產品詳情內容介紹
KEB 19G6CDE-35B0輸出控制器
RAM內存備用電池（所有電源）用于維護CMOS內容的長壽命鋰電池（IC693ACC301）卸下位于CPU底部的蓋板，即可訪問CPU中的RAM內存電源面板。
這個電池安裝在一個塑料夾上，夾在里面掩蔽電池連接到一個小型Berg母連接器，該連接器連接到兩個Berg中的任何一個安裝在電源印刷電路板上的插頭。
此電池可以替換為應用于PLC的電源。計算電源負載Series 90-30 PLC基板中電源上的負載是內部負載的總和以及基板（底板、模塊等），以及連接到隔離+24 VDC電源的外部負載。
使用隔離+24伏電源輸出可選；
但是，此輸出可用于驅動輸入設備數量有限。
電源的最大總功率輸出額定值電源為30瓦；
然而，單個+5VDC輸出可以額定為15或30瓦特，取決于電源設備目錄號。見表12-1，“電源特性比較表”。
硬件組件的負載要求
下表顯示了每個模塊和硬件組件所需的直流負載。
全部的額定值以毫安為單位（除非另有說明）。輸入和輸出模塊額定電流
輸入或輸出打開。表中列出了三個電壓：
+5 VDC為大多數內部電路提供主電源
+24 VDC繼電器電源為繼電器模塊上驅動繼電器的電路供電
+24 VDC隔離提供電源以操作多個輸入電路（輸入模塊僅限），以及連接到電源上的24 VDC輸出端子的任何外部電路電源端子排。
請注意，下表中列出的數字是最高（最壞情況）要求，而不是典型要求。
電源負荷計算示例
以下是確定施加在90-30系列上的總負載的計算示例Series 90-30 PLC硬件的PLC電源。所有當前數字均以毫安。
注意，盡管每個輸出額定功率為15或20瓦（除了+大容量電源的5 VDC輸出額定值為30瓦），總的組合輸出不超過30瓦。
連接到24 VDC的外部電路所需的電源應將電源端子排上的輸出端子添加到計算中。
使用以下步驟確定12 VDC高的輸入電源要求
容量電源：根據下列典型規格確定總輸出功率負載
本章末尾的各個模塊。
將輸出功率乘以1.5以確定輸入功率值。
將輸入功率值除以工作電源電壓，以確定輸入電流要求使用最低輸入電壓確定最大輸入電流考慮啟動浪涌電流要求允許變動幅度（10%至20%）
Power Supply Loading Calculation Examples
Following are examples of calculations for determining the total load placed on a Series 90-30 PLC power supply by the Series 90-30 PLC hardware. All current figures are expressed in milliamps. Note that although each output is rated at 15 or 20 watts (with the exception that the +5 VDC output for the High Capacity power supply is rated at 30 watts), the total combined output can be no more than 30 watts. The power required by external circuits connected to the 24 VDC OUTPUT terminals on the power supply terminal strip should be added to the calculation.
Use the following procedure to determine input power requirements for the 12 VDC High Capacity Power Supply: Determine total output power load from typical specifications listed for individual modules at the end of this chapter. Multiply the output power by 1.5 to determine the input power value. Divide the input power value by the operating source voltage to determine the input current requirements Use the lowest input voltage to determine the maximum input current Allow for start-up surge current requirements Allow margins (10% to 20%) for variations
Backup Battery for RAM Memory
The long-life Lithium battery (IC693ACC301) used to maintain the contents of the CMOS RAM memory in the CPU is accessed by removing the cover plate located at the bottom of the power supply faceplate. This battery is mounted on a plastic clip attached to the inside of this cover. The battery is wired to a small Berg female connector that connects to either of the two Berg male connectors mounted on the Power Supply printed circuit board. This battery can be replaced with power applied to the PLC.Calculating Power Supply Loading The load placed on a power supply in a Series 90-30 PLC baseplate is the sum of the internal and external loads placed on it by all of the hardware components in the baseplate (backplane, modules, etc.), as well as external loads connected to the Isolated + 24 VDC supply. Use of the Isolated +24 Volt power supply output is optional; however, this output can be used to drive a limited number of input devices. The maximum total power output rating of the Power Supplies is 30 watts; however, the individual +5VDC outputs can be rated for either 15 or 30 Watts, depending on the Power Supply catalog number. See Table 12-1, “Power Supply Feature Comparison Table,” for details. Load Requirements for Hardware Components The following table shows the DC load required by each module and hardware component. All ratings are in milliamps (except where noted). Input and Output module current ratings are with all inputs or outputs on. Three voltages are listed in the table: +5 VDC provides primary power to operate most internal circuits +24 VDC Relay Power provides power for circuits that drive the relays on Relay modules +24 VDC Isolated provides power to operate a number of input circuits (input modules only), and any external circuits connected to the 24 VDC Output terminals on the power supply terminal strip. Note that the figures listed in the following table are maximum (worst case) requirements , not typical requirements.
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