{"id":7652,"date":"2025-08-27T07:22:35","date_gmt":"2025-08-27T07:22:35","guid":{"rendered":"https:\/\/www.omch.com\/?p=7652"},"modified":"2025-11-14T09:02:49","modified_gmt":"2025-11-14T09:02:49","slug":"the-power-supply-in-a-small-plc-is-often","status":"publish","type":"post","link":"https:\/\/www.omch.com\/vi\/the-power-supply-in-a-small-plc-is-often\/","title":{"rendered":"T\u1ea1i sao ngu\u1ed3n \u0111i\u1ec7n trong m\u1ed9t PLC c\u1ee1 nh\u1ecf th\u01b0\u1eddng l\u00e0 24 V DC?"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-full is-resized\"><img alt=\"\" fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often1.webp\" class=\"wp-image-7659\" style=\"object-fit:cover;width:512px;height:384px\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often1.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often1-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often1-768x576.webp 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110i\u1ec1u g\u00ec x\u00e1c \u0111\u1ecbnh m\u1ed9t PLC c\u1ee1 nh\u1ecf?<\/h2>\n\n\n\n<p>PLC c\u1ee1 nh\u1ecf ho\u1eb7c lo\u1ea1i \u201cbrick\u201d l\u00e0 nh\u1eefng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng h\u00f3a nh\u1ecf g\u1ecdn, ph\u00f9 h\u1ee3p \u0111\u1ec3 v\u1eadn h\u00e0nh c\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec1u khi\u1ec3n c\u01a1 b\u1ea3n. Nh\u1edd thi\u1ebft k\u1ebf \u0111\u01a1n gi\u1ea3n, gi\u00e1 th\u00e0nh th\u1ea5p v\u00e0 s\u1ef1 ti\u1ec7n l\u1ee3i khi l\u1eafp \u0111\u1eb7t \u1edf nh\u1eefng v\u1ecb tr\u00ed c\u00f3 kh\u00f4ng gian h\u1ea1n ch\u1ebf, lo\u1ea1i PLC n\u00e0y r\u1ea5t \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng. C\u00e1c PLC c\u1ee1 nh\u1ecf th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p v\u1edbi c\u1ea5u h\u00ecnh \u0111\u1ea7u v\u00e0o\/\u0111\u1ea7u ra (I\/O) \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh s\u1eb5n v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n t\u00edch h\u1ee3p s\u1eb5n, ch\u1eb3ng h\u1ea1n nh\u01b0 CPU, c\u00e1c \u0111\u1ea7u n\u1ed1i I\/O, v\u00e0 trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, b\u1ed9 ngu\u1ed3n.<\/p>\n\n\n\n<p>C\u00e1c thi\u1ebft b\u1ecb c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf nh\u01b0 v\u1eady th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00e1y \u0111\u00f3ng g\u00f3i, b\u0103ng t\u1ea3i, h\u1ec7 th\u1ed1ng HVAC v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng d\u1ef1a tr\u00ean m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec1u khi\u1ec3n qu\u00e1 tr\u00ecnh quy m\u00f4 nh\u1ecf. C\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y bao g\u1ed3m nh\u1eefng t\u00ecnh hu\u1ed1ng c\u00f3 y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u v\u1ec1 c\u00e1c ph\u00e9p to\u00e1n logic v\u00e0 n\u01a1i c\u00e1c h\u1ea1n ch\u1ebf v\u1ec1 m\u00f4i tr\u01b0\u1eddng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n nh\u1ecf g\u1ecdn v\u00e0 \u0111\u00e1ng tin c\u1eady v\u1edbi kh\u1ea3 n\u0103ng l\u1eafp \u0111\u1eb7t theo ki\u1ec3u \u201cc\u1eafm l\u00e0 ch\u1ea1y\u201d.<\/p>\n\n\n\n<p>C\u00e1c PLC c\u1ee1 nh\u1ecf c\u00f3 m\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt l\u00e0 t\u00ednh n\u0103ng \u201ct\u1ea5t c\u1ea3 trong m\u1ed9t\u201d. S\u1ef1 t\u00edch h\u1ee3p n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap vi\u1ec7c k\u1ebft n\u1ed1i tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n m\u00e0 c\u00f2n ti\u1ebft ki\u1ec7m th\u1eddi gian \u0111i d\u00e2y c\u0169ng nh\u01b0 kh\u00f4ng gian tr\u00ean b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u2013 m\u1ed9t y\u1ebfu t\u1ed1 \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb g\u1ed1c (OEM) v\u00e0 nh\u00e0 ch\u1ebf t\u1ea1o m\u00e1y m\u00f3c, nh\u1eefng ng\u01b0\u1eddi mong mu\u1ed1n t\u1ed1i \u0111a h\u00f3a hi\u1ec7u qu\u1ea3 c\u1ee7a quy tr\u00ecnh s\u1ea3n xu\u1ea5t. K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn h\u01a1n kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ee9c n\u0103ng. Ngay c\u1ea3 c\u00e1c PLC c\u1ee1 nh\u1ecf v\u1eabn \u0111\u01b0\u1ee3c trang b\u1ecb c\u00e1c t\u00ednh n\u0103ng ti\u00ean ti\u1ebfn nh\u01b0 \u0111i\u1ec1u khi\u1ec3n PID, c\u1ed5ng giao ti\u1ebfp (RS-232\/RS-485, Ethernet) v\u00e0 th\u1eadm ch\u00ed l\u00e0 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i m\u1ea1ng h\u1ea1n ch\u1ebf.