，设备仍按规范运行。性能标准C：存在可通过自恢复功能或操作员干预恢复的临时故障。性能标准D：设备损坏导致的不可恢复故障。
安装注意事项
从低压指令的安全观点来看，该设备应安装在面板外壳内。从EMC的角度来看，使用金属面板外壳可以实现屏蔽效果。EMC指令一致性测试是对安装在通用面板外壳内的设备进行的。测试期间使用的面板外壳具有平均15dB和最大25dB（从30到1000MHz）的辐射噪声衰减特性。安装FA-M3时应注意的事项总结如下。图A3.37以图形方式对此进行了说明使用金属面板外壳和金属板安装设备使用编织线或其他电线将面板外壳和金属板接地，以确保即使在高频下也具有低阻抗将屏蔽电缆用于从面板外壳引出的信号电缆使用螺钉将该设备的基础模块直接固定在金属板上短接本设备电源模块的FG端子和LG端子，并用尽可能短的接线将其连接至金属板在对面板外壳的金属板进行涂层时，遮盖以下零件并露出金属表面，以确保导电性将FA-M3安装到面板外壳的螺栓-与基础模块铝制底盘的接触面-与电源模块FG和LG端子接线的连接屏蔽电缆FG夹具的位置。
Applicable Standards of the EMC Directive
The standards applicable to the FA-M3 are given in tables A3.1 and A3.2 Modules declaring conformity to the CE Mark satisfy the specified values and performance criteria displayed in the tables. For details on modules conforming to the CE Marking, see “List of Standard-Approved and Compliant FA-M3 Modules.” (GS 34M06C11-21E) From the safety viewpoint of the Low Voltage directive, it is necessary to install and use the equipment within a panel enclosure. The EMC directive conformance test is conducted with the equipment installed in a general panel enclosure. The panel enclosure used during the test has an emissiShort flicker index: Pst < 1 Long flicker index: Plt < 0.65 Relative steady voltage fluctuation: dc < 3.3% Maximum relative voltage fluctuation: dmax < 4% Voltage fluctuation time: time where voltage fluctuations exceeds 3.3% should be less than 500msve noise attenuation characteristic of 15dB average and 25dB maximum (from 30 to 1000 MHz).The following criteria are used to determine conformity to a standard: Performance criterion A: The equipment continues to operate according to specification. Performance criterion B: There is a temporary drop in performance but the equipment continues to operate according to specification after the noise disappears. Performance criterion C: There is a temporary failure which can be recovered by the self-recovery function or by operator intervention. Performance criterion D: Non-recoverable failure due to equipment damage.
Installation Considerations
From the safety viewpoint of the Low Voltage directive, this equipment should be installed within a panel enclosure. Using a metallic panel enclosure achieves the shield effect from the EMC viewpoint. The EMC directive conformance test is conducted with the equipment installed within a general panel enclosure. The panel enclosure used during the test has an emissive noise attenuation characteristic of 15dB average and 25dB maximum (from 30 to 1000MHz). The considerations that should be observed when installing the FA-M3 are summarized below. Figure A3.37 illustrates this graphically. - Use a metallic panel enclosure and metal plate to install the equipment. - Ground the panel enclosure and metal plate using braided or other wires to ensure low impedance even at high frequencies. - Use shielded cables for signal cables leading out of the panel enclosure. - Secure the base module of this equipment directly onto the metal plate using screws. - Short the FG terminal and the LG terminal of the power supply module of this equipment and connect it to the metal plate with the shortest wiring possible. - When coating the metal plate of the panel enclosure, mask the following parts and expose the metallic surface to ensure electrical conductance. - the bolts that mounts the FA-M3 to the panel enclosure - The contact surface to the aluminum chassis of the base module - The connection to the wiring to the FG and LG terminals of the power supply module. - The location of the FG clamp for the shielded cable.
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