{"id":25250,"date":"2011-01-13T12:08:23","date_gmt":"2011-01-13T05:08:23","guid":{"rendered":"https:\/\/banbientan.com\/?p=25250"},"modified":"2011-01-13T12:08:23","modified_gmt":"2011-01-13T05:08:23","slug":"tim-hieu-ve-ngo-vao-ra-so-analog-cua-plc-mua-ban-sua-chua-bien-tan-tai-ha-noi","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=25250","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 ng\u00f5 v\u00e0o ra s\u1ed1 analog c\u1ee7a PLC. Mua b\u00e1n s\u1eeda ch\u1eefa bi\u1ebfn t\u1ea7n t\u1ea1i h\u00e0 n\u1ed9i"},"content":{"rendered":"\n<h2><a href=\"https:\/\/banbientan.com\/wp-content\/uploads\/2021\/01\/bot-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-25251\" src=\"https:\/\/banbientan.com\/wp-content\/uploads\/2021\/01\/bot-2.jpg\" alt=\"\" width=\"865\" height=\"393\" \/><\/a>T\u00ecm hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 \u0111\u1ea5u d\u00e2y ng\u00f5 v\u00e0o s\u1ed1 c\u1ee7a PLC<\/h2>\n<p>\u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i\u00a0<a href=\"https:\/\/banbientan.com\" target=\"_blank\" rel=\"noopener noreferrer\">plc<\/a>\u00a0hi\u1ec7n nay th\u01b0\u1eddng c\u00f3 2 d\u1ea1ng \u0111\u1ea5u d\u00e2y ng\u00f5 v\u00e0o s\u1ed1 l\u00e0 d\u1ea1ng sink ho\u1eb7c source. S\u1ef1 kh\u00e1c nhau c\u01a1 b\u1ea3n c\u1ee7a 2 ki\u1ec3u n\u00e0y l\u00e0 ch\u00e2n chung \u0111\u01b0\u1ee3c n\u1ed1i l\u00ean ngu\u1ed3n 0V hay ngu\u1ed3n +24v, t\u1eeb \u0111\u00f3 d\u1eabn t\u1edbi t\u00edn hi\u1ec7u k\u00edch ng\u00f5 v\u00e0o l\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n<p>V\u00ed d\u1ee5 khi b\u1ea1n \u0111\u1ea5u d\u00e2y ki\u1ec3u sink th\u00ec ch\u00e2n chung \u0111\u01b0\u1ee3c n\u1ed1i l\u00ean ngu\u1ed3n +24v, 2 ch\u00e2n c\u00f2n l\u1ea1i c\u1ee7a c\u00f4ng t\u1eafc 1 ch\u00e2n xu\u1ed1ng 0V v\u00e0 ch\u00e2n c\u00f2n l\u1ea1i l\u00e0 v\u00e0o ng\u00f5 v\u00e0o plc, khi c\u00f4ng t\u1eafc h\u1edf th\u00ec ng\u00f5 v\u00e0o l\u00e0 0, khi \u0111\u00f3ng l\u1ea1i th\u00ec ng\u00f5 v\u00e0o l\u00e0 1.<\/p>\n<p>Khi s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 lo\u1ea1i c\u1ea3m bi\u1ebfn ng\u00f5 ra c\u1ef1c thu h\u1edf th\u00ec c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng ngu\u1ed3n 24V tr\u00ean plc \u0111\u1ec3 \u0111\u1ea5u d\u00e2y t\u00edn hi\u1ec7u cho c\u1ea3m bi\u1ebfn, s\u01a1 \u0111\u1ed3 \u0111\u1ea5u d\u00e2y c\u1ee7a lo\u1ea1i n\u00e0y b\u1ea1n ph\u1ea3i xem x\u00e9t d\u1ef1a tr\u00ean s\u01a1 \u0111\u1ea7u c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea5u d\u00e2y ch\u00ednh x\u00e1c c\u00f3 t\u00edn hi\u1ec7u ng\u00f5 v\u00e0o th\u00ec b\u1eaft bu\u1ed9c c\u00e1c b\u1ea1n ph\u1ea3i tham kh\u1ea3o trong catalog ho\u1eb7c manual c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c c\u00e1ch \u0111\u1ea5u d\u00e2y. \u0110a s\u1ed1 c\u00e1c lo\u1ea1i plc hi\u1ec7n nay \u0111\u1ec1u s\u1eed d\u1ee5ng ngu\u1ed3n 24V \u0111\u1ec3 s\u1eed d\u1ee5ng cho vi\u1ec7c \u0111\u1ea5u ng\u00f5 v\u00e0o n\u00ean b\u1ea1n tr\u00e1nh s\u1eed d\u1ee5ng ngu\u1ed3n AC 220v \u0111\u1ec3 c\u1ea5p c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ecfng cho plc ngay l\u1eadp t\u1ee9c.