<\/p>\n\n\n\n<p>Tr\u01b0\u1edbc khi \u0111i s\u00e2u v\u00e0o ch\u1ee7 \u0111\u1ec1 v\u1ec1 ngu\u1ed3n \u0111i\u1ec7n, c\u1ea7n ph\u1ea3i hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c PLC c\u1ee1 nh\u1ecf. Do d\u00f2ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 tri\u1ec3n khai trong m\u00f4i tr\u01b0\u1eddng c\u00f3 ngu\u1ed3n \u0111i\u1ec7n h\u1ea1n ch\u1ebf, n\u00ean ngu\u1ed3n \u0111i\u1ec7n\/h\u00ecnh th\u1ee9c c\u1ea5p ngu\u1ed3n, \u0111i\u1ec7n \u00e1p v\u00e0 kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p tr\u1edf th\u00e0nh nh\u1eefng y\u1ebfu t\u1ed1 then ch\u1ed1t. H\u1ea7u h\u1ebft c\u00e1c PLC c\u1ee1 nh\u1ecf \u0111\u1ec1u c\u00f3 b\u1ed9 ngu\u1ed3n b\u00ean trong tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n 24V DC, v\u00e0 n\u1ed9i dung th\u1ea3o lu\u1eadn v\u1ec1 v\u1ea5n \u0111\u1ec1 n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong ph\u1ea7n ti\u1ebfp theo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao \u0111i\u1ec7n \u00e1p 24V DC l\u1ea1i tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n<\/h2>\n\n\n\n<p>Kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean m\u00e0 ngu\u1ed3n \u0111i\u1ec7n ti\u00eau chu\u1ea9n cho c\u00e1c PLC c\u1ee1 nh\u1ecf \u0111ang d\u1ea7n chuy\u1ec3n sang 24V DC; \u0111\u00e2y l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh h\u1ed9i t\u1ee5 k\u00e9o d\u00e0i nhi\u1ec1u n\u0103m trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u1ec1 c\u00e1c kh\u00eda c\u1ea1nh an to\u00e0n, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 t\u00ednh th\u1ef1c ti\u1ec5n.<\/p>\n\n\n\n<p><strong>An to\u00e0n<\/strong><strong> Th\u1ee9 nh\u1ea5t:<\/strong> Kh\u00f4ng \u00e1p d\u1ee5ng. \u0110i\u1ec7n \u00e1p 24V DC thu\u1ed9c danh m\u1ee5c \u0110i\u1ec7n \u00e1p c\u1ef1c th\u1ea5p an to\u00e0n (SELV). So v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u (AC) cao h\u01a1n, h\u1ec7 th\u1ed1ng n\u00e0y \u00edt nguy hi\u1ec3m h\u01a1n nhi\u1ec1u v\u1ec1 nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt ho\u1eb7c h\u1ecfa ho\u1ea1n. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi m\u1ecdi m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c m\u00e0 nh\u00e2n vi\u00ean ph\u1ea3i ti\u1ebfp x\u00fac v\u1edbi t\u1ee7 \u0111i\u1ec1u khi\u1ec3n ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00f4ng t\u00e1c b\u1ea3o tr\u00ec.<\/p>\n\n\n\n<p><strong>Ng\u00e0nh c\u00f4ng nghi\u1ec7p <\/strong><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch<\/strong><strong>:<\/strong> C\u00e1c c\u1ea3m bi\u1ebfn, b\u1ed9 truy\u1ec1n \u0111\u1ed9ng, r\u01a1le v\u00e0 b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb ph\u1ee5 tr\u1ee3 n\u00e0o kh\u00e1c theo ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng \u1edf \u0111i\u1ec7n \u00e1p 24V DC. Ghi ch\u00fa: Vi\u1ec7c ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00f9ng m\u1ed9t m\u1ee9c \u0111i\u1ec7n \u00e1p s\u1ebd \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh t\u00edch h\u1ee3p di\u1ec5n ra su\u00f4n s\u1ebb, gi\u1ea3m thi\u1ec3u vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un \u0111\u1ec3 h\u1ea1 ho\u1eb7c n\u00e2ng \u0111i\u1ec7n \u00e1p, \u0111\u1ed3ng th\u1eddi gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<p><strong>Ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 \u0111\u1ed9 tin c\u1eady:<\/strong> \u0110i\u1ec7n \u00e1p 24V DC \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh t\u1ef1 \u0111\u1ed9ng h\u00f3a, v\u00e0 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t linh ki\u1ec7n hi\u1ec7n \u0111\u00e3 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf c\u1ee7a h\u1ecd theo ti\u00eau chu\u1ea9n 24V DC. