PD973BP
PLC內(nèi)部DC 5V電源的負(fù)載能力
UN200 PLC內(nèi)部可以提供的DC 5V電源為CPU模塊和擴展模塊提供工作電源。其中擴展模塊所需的5V工作電源是由CPU模塊通過總線連接器提供的。CPU模塊向其總線擴展接口提供的電流值是有限制的。所以在配擴展模塊時，應(yīng)注意CPU模塊所提供DC 5V電源的負(fù)載能力。電源超載會發(fā)生難以預(yù)料的故障或事故。為確保電源不超載，應(yīng)使各擴展模塊消耗DC 5V電源的電流總和不超過CPU模塊所提供的電流值。否則要重新進行系統(tǒng)配置。系統(tǒng)配置完成后，還要對UN200主機內(nèi)部的DC 5V電源的負(fù)載能力進行校驗。
PLC內(nèi)部DC 24V電源的負(fù)載能力
UN200主機的內(nèi)部電源單元除了提供DC 5V電源外，還提供DC 24V電源。該電源可以作為CPU模塊和擴展模塊用于檢測直流信號輸入點狀態(tài)的DC 24V電源。如果用戶在系統(tǒng)中使用了傳感器的話，也可作為傳感器的電源。一般來講，CPU模塊和擴展模塊的輸入、輸出點所用的DC 24V電源是由用戶外部提供。如果必須使用CPU模塊內(nèi)部的DC 24V電源的話，要對該DC 24V電源的負(fù)載能力進行校驗，使CPU模塊及各擴展模塊所消耗電流的總和不超過該內(nèi)部DC 24V電源所提供的最大電流（400mA ）。
使用時，若需用戶提供外部DC24V電源，應(yīng)注意電源的接法：主機的傳感器電源與用戶提供的外部DC24V電源不能并聯(lián)連接，否則將會導(dǎo)致兩個電源的競爭而影響它們各自的輸出，使得一個電源或兩個電源同時失效，并且使PLC系統(tǒng)產(chǎn)生不正確的操作，由此引發(fā)系統(tǒng)故障。
Fanuc Circuit Board A20B-0005-0450 02A _ A20B0005045002A _ A350-0005-T452/02
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Fanuc Circuit Board A20B-0009-0534 _A20B-0009-0534_Edition 21H_A350-0009-T534/05
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Fanuc Circuit Board PCB_A16B-1010-0040/17E_A16B-1010-004017E_A16B-1010-0040
FANUC CIRCUIT BOARD PCB_A16B-1010-0286/05A_A16B-1010-0286_A16B1010028605A
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FANUC CIRCUIT BOARD W/ COVER A16B-2000-0063/07D
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FANUC MAIN CIRCUIT BOARD A20B-0006-088 A20B-0006-0880
FANUC MAIN CIRCUIT BOARD A20B-1001-0120 TESTED AND 120 DAY WARRANTY
Fanuc Master Circuit Board A20B-0010-0010/02B
Fanuc Master Circuit Board A20B-0010-0100/03B (Inv.25578)
Fanuc Master Circuit Board, A20B-0010-0100 / 02B, Used, WARRANTY
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Fanuc Master Mother Circuit Board, A16B-1010-0330 / 11A, Used, Warranty
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FANUC SPINDLE DRIVE (TOP) CIRCUIT BOARD_A20B-1000-0690 EDITION 07C A20B10000690
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Fanuc, A16B-1500-0010, Circuit Board A16B-1500-0010/07D NEW
