HONEYWELL DCS卡件CC-GDIL21 DIGITAL INPUT IOTA 51306319-175
HONEYWELL DCS卡件CC-GDIL21 DIGITAL INPUT IOTA 51306319-175
HONEYWELL DCS卡件CC-GDIL21 DIGITAL INPUT IOTA 51306319-175
在變頻器的輸入電流中頻率較低的諧波分量(5次諧波、7次諧波、11次諧波、13次諧波等所)所占的比重是很高的,它們除了可能干擾其他設(shè)備的正常運(yùn)行之外,還因?yàn)樗鼈兿牧舜罅康臒o功功率,使線路的功率因數(shù)大為下降。在輸入電路內(nèi)串入電抗器是抑制較低諧波電流的有效方法。根據(jù)接線位置的不同,主要有以下兩種:
(1) 電抗器 串聯(lián)在電源與變頻器的輸入側(cè)之間。其主要功能有:
a、 通過抑制諧波電流,將功率因數(shù)提高至(0.75-0.85);
b、 削弱輸入電路中的浪涌電流對變頻器的沖擊;
c、 削弱電源電壓不平衡的影響。
(2)直流電抗器 串聯(lián)在整流橋和濾波電容器之間。它的功能比較單一,就是削弱輸入電流中的高次諧波成分。但在提高功率因數(shù)方面比交流電抗器有效,可達(dá)0.95,并具有結(jié)構(gòu)簡單、體積小等優(yōu)點(diǎn)。
6、理布線
對于通過感應(yīng)方式傳播的干擾信號,可以通過合理布線的方式來削弱。具體方法有:
(1)設(shè)備的電源線和信號線應(yīng)量遠(yuǎn)離變頻器的輸入、輸出線;
(2) 其他設(shè)備的電源線和信號線應(yīng)避免和變頻器的輸入、輸出線平行;
6FC5111-0BA47-0AA0 6FC5197-6AA00-0BP2 6FC5203-0AD25-1AA0 6FC5247-0AA06-0AA0
6FC5111-0BA50-0AA0 6FC5197-6AA10-0AP3 6FC5203-0AD26-0AA0 6FC5247-0AA07-0AA0
6FC5111-0BA51-0AA0 6FC5197-6AA10-0BP3 6FC5203-0AD27-0AA0 6FC5247-0AA08-0AA0
6FC5111-0BA52-0AA0 6FC5197-6AA20-0AP1 6FC5203-0AD27-1AA0 6FC5247-0AA11-0AA0
6FC5111-0BA53-0AA0 6FC5197-6AA20-0BP1 6FC5203-0AD28-0BF0 6FC5247-0AA11-0AA1
6FC5111-0BA54-0AA0 6FC5197-6AA30-0AP1 6FC5203-0AD28-0BG0 6FC5247-0AA11-0AA2
6FC5111-0BA55-0AA0 6FC5197-6AA30-0BP1 6FC5203-0AD28-0BH0 6FC5247-0AA11-0AA3
6FC5111-0BA56-0AA0 6FC5197-6AA50-0AP2 6FC5203-0AD28-0BJ0 6FC5247-0AA11-1AA3
6FC5111-0BA57-0AA0 6FC5197-6AA50-0BP2 6FC5203-0AD28-0BK0 6FC5247-0AA15-0AA0
6FC5111-0BA58-0AA0 6FC5197-6AA60-0AP2 6FC5203-0AD28-3CL0 6FC5247-0AA16-0AA0
6FC5111-0BA60-0AA0 6FC5197-6AA60-0BP2 6FC5203-0AD28-4BA0 6FC5247-0AA16-0AA1
6FC5111-0BA60-0AA0 6FC5197-6AA70-0AP1 6FC5203-0AD28-4BB0 6FC5247-0AA17-0AA0
6FC5111-0BA61-0AA0 6FC5197-6AA70-0BP1 6FC5203-0AD28-4BJ0 6FC5247-0AA17-0AA1
6FC5111-0CA01-0AA0 6FC5197-6AA70-0BP2 6FC5203-0AD28-4BK0 6FC5247-0AA18-0AA0
6FC5111-0CA02-0AA0 6FC5197-6AC30-0AP2 6FC5203-0AD28-4BL0 6FC5247-0AA20-0AA0
6FC5111-0CA02-0AA1 6FC5197-6AC30-0BP2 6FC5203-0AD28-4BM0 6FC5247-0AA20-3AA0
6FC5111-0CA02-0AA2 6FC5197-6AC40-0AP2 6FC5203-0AD28-5AA0 6FC5247-0AA20-4AA0
6FC5111-0CA03-0AA0 6FC5197-6AC40-0BP2 6FC5203-0AD28-5AB0 6FC5247-0AA21-0AA0
6FC5111-0CA03-0AA1 6FC5198-3AA50-0TP0 6FC5203-0AD28-5AC0 6FC5247-0AA22-0AA0