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh h\u01a1n, vi\u1ec7c mua s\u1eafm \u0111\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n h\u00f3a v\u00e0 hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<p><strong>S\u1ef1 ph\u00e1t tri\u1ec3n l\u1ecbch s\u1eed:<\/strong> Ban \u0111\u1ea7u, c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec1u m\u1ee9c \u0111i\u1ec7n \u00e1p kh\u00e1c nhau \u2013 PLC 5V, PLC 12V, PLC 24V v\u00e0 th\u1eadm ch\u00ed c\u1ea3 PLC 110V! Tuy nhi\u00ean, ti\u00eau chu\u1ea9n 24V DC \u0111\u00e3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p c\u00e2n b\u1eb1ng thu\u1eadn ti\u1ec7n nh\u1ea5t gi\u1eefa kh\u1ea3 n\u0103ng cung c\u1ea5p \u0111i\u1ec7n \u0111\u1ee7 d\u00f9ng v\u00e0 t\u00ednh an to\u00e0n trong v\u1eadn h\u00e0nh. Ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n \u0111\u1ee7 \u0111\u1ec3 v\u1eadn h\u00e0nh c\u00e1c t\u1ea3i logic v\u00e0 I\/O m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn c\u00e1c bi\u1ec7n ph\u00e1p c\u00e1ch ly v\u00e0 b\u1ea3o v\u1ec7 v\u1ed1n l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c n\u1ebfu kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n n\u00e0y.<\/p>\n\n\n\n<p><strong>\u0110\u01a1n gi\u1ea3n h\u00f3a h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i \u0111i\u1ec7n:<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng thanh d\u1eabn \u0111i\u1ec7n \u0111\u1ec3 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n cho c\u00e1c nhu c\u1ea7u ngu\u1ed3n trong t\u1ee7 \u0111i\u1ec1u khi\u1ec3n hi\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1eadp trung h\u00f3a \u1edf m\u1ee9c 24V DC. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m b\u1edbt s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n, b\u1edfi v\u00ec vi\u1ec7c ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u0111\u1ed3ng nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia s\u1ebb cho nhi\u1ec1u th\u00e0nh ph\u1ea7n \u0111i\u1ec1u khi\u1ec3n \u1edf c\u00f9ng m\u1ed9t m\u1ee9c \u0111i\u1ec7n \u00e1p.<\/p>\n\n\n\n<p>T\u00f3m l\u1ea1i, l\u00fd do \u0111\u1eb1ng sau vi\u1ec7c \u00e1p d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n m\u1ed9t chi\u1ec1u 24V l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n l\u1ecbch s\u1eed c\u1ee7a h\u1ec7 th\u1ed1ng, nh\u1eb1m c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 an to\u00e0n \u2013 t\u1ea5t c\u1ea3 \u0111\u1ec1u l\u00e0 nh\u1eefng \u0111\u1eb7c t\u00ednh thi\u1ebft y\u1ebfu c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p hi\u1ec7n nay.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img alt=\"\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often2.webp\" class=\"wp-image-7660\" style=\"object-fit:cover;width:512px;height:384px\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often2.webp 1024w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often2-300x225.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/the-power-supply-in-a-small-plc-is-often2-768x576.webp 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Ngu\u1ed3n \u0111i\u1ec7n t\u00edch h\u1ee3p: Ti\u1ec7n l\u1ee3i v\u00e0 \u0111\u01a1n gi\u1ea3n<\/h2>\n\n\n\n<p>M\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt kh\u00e1c c\u1ee7a PLC c\u1ee1 nh\u1ecf l\u00e0 b\u1ed9 ngu\u1ed3n \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n tr\u00ean v\u1ecf m\u00e1y. Thi\u1ebft k\u1ebf n\u00e0y c\u00f3 c\u01a1 ch\u1ebf t\u00edch h\u1ee3p s\u1eb5n, v\u1edbi c\u00e1c m\u1ee5c \u0111\u00edch ch\u00ednh l\u00e0 ti\u1ebft ki\u1ec7m kh\u00f4ng gian v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh l\u1eafp \u0111\u1eb7t.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn:<\/strong> V\u1edbi b\u1ed9 ngu\u1ed3n t\u00edch h\u1ee3p s\u1eb5n, ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u1ea7n ph\u1ea3i k\u1ebft n\u1ed1i b\u1ed9 ngu\u1ed3n b\u00ean ngo\u00e0i. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u l\u1ed7i k\u1ebft n\u1ed1i v\u00e0 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t.<\/li>\n\n\n\n<li><strong>Thi\u1ebft k\u1ebf b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n nh\u1ecf g\u1ecdn:<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) c\u1ee1 nh\u1ecf th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong thi\u1ebft k\u1ebf t\u1ee7 \u0111i\u1ec1u khi\u1ec3n ti\u1ebft ki\u1ec7m kh\u00f4ng gian. M\u1ed9t b\u1ed9 ngu\u1ed3n t\u00edch h\u1ee3p s\u1ebd gi\u00fap gi\u1ea3m thi\u1ec3u di\u1ec7n t\u00edch chi\u1ebfm d\u1ee5ng c\u1ee7a to\u00e0n b\u1ed9 t\u1ee7 \u0111i\u1ec1u khi\u1ec3n.