產(chǎn)品內(nèi)容介紹
1398-DDM-150X擴(kuò)展數(shù)字模塊
EMC指令的適用標(biāo)準(zhǔn)表A3.1和A3.2給出了適用于FA-M3的標(biāo)準(zhǔn)，說(shuō)明符合CE標(biāo)志的模塊滿(mǎn)足表中所示的規(guī)定值和性能標(biāo)準(zhǔn)。有關(guān)符合CE標(biāo)記的模塊的詳細(xì)信息，請(qǐng)參閱“標(biāo)準(zhǔn)批準(zhǔn)和符合FA-M3模塊列表”（GS 34M06C11-21E）。從低壓指令的安全觀點(diǎn)來(lái)看，有必要在面板外殼內(nèi)安裝和使用設(shè)備。EMC指令一致性測(cè)試是在安裝在通用面板外殼中的設(shè)備上進(jìn)行的。測(cè)試期間使用的面板外殼具有發(fā)射短閃爍指數(shù)：Pst<1長(zhǎng)閃爍指數(shù)：P lt<0.65相對(duì)穩(wěn)定電壓波動(dòng)：dc<3.3%最大相對(duì)電壓波動(dòng)：dmax<4%電壓波動(dòng)時(shí)間：電壓波動(dòng)超過(guò)3.3%的時(shí)間應(yīng)小于平均15dB和最大25dB（從30到1000 MHz）的噪聲衰減特性500ms。以下標(biāo)準(zhǔn)用于確定是否符合標(biāo)準(zhǔn)：性能標(biāo)準(zhǔn)a：設(shè)備繼續(xù)按照規(guī)范運(yùn)行。性能標(biāo)準(zhǔn)B：性能暫時(shí)下降，但在噪聲消失后，設(shè)備仍按規(guī)范運(yùn)行。性能標(biāo)準(zhǔn)C：存在可通過(guò)自恢復(fù)功能或操作員干預(yù)恢復(fù)的臨時(shí)故障。性能標(biāo)準(zhǔn)D：設(shè)備損壞導(dǎo)致的不可恢復(fù)故障。
安裝注意事項(xiàng)
從低壓指令的安全觀點(diǎn)來(lái)看，該設(shè)備應(yīng)安裝在面板外殼內(nèi)。從EMC的角度來(lái)看，使用金屬面板外殼可以實(shí)現(xiàn)屏蔽效果。EMC指令一致性測(cè)試是對(duì)安裝在通用面板外殼內(nèi)的設(shè)備進(jìn)行的。測(cè)試期間使用的面板外殼具有平均15dB和最大25dB（從30到1000MHz）的輻射噪聲衰減特性。安裝FA-M3時(shí)應(yīng)注意的事項(xiàng)總結(jié)如下。圖A3.37以圖形方式對(duì)此進(jìn)行了說(shuō)明使用金屬面板外殼和金屬板安裝設(shè)備使用編織線或其他電線將面板外殼和金屬板接地，以確保即使在高頻下也具有低阻抗將屏蔽電纜用于從面板外殼引出的信號(hào)電纜使用螺釘將該設(shè)備的基礎(chǔ)模塊直接固定在金屬板上短接本設(shè)備電源模塊的FG端子和LG端子，并用盡可能短的接線將其連接至金屬板在對(duì)面板外殼的金屬板進(jìn)行涂層時(shí)，遮蓋以下零件并露出金屬表面，以確保導(dǎo)電性將FA-M3安裝到面板外殼的螺栓-與基礎(chǔ)模塊鋁制底盤(pán)的接觸面-與電源模塊FG和LG端子接線的連接屏蔽電纜FG夾具的位置。
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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