<\/p>\n<h2>T\u00ecm hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch \u0111\u1ea5u d\u00e2y ng\u00f5 ra s\u1ed1 c\u1ee7a PLC<\/h2>\n<p>Ng\u00f5 ra c\u1ee7a PLC hi\u1ec7n nay c\u00f3 2 d\u1ea1ng l\u00e0 ch\u1ee7 y\u1ebfu:<\/p>\n<ul>\n<li>M\u1ed9t l\u00e0 ng\u00f5 ra d\u1ea1ng relay, ng\u00f5 ra d\u1ea1ng n\u00e0y m\u00ecnh c\u00f3 th\u1ec3 t\u00f9y ch\u1ecdn \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n c\u1ea3 thi\u1ebft b\u1ecb 24v v\u00e0 220v v\u1edbi d\u00f2ng ng\u00f5 ra thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n kho\u1ea3ng v\u00e0i ampe tr\u1edf l\u1ea1i.<\/li>\n<li>D\u1ea1ng ng\u00f5 ra th\u1ee9 hai l\u00e0 d\u1ea1ng ng\u00f5 ra transitor, d\u1ea1ng n\u00e0y khi \u0111i\u1ec1u khi\u1ec3n thi\u1ebft b\u1ecb c\u00e1c b\u1ea1n c\u0169ng ph\u1ea3i xem s\u01a1 \u0111\u1ed3 c\u1ee7a t\u1eebng lo\u1ea1i plc \u0111\u1ec3 \u0111\u1ea5u d\u00e2y theo ki\u1ec3u c\u1ef1c thu h\u1edf.<\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi d\u1ea1ng ng\u00f5 ra transitor s\u1ebd c\u00f3 t\u1ea7n s\u1ed1 \u0111\u00f3ng ng\u1eaft cao h\u01a1n so v\u1edbi ng\u00f5 ra relay( g\u00f5 ra relay c\u00f3 t\u1ea7n s\u1ed1 \u0111\u00f3ng c\u1eaft kho\u1ea3ng d\u01b0\u1edbi 1Hz l\u00e0 t\u1ed1i \u0111a), v\u1edbi m\u1ed9t s\u1ed1 ng\u00f5 ra c\u1ea7n t\u1ea7n s\u1ed1 \u0111\u00f3ng c\u1eaft cao nh\u01b0 \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n servo th\u00ec plc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p ng\u00f5 ra transistor c\u00f3 t\u1ea7n s\u1ed1 \u0111\u00f3ng ng\u1eaft t\u1eeb 100-200Hz.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea5u d\u00e2y ng\u00f5 ra s\u1ed1 plc d\u1ea1ng relay hay transistor th\u00ec c\u00e1c b\u1ea1n c\u0169ng c\u1ea7n ph\u1ea3im xem chi ti\u1ebft s\u01a1 \u0111\u1ed3 b\u00ean trong c\u1ee7a plc \u0111\u1ec3 \u0111\u1ea5u d\u00e2y cho \u0111\u00fang. \u0110\u1eb7t bi\u1ebft \u0111\u1ed1i v\u00f3i lo\u1ea1i ng\u00f5 ra transistor c\u1ef1c thu h\u1edf n\u1ebfu kh\u00f4ng g\u1eafn t\u1ea3i \u1edf ng\u00f5 ra c\u00f3 th\u1ec3 l\u00e0m h\u01b0 h\u1ecfng ch\u00e2n n\u00e0y.<\/p>\n<h2>Ng\u00f5 v\u00e0o ra analog c\u1ee7a plc l\u00e0 g\u00ec ?<\/h2>\n<p>Trong qu\u00e1 tr\u00ecnh l\u1eadp tr\u00ecnh cho plc ta th\u01b0\u1eddng ph\u1ea3i thu th\u1eadp d\u1eef li\u1ec7u analog t\u1eeb nh\u1eefng gi\u00e1 tr\u1ecb d\u00f2ng \u0111i\u1ec7n hay \u0111i\u1ec7n \u00e1p do c\u1ea3m bi\u1ebfn ho\u1eb7c thi\u1ebft b\u1ecb kh\u00e1c \u0111\u01b0a v\u1eady. Nh\u1eefng gi\u00e1 tr\u1ecb n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 analog. Ch\u00ednh v\u00ec v\u1eady m\u00e0 tr\u00ean plc hi\u1ec7n nay h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec1u t\u00edch h\u1ee3p ng\u00f5 v\u00e0o ra analog cho plc.