<\/li>\n\n\n\n<li><strong>Chi ph\u00ed th\u1ea5p h\u01a1n:<\/strong> C\u00e1c linh ki\u1ec7n t\u00edch h\u1ee3p s\u1eb5n trong ng\u00e0nh gi\u00fap gi\u1ea3m b\u1edbt danh m\u1ee5c v\u1eadt t\u01b0, ho\u1ea1t \u0111\u1ed9ng mua s\u1eafm v\u00e0 vi\u1ec7c theo d\u00f5i h\u00e0ng t\u1ed3n kho.<\/li>\n<\/ul>\n\n\n\n<p>M\u1ed9t b\u1ed9 PLC thu nh\u1ecf \u0111i\u1ec3n h\u00ecnh s\u1ebd nh\u1eadn ngu\u1ed3n \u0111i\u1ec7n xoay chi\u1ec1u trong d\u1ea3i \u0111i\u1ec7n \u00e1p r\u1ed9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 100\u2013240 V AC, v\u00e0 chuy\u1ec3n \u0111\u1ed5i n\u1ed9i b\u1ed9 xu\u1ed1ng c\u00f2n 24 V DC th\u00f4ng qua m\u1ea1ch chuy\u1ec3n \u0111\u1ed5i buck \u0111\u1ec3 c\u1ea5p ngu\u1ed3n cho m\u1ea1ch logic v\u00e0 m\u1ea1ch I\/O. Qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u1ed9i b\u1ed9 n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi m\u1ed9t b\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch nh\u1ecf g\u1ecdn \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n trong m\u00e1y.<\/p>\n\n\n\n<p>Thi\u1ebft k\u1ebf n\u00e0y c\u0169ng mang l\u1ea1i l\u1ee3i \u00edch cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t. Nh\u1edd s\u1eed d\u1ee5ng b\u1ed9 ngu\u1ed3n t\u00edch h\u1ee3p, h\u1ecd c\u00f3 th\u1ec3 ti\u00eau chu\u1ea9n h\u00f3a v\u1ecf m\u00e1y PLC b\u1eb1ng c\u00e1ch gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i b\u00ean ngo\u00e0i, \u0111\u1ed3ng th\u1eddi gi\u00fap s\u1ea3n ph\u1ea9m d\u1ec5 s\u1eed d\u1ee5ng ngay khi m\u1edf h\u1ed9p. V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, \u0111i\u1ec1u n\u00e0y c\u0169ng c\u00f3 ngh\u0129a l\u00e0 s\u1ebd \u00edt x\u1ea3y ra s\u1ef1 c\u1ed1 h\u01a1n v\u00e0 vi\u1ec7c ch\u1ea9n \u0111o\u00e1n c\u0169ng tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn v\u1ec1 m\u1eb7t ki\u1ebfn tr\u00fac nh\u1eb1m \u0111\u00e1p \u1ee9ng xu h\u01b0\u1edbng chung h\u01b0\u1edbng t\u1edbi t\u1ef1 \u0111\u1ed9ng h\u00f3a m\u00f4-\u0111un v\u00e0 ph\u00e2n t\u00e1n. C\u00e1c thi\u1ebft b\u1ecb \u201cc\u1eafm l\u00e0 ch\u1ea1y\u201d cho ph\u00e9p h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh, v\u1eadn h\u00e0nh th\u1eed v\u00e0 b\u1ea3o tr\u00ec nhanh h\u01a1n so v\u1edbi tr\u01b0\u1edbc \u0111\u00e2y \u2013 \u0111i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ef1 \u0111\u1ed9ng h\u00f3a n\u01a1i chi ph\u00ed l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1eeb AC sang DC: C\u01a1 ch\u1ebf chuy\u1ec3n \u0111\u1ed5i<\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) c\u1ee1 nh\u1ecf th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng v\u1edbi \u0111i\u1ec7n \u00e1p 24V DC b\u00ean trong, nh\u01b0ng nhi\u1ec1u m\u1eabu m\u00e1y v\u1eabn ch\u1ea5p nh\u1eadn ngu\u1ed3n \u0111i\u1ec7n xoay chi\u1ec1u (AC) l\u00e0m \u0111\u1ea7u v\u00e0o. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 m\u1ed9t h\u1ec7 th\u1ed1ng chuy\u1ec3n \u0111\u1ed5i AC sang DC b\u00ean trong m\u1ea1nh m\u1ebd, th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n trong v\u1ecf m\u00e1y.<\/p>\n\n\n\n<svg width=\"1000\" height=\"400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <!-- \u80cc\u666f -->\n  <rect width=\"1000\" height=\"400\" fill=\"#f8f9fa\" stroke=\"#e9ecef\" stroke-width=\"2\"\/>\n  \n  <!-- \u6807\u9898 -->\n  <text x=\"500\" y=\"30\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"24\" font-weight=\"bold\" fill=\"#2c3e50\">S\u01a1 \u0111\u1ed3 quy tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n AC sang DC<\/text>\n  \n  <!-- AC Input -->\n  <g>\n    <!-- \u8f93\u5165\u6846 -->\n    <rect x=\"50\" y=\"80\" width=\"140\" height=\"80\" fill=\"#e3f2fd\" stroke=\"#1976d2\" stroke-width=\"2\" rx=\"5\"\/>\n    <text x=\"120\" y=\"105\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"12\" font-weight=\"bold\" fill=\"#1976d2\">\u0110\u1ea7u v\u00e0o AC<\/text>\n    <text x=\"120\" y=\"125\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">T\u1eeb 100 \u0111\u1ebfn 240 volt<\/text>\n    <text x=\"120\" y=\"140\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">50 \u0111\u1ebfn 60 hertz<\/text>\n    \n    <!-- \u6b63\u5f26\u6ce2\u7b26\u53f7 -->\n    <path d=\"M 70 150 Q 80 145 90 150 T 110 150 Q 120 155 130 150 T 150 150 Q 160 145 170 150\" \n          stroke=\"#1976d2\" stroke-width=\"2\" fill=\"none\"\/>\n  <\/g>\n  \n  <!-- \u7bad\u59341 -->\n  <path d=\"M 200 120 L 240 120\" stroke=\"#666\" stroke-width=\"2\" marker-end=\"url(#arrowhead)\"\/>\n  \n  <!-- Rectification -->\n  <g>\n    <rect x=\"250\" y=\"80\" width=\"140\" height=\"80\" fill=\"#fff3e0\" stroke=\"#f57c00\" stroke-width=\"2\" rx=\"5\"\/>\n    <text x=\"320\" y=\"105\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"12\" font-weight=\"bold\" fill=\"#f57c00\">Ch\u1ec9nh l\u01b0u (Rectification)<\/text>\n    <text x=\"320\" y=\"125\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">B\u1ed9 ch\u1ec9nh l\u01b0u c\u1ea7u<\/text>\n    <text x=\"320\" y=\"140\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">C\u1ea7u \u0111i\u1ed1t<\/text>\n    \n    <!-- \u4e8c\u6781\u7ba1\u7b26\u53f7 -->\n    <g transform=\"translate(300, 150)\">\n      <polygon points=\"0,0 10,5 0,10\" fill=\"#f57c00\"\/>\n      <line x1=\"10\" y1=\"0\" x2=\"10\" y2=\"10\" stroke=\"#f57c00\" stroke-width=\"2\"\/>\n      <polygon points=\"20,0 30,5 20,10\" fill=\"#f57c00\"\/>\n      <line x1=\"30\" y1=\"0\" x2=\"30\" y2=\"10\" stroke=\"#f57c00\" stroke-width=\"2\"\/>\n    <\/g>\n  <\/g>\n  \n  <!-- \u7bad\u59342 -->\n  <path d=\"M 400 120 L 440 120\" stroke=\"#666\" stroke-width=\"2\" marker-end=\"url(#arrowhead)\"\/>\n  \n  <!-- Filtering -->\n  <g>\n    <rect x=\"450\" y=\"80\" width=\"140\" height=\"80\" fill=\"#f3e5f5\" stroke=\"#7b1fa2\" stroke-width=\"2\" rx=\"5\"\/>\n    <text x=\"520\" y=\"105\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"12\" font-weight=\"bold\" fill=\"#7b1fa2\">L\u1ecdc (Filtering)<\/text>\n    <text x=\"520\" y=\"125\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">L\u1ecdc b\u1eb1ng t\u1ee5 \u0111i\u1ec7n<\/text>\n    <text x=\"520\" y=\"140\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">L\u00e0m m\u1ecbn dao \u0111\u1ed9ng<\/text>\n    \n    <!-- \u7535\u5bb9\u7b26\u53f7 -->\n    <g transform=\"translate(500, 150)\">\n      <line x1=\"0\" y1=\"0\" x2=\"0\" y2=\"12\" stroke=\"#7b1fa2\" stroke-width=\"2\"\/>\n      <line x1=\"5\" y1=\"0\" x2=\"5\" y2=\"12\" stroke=\"#7b1fa2\" stroke-width=\"2\"\/>\n      <line x1=\"15\" y1=\"0\" x2=\"15\" y2=\"12\" stroke=\"#7b1fa2\" stroke-width=\"2\"\/>\n      <line x1=\"20\" y1=\"0\" x2=\"20\" y2=\"12\" stroke=\"#7b1fa2\" stroke-width=\"2\"\/>\n      <line x1=\"25\" y1=\"0\" x2=\"25\" y2=\"12\" stroke=\"#7b1fa2\" stroke-width=\"2\"\/>\n      <line x1=\"30\" y1=\"0\" x2=\"30\" y2=\"12\" stroke=\"#7b1fa2\" stroke-width=\"2\"\/>\n    <\/g>\n  <\/g>\n  \n  <!-- \u7bad\u59343 -->\n  <path d=\"M 600 120 L 640 120\" stroke=\"#666\" stroke-width=\"2\" marker-end=\"url(#arrowhead)\"\/>\n  \n  <!-- Regulation -->\n  <g>\n    <rect x=\"650\" y=\"80\" width=\"140\" height=\"80\" fill=\"#e8f5e8\" stroke=\"#388e3c\" stroke-width=\"2\" rx=\"5\"\/>\n    <text x=\"720\" y=\"105\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"12\" font-weight=\"bold\" fill=\"#388e3c\">\u1ed4n \u00e1p (Regulation)<\/text>\n    <text x=\"720\" y=\"125\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">M\u1ea1ch \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p tuy\u1ebfn t\u00ednh\/b\u1eadt-t\u1eaft<\/text>\n    <text x=\"720\" y=\"140\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">\u0110i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p<\/text>\n    \n    <!-- \u7a33\u538b\u5668\u7b26\u53f7 -->\n    <g transform=\"translate(690, 150)\">\n      <rect x=\"0\" y=\"0\" width=\"20\" height=\"12\" fill=\"none\" stroke=\"#388e3c\" stroke-width=\"1\"\/>\n      <text x=\"10\" y=\"8\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"8\" fill=\"#388e3c\">REG<\/text>\n      <rect x=\"25\" y=\"0\" width=\"20\" height=\"12\" fill=\"none\" stroke=\"#388e3c\" stroke-width=\"1\"\/>\n      <text x=\"35\" y=\"8\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"8\" fill=\"#388e3c\">24V<\/text>\n    <\/g>\n  <\/g>\n  \n  <!