<\/p>\n<p>Gi\u00e1 tr\u1ecb analog \u0111\u01b0\u1ee3c hi\u1ec3u tr\u00ean plc th\u01b0\u1eddng l\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a \u00f4 nh\u1edb t\u00f9y theo \u0111\u1ed9 ph\u00e2n gi\u1ea3i c\u1ee7a ng\u00f5 v\u00e0o ra analog. V\u00ed d\u1ee5 nh\u01b0 ng\u00f5 v\u00e0o analog 0-10V c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i l\u00e0 10 bit th\u00ec gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o 0V \u1ee9ng v\u1edbi \u00f4 nh\u1edb gi\u00e1 tr\u1ecb l\u00e0 0, gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o 10V \u1ee9ng v\u1edbi gi\u00e1 tr\u1ecb 2^10-2=1023.<\/p>\n<p>Hi\u1ec7n nay tr\u00ean plc t\u00edch h\u1ee3p 2 d\u1ea1ng ng\u00f5 v\u00e0o ra analog ph\u1ed5 bi\u1ebfn nh\u01b0 sau:<\/p>\n<ul>\n<li>0-10V: \u0111\u1ecdc \u0111i\u1ec7n \u00e1p analog t\u1eeb 0-10V.<\/li>\n<li>4-20mA: \u0111\u1ecdc d\u00f2ng \u0111i\u1ec7n 4-20 ma.<\/li>\n<\/ul>\n<p>D\u1ea1ng \u0111\u1ecdc t\u00edn hi\u1ec7u 4-20mA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1ef1c t\u1ebf nhi\u1ec1u h\u01a1n nh\u1edd kh\u1ea3 n\u0103ng k\u00e9o d\u00e2y \u0111i xa m\u00e0 t\u00edn hi\u1ec7u v\u1eabn kh\u00f4ng b\u1ecb suy y\u1ebfu, c\u00f2n d\u1ea1ng 0-10V n\u1ebfu k\u00e9o d\u00e2y qu\u00e1 d\u00e0i th\u00ec s\u1ebd b\u1ecb suy y\u1ebfu do suy hao tr\u00ean d\u00e2y d\u1eabn.<\/p>\n<h2>L\u01b0u \u00fd khi s\u1eed d\u1ee5ng ng\u00f5 v\u00e0o ra analog tr\u00ean plc<\/h2>\n<ul>\n<li>Ng\u00f5 v\u00e0o ra analog tr\u00ean plc th\u01b0\u1eddng c\u00f3 2 d\u00e2y bao g\u1ed3m GND v\u00e0 d\u00e2y nh\u1eadn t\u00edn hi\u1ec7u. B\u1ea1n c\u1ea7n ph\u1ea3i tham kh\u1ea3o th\u1eadt k\u1ef9 t\u00e0i li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u1ea5u cho \u0111\u00fang ch\u00e2n n\u00e0y. Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n \u00e1p ho\u1eb7c ampe qu\u00e1 l\u1edbn v\u00e0o 2 ch\u00e2n n\u00e0y v\u00ed d\u1ee5 nh\u01b0 c\u1ea5p ngu\u1ed3n 24 ho\u1eb7c 220v v\u00e0o tr\u1ef1c ti\u1ebfp 2 ch\u00e2n n\u00e0y s\u1ebd g\u00e2y h\u01b0 h\u1ecfng cho \u0111\u1ea7u nh\u1eadn xu\u1ea5t analog v\u00e0 g\u00e2y h\u01b0 h\u1ecfng cho c\u1ea3 plc.<\/li>\n<li>Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p t\u00edn hi\u1ec7u s\u1ebd b\u1ecb tr\u00f4i zero t\u1ee9c l\u00e0 gi\u00e1 tr\u1ecb 0V m\u00e0 trong khi plc \u0111\u1ecdc \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb kh\u00e1c 0 th\u00ec c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 c\u00e0i \u0111\u1eb7t ph\u1ea7n offset tr\u00ean plc \u0111\u1ec3 gi\u00e1 tr\u1ecb c\u00f3 th\u1ec3 v\u1ec1 \u0111\u00fang theo y\u00eau c\u1ea7u.