-- \u7bad\u59344 -->\n  <path d=\"M 800 120 L 840 120\" stroke=\"#666\" stroke-width=\"2\" marker-end=\"url(#arrowhead)\"\/>\n  \n  <!-- DC Output -->\n  <g>\n    <rect x=\"850\" y=\"80\" width=\"140\" height=\"80\" fill=\"#ffebee\" stroke=\"#d32f2f\" stroke-width=\"2\" rx=\"5\"\/>\n    <text x=\"920\" y=\"105\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"12\" font-weight=\"bold\" fill=\"#d32f2f\">\u0110\u1ea7u ra DC \u1ed5n \u0111\u1ecbnh<\/text>\n    <text x=\"920\" y=\"125\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">24 V DC<\/text>\n    <text x=\"920\" y=\"140\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#333\">\u0110\u1ed9 dao \u0111\u1ed9ng &lt; 1%<\/text>\n    \n    <!-- \u76f4\u6d41\u7b26\u53f7 -->\n    <g transform=\"translate(900, 150)\">\n      <line x1=\"0\" y1=\"6\" x2=\"40\" y2=\"6\" stroke=\"#d32f2f\" stroke-width=\"2\"\/>\n      <text x=\"20\" y=\"4\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"8\" fill=\"#d32f2f\">\u2014<\/text>\n      <text x=\"10\" y=\"16\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"8\" fill=\"#d32f2f\">+<\/text>\n      <text x=\"30\" y=\"16\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"8\" fill=\"#d32f2f\">&#8211;<\/text>\n    <\/g>\n  <\/g>\n  \n  <!-- \u6ce2\u5f62\u793a\u610f\u56fe -->\n  <g transform=\"translate(50, 220)\">\n    <text x=\"0\" y=\"20\" font-family=\"Arial, sans-serif\" font-size=\"14\" font-weight=\"bold\" fill=\"#333\">S\u01a1 \u0111\u1ed3 bi\u1ec3u di\u1ec5n d\u1ea1ng s\u00f3ng \u1edf c\u00e1c giai \u0111o\u1ea1n:<\/text>\n    \n    <!-- AC\u8f93\u5165\u6ce2\u5f62 -->\n    <g transform=\"translate(0, 40)\">\n      <text x=\"0\" y=\"0\" font-family=\"Arial, sans-serif\" font-size=\"10\" fill=\"#1976d2\">\u0110\u1ea7u v\u00e0o AC<\/text>\n      <path d=\"M 0 15 Q 20 5 40 15 T 80 15 Q 100 25 120 15 T 160 15\" stroke=\"#1976d2\" stroke-width=\"1.5\" fill=\"none\"\/>\n    <\/g>\n    \n    <!-- \u6574\u6d41\u540e\u6ce2\u5f62 -->\n    <g transform=\"translate(200, 40)\">\n      <text x=\"0\" y=\"0\" font-family=\"Arial, sans-serif\" font-size=\"10\" fill=\"#f57c00\">Sau khi ch\u1ec9nh l\u01b0u<\/text>\n      <path d=\"M 0 15 Q 20 5 40 15 L 40 15 Q 60 5 80 15 L 80 15 Q 100 5 120 15 L 120 15 Q 140 5 160 15\" stroke=\"#f57c00\" stroke-width=\"1.5\" fill=\"none\"\/>\n    <\/g>\n    \n    <!-- \u6ee4\u6ce2\u540e\u6ce2\u5f62 -->\n    <g transform=\"translate(400, 40)\">\n      <text x=\"0\" y=\"0\" font-family=\"Arial, sans-serif\" font-size=\"10\" fill=\"#7b1fa2\">Sau khi l\u1ecdc<\/text>\n      <path d=\"M 0 8 Q 20 6 40 8 T 80 8 Q 100 10 120 8 T 160 8\" stroke=\"#7b1fa2\" stroke-width=\"1.5\" fill=\"none\"\/>\n    <\/g>\n    \n    <!-- \u7a33\u538b\u540e\u6ce2\u5f62 -->\n    <g transform=\"translate(600, 40)\">\n      <text x=\"0\" y=\"0\" font-family=\"Arial, sans-serif\" font-size=\"10\" fill=\"#d32f2f\">Sau khi \u1ed5n \u0111\u1ecbnh \u0111i\u1ec7n \u00e1p<\/text>\n      <line x1=\"0\" y1=\"10\" x2=\"160\" y2=\"10\" stroke=\"#d32f2f\" stroke-width=\"2\"\/>\n      <text x=\"80\" y=\"6\" text-anchor=\"middle\" font-family=\"Arial, sans-serif\" font-size=\"8\" fill=\"#d32f2f\">24 V DC<\/text>\n    <\/g>\n  <\/g>\n  \n  <!-- \u6280\u672f\u53c2\u6570\u8bf4\u660e -->\n  <g transform=\"translate(50, 320)\">\n    <text x=\"0\" y=\"0\" font-family=\"Arial, sans-serif\" font-size=\"14\" font-weight=\"bold\" fill=\"#333\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt:<\/text>\n    <text x=\"0\" y=\"20\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 \u0110i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o: 100\u2013240 V AC, 50\/60 Hz<\/text>\n    <text x=\"0\" y=\"35\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 \u0110i\u1ec7n \u00e1p \u0111\u1ea7u ra: 24V DC \u00b11%<\/text>\n    <text x=\"0\" y=\"50\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 H\u1ec7 s\u1ed1 dao \u0111\u1ed9ng: &lt; 1%<\/text>\n    \n    <text x=\"300\" y=\"20\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 Hi\u1ec7u su\u1ea5t chuy\u1ec3n \u0111\u1ed5i: 85\u2013901 TP3T<\/text>\n    <text x=\"300\" y=\"35\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 