<\/li>\n<\/ul>\n<h2>M\u1ed9t s\u1ed1 s\u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn s\u1eed d\u1ee5ng ng\u00f5 v\u00e0o ra analog tr\u00ean plc<\/h2>\n<ul>\n<li>D\u1ec5 th\u1ea5y nh\u1ea5t trong vi\u1ec7c s\u1eed d\u1ee5ng ng\u00f5 v\u00e0o ra analog tr\u00ean plc \u0111\u00f3 ch\u00ednh l\u00e0 d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n v\u00e0 gi\u00e1m s\u00e1t t\u1ed1c \u0111\u1ed9 gi\u1eefa plc v\u00e0 bi\u1ebfn t\u1ea7n. Trong \u1ee9ng d\u1ee5ng n\u00e0y plc s\u1ebd xu\u1ea5t ng\u00f5 ra analog l\u00e0m t\u1ea7n s\u1ed1 tham chi\u1ebfu cho bi\u1ebfn t\u1ea7n, sau \u0111\u00f3 bi\u1ebfn t\u1ea7n xu\u1ea5t ng\u01b0\u1ee3c l\u1ea1i analog cho plc \u0111\u1ec3 plc gi\u00e1m s\u00e1t d\u00f2ng \u0111i\u1ec7n tr\u00ean bi\u1ebfn t\u1ea7n \u0111\u1ec3 c\u00f3 th\u1ec3 theo d\u00f5i v\u00e0 chu\u1ea9n \u0111o\u00e1n qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/li>\n<li>S\u1eed d\u1ee5ng ng\u00f5 v\u00e0o analog ta c\u0169ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng k\u1ebft n\u1ed1i \u0111\u1ec3 \u0111\u1ecdc gi\u00e1 tr\u1ecb t\u1eeb m\u1ed9t s\u1ed1 lo\u1ea1i c\u1ea3m bi\u1ebfn analog nh\u01b0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m, laser, h\u1ed3ng ngo\u1ea1i \u0111o kho\u1ea3ng c\u00e1ch, k\u1ebft n\u1ed1i v\u1edbi \u0111\u1ea7u \u0111i\u1ec1u khi\u1ec3n nhi\u1ec7t \u0111\u1ed9, b\u1ed9 chuy\u1ec3n \u0111\u1ed1i \u0111\u1ea7u c\u00e2n loadcell c\u00f3 ng\u00f5 ra analog.<\/li>\n<\/ul>\n<p style=\"text-align: center; background: white; margin: 0in 0in 15.6pt 0in;\" align=\"center\"><strong><span style=\"font-family: 'Arial',sans-serif; color: blue; background: white;\">C\u00f4ng ty TNHH \u0111i\u1ec7n v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a H\u01b0ng Long (Hung Long AE Co.,ltd)<\/span><\/strong><\/p>\n<p style=\"text-align: center; background: white; box-sizing: border-box; font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px; margin: 0in 0in 15.6pt 0in;\" align=\"center\"><b style=\"box-sizing: border-box;\"><span style=\"font-family: 'Arial',sans-serif; color: #666666;\">S\u1ed1 66, Ng\u00f5 282 Kim Giang, Ph\u01b0\u1eddng \u0110\u1ea1i Kim, Qu\u1eadn Ho\u00e0ng Mai, H\u00e0 N\u1ed9i<\/span><\/b><\/p>\n<p style=\"text-align: center; background: white; margin: 0in 0in 15.6pt 0in;\" align=\"center\"><b><span style=\"font-family: 'Arial',sans-serif; color: #666666;\">Mua b\u00e1n, l\u1eafp \u0111\u1eb7t, c\u00e0i \u0111\u1eb7t, s\u1eeda ch\u1eeda Bi\u1ebfn t\u1ea7n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb t\u1ef1 \u0111\u1ed9ng h\u00f3a<\/span><\/b><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":25251,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[25,48,40,36],"class_list":["post-25250","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cau-hoi-ve-bien-tan","tag-bien-tan-cu-gia-re","tag-bien-tan-nhat-ban","tag-bien-tan-trung-quoc-gia-re","tag-sua-chua-bien-tan-2"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/25250","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25250"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/25250\/revisions"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}