T\u1ef7 l\u1ec7 \u0111i\u1ec1u ch\u1ec9nh t\u1ea3i: &lt; 0,51 TP3T<\/text>\n    <text x=\"300\" y=\"50\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 T\u1ef7 l\u1ec7 \u0111i\u1ec1u ch\u1ec9nh tuy\u1ebfn t\u00ednh: &lt; 0,31 TP3T<\/text>\n    \n    <text x=\"600\" y=\"20\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 Ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7: B\u1ea3o v\u1ec7 qu\u00e1 \u00e1p, qu\u00e1 d\u00f2ng, qu\u00e1 nhi\u1ec7t<\/text>\n    <text x=\"600\" y=\"35\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng: -10\u00b0C ~ +60\u00b0C<\/text>\n    <text x=\"600\" y=\"50\" font-family=\"Arial, sans-serif\" font-size=\"11\" fill=\"#666\">\u2022 Ti\u00eau chu\u1ea9n an to\u00e0n: Ch\u1ee9ng nh\u1eadn CE, UL, FCC<\/text>\n  <\/g>\n  \n  <!-- \u7bad\u5934\u6807\u8bb0\u5b9a\u4e49 -->\n  <defs>\n    <marker id=\"arrowhead\" markerwidth=\"10\" markerheight=\"7\" refx=\"9\" refy=\"3.5\" orient=\"auto\">\n      <polygon points=\"0 0, 10 3.5, 0 7\" fill=\"#666\"\/>\n    <\/marker>\n  <\/defs>\n<\/svg>\n\n\n\n<h3 class=\"wp-block-heading\">Quy tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i:<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u0110\u1ea7u v\u00e0o AC (100\u2013240V):<\/strong> Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi ti\u00eau chu\u1ea9n.<\/li>\n\n\n\n<li><strong>S\u1eeda l\u1ea1i:<\/strong> D\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) kh\u00f4ng \u1ed5n \u0111\u1ecbnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ea1ch ch\u1ec9nh l\u01b0u c\u1ea7u.<\/li>\n\n\n\n<li><strong>L\u1ecdc:<\/strong> T\u1ee5 \u0111i\u1ec7n l\u00e0m m\u1ecbn t\u00edn hi\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ec9nh l\u01b0u \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 g\u1ee3n.<\/li>\n\n\n\n<li><strong>Quy \u0111\u1ecbnh:<\/strong> B\u1ed9 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p \u0111\u1ea3m b\u1ea3o \u0111\u1ea7u ra 24V DC \u1ed5n \u0111\u1ecbnh b\u1ea5t k\u1ec3 s\u1ef1 dao \u0111\u1ed9ng c\u1ee7a t\u1ea3i.<\/li>\n<\/ol>\n\n\n\n<p>C\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng b\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch thay v\u00ec b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh tuy\u1ebfn t\u00ednh. C\u00e1c b\u1ed9 ngu\u1ed3n n\u00e0y c\u00f3 thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn h\u01a1n, hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 t\u1ecfa nhi\u1ec7t \u00edt h\u01a1n \u2014 \u0111\u00e2y l\u00e0 nh\u1eefng y\u00eau c\u1ea7u quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng k\u00edn, kh\u00f4ng c\u00f3 qu\u1ea1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi hai \u0111\u1ea7u v\u00e0o<\/h3>\n\n\n\n<p>C\u00e1c lo\u1ea1i PLC kh\u00e1c h\u1ed7 tr\u1ee3 c\u1ea3 ngu\u1ed3n v\u00e0o AC v\u00e0 DC, do \u0111\u00f3 mang l\u1ea1i s\u1ef1 linh ho\u1ea1t cao h\u01a1n trong c\u00e1c s\u01a1 \u0111\u1ed3 \u0111i\u1ec7n kh\u00e1c nhau. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, c\u00e1c m\u1ea1ch b\u00ean trong \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng ph\u00e1t hi\u1ec7n v\u00e0 \u0111i\u1ec1u ch\u1ec9nh theo lo\u1ea1i ngu\u1ed3n v\u00e0o, nh\u1edd \u0111\u00f3 gi\u00fap qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng ch\u00fang di\u1ec5n ra m\u1ed9t c\u00e1ch tr\u01a1n tru.<\/p>\n\n\n\n<p>Thi\u1ebft k\u1ebf n\u00e0y s\u1ebd t\u1ea1o ra s\u1ef1 chuy\u1ec3n ti\u1ebfp tinh t\u1ebf gi\u1eefa c\u00e1c gi\u1ea3i ph\u00e1p d\u1ef1a tr\u00ean d\u00f2ng xoay chi\u1ec1u (AC) v\u00e0 d\u00f2ng m\u1ed9t chi\u1ec1u (DC) trong qu\u00e1 kh\u1ee9 v\u1edbi c\u00e1c ki\u1ebfn tr\u00fac \u0111i\u1ec1u khi\u1ec3n d\u1ef1a tr\u00ean d\u00f2ng m\u1ed9t chi\u1ec1u (DC) trong t\u01b0\u01a1ng lai. \u0110i\u1ec1u n\u00e0y c\u0169ng c\u00f3 ngh\u0129a l\u00e0 ngay c\u1ea3 t\u1ea1i nh\u1eefng c\u01a1 s\u1edf m\u00e0 ngu\u1ed3n \u0111i\u1ec7n 24V DC th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i, c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i t\u00edch h\u1ee3p c\u00e1c b\u1ed9 ngu\u1ed3n b\u00ean ngo\u00e0i ri\u00eang bi\u1ec7t v\u00e0o h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ef1a ch\u1ecdn c\u00f4ng su\u1ea5t ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) c\u00f3 c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5t \u00e1p, qu\u00e1 t\u1ea3i ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u0111\u1ea1t hi\u1ec7u su\u1ea5t. T\u1ed5ng t\u1ea3i c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n d\u1ef1a tr\u00ean d\u00f2ng \u0111i\u1ec7n ti\u00eau th\u1ee5 c\u1ee7a c\u1ea3 c\u00e1c m\u1ea1ch b\u00ean trong l\u1eabn c\u00e1c thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n b\u1edfi PLC.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh c\u1ea7n xem x\u00e9t:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T\u1ed5ng t\u1ea3i I\/O:<\/strong> T\u1ed5ng s\u1ed1 t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, bao g\u1ed3m r\u01a1le, cu\u1ed9n d\u00e2y \u0111i\u1ec7n t\u1eeb, c\u1ea3m bi\u1ebfn, v.v.<\/li>\n\n\n\n<li><strong>D\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb kh\u1edfi \u0111\u1ed9ng:<\/strong> C\u00e1c thi\u1ebft b\u1ecb nh\u01b0 van \u0111i\u1ec7n t\u1eeb ho\u1eb7c \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 ti\u00eau th\u1ee5 d\u00f2ng \u0111i\u1ec7n cao h\u01a1n trong m\u1ed9t kho\u1ea3nh kh\u1eafc khi kh\u1edfi \u0111\u1ed9ng.<\/li>\n\n\n\n<li><strong>Th\u1eddi gian d\u1ef1 tr\u1eef n\u0103ng l\u01b0\u1ee3ng:<\/strong> Lu\u00f4n d\u1ef1 tr\u00f9 m\u1ed9t kho\u1ea3ng d\u1ef1 ph\u00f2ng \u2014 th\u01b0\u1eddng l\u00e0 20% \u2014 \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai ho\u1eb7c c\u00e1c bi\u1ebfn \u0111\u1ed9ng v\u1ec1 ngu\u1ed3n \u0111i\u1ec7n.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">B\u1ea3ng v\u00ed d\u1ee5 v\u1ec1 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Lo\u1ea1i thi\u1ebft b\u1ecb<\/td><td>S\u1ed1 l\u01b0\u1ee3ng<\/td><td>D\u00f2ng \u0111i\u1ec7n tr\u00ean m\u1ed7i thi\u1ebft b\u1ecb (mA)<\/td><td>T\u1ed5ng d\u00f2ng \u0111i\u1ec7n (mA)<\/td><\/tr><tr><td>C\u1ea3m bi\u1ebfn kho\u1ea3ng c\u00e1ch<\/td><td>4<\/td><td>15<\/td><td>60<\/td><\/tr><tr><td>\u0110\u00e8n b\u00e1o<\/td><td>3<\/td><td>20<\/td><td>60<\/td><\/tr><tr><td>\u0110\u1ea7u ra r\u01a1le<\/td><td>6<\/td><td>40<\/td><td>240<\/td><\/tr><tr><td>M\u1ea1ch logic PLC<\/td><td>1<\/td><td>150<\/td><td>150<\/td><\/tr><tr><td>T\u1ed5ng c\u1ed9ng<\/td><td><\/td><td><\/td><td>510<\/td><\/tr><tr><td>+20% B\u1ed9 \u0111\u1ec7m<\/td><td><\/td><td><\/td><td>s\u00e1u tr\u0103m m\u01b0\u1eddi hai miliampe<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Trong v\u00ed d\u1ee5 n\u00e0y, m\u1ed9t PLC c\u00f3 \u00edt nh\u1ea5t <strong>0,7 A (700 mA)<\/strong> N\u00ean s\u1eed d\u1ee5ng c\u00f4ng su\u1ea5t ngu\u1ed3n \u0111i\u1ec7n 24V DC s\u1eb5n c\u00f3.<\/p>\n\n\n\n<p>M\u1ed9t s\u1ed1 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) c\u1ee1 nh\u1ecf cho ph\u00e9p c\u1ea5p ngu\u1ed3n 24V t\u1eeb b\u00ean ngo\u00e0i ri\u00eang bi\u1ec7t cho c\u00e1c \u0111\u1ea7u n\u1ed1i I\/O, gi\u00fap gi\u1ea3m t\u1ea3i cho b\u1ed9 ngu\u1ed3n b\u00ean trong. Vi\u1ec7c n\u1eafm r\u00f5 ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng s\u1ebd gi\u00fap tr\u00e1nh t\u00ecnh tr\u1ea1ng ch\u1ecdn th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt qu\u00e1 cao ho\u1eb7c g\u00e2y qu\u00e1 t\u1ea3i cho c\u00e1c linh ki\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn ngu\u1ed3n \u0111i\u1ec7n<\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 r\u1ea5t \u0111\u00e1ng tin c\u1eady, c\u00e1c PLC c\u1ee1 nh\u1ecf v\u1eabn c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn ngu\u1ed3n \u0111i\u1ec7n, d\u1eabn \u0111\u1ebfn gi\u00e1n \u0111o\u1ea1n c\u00e1c quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng h\u00f3a. Vi\u1ec7c ph\u00e1t hi\u1ec7n v\u00e0 kh\u1eafc ph\u1ee5c nhanh ch\u00f3ng nh\u1eefng s\u1ef1 c\u1ed1 n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c tri\u1ec7u ch\u1ee9ng th\u01b0\u1eddng g\u1eb7p:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u00e8n LED ngu\u1ed3n kh\u00f4ng s\u00e1ng:<\/strong> Cho bi\u1ebft kh\u00f4ng c\u00f3 \u0111i\u1ec7n \u00e1p ngu\u1ed3n ho\u1eb7c s\u1ef1 c\u1ed1 ngu\u1ed3n \u0111i\u1ec7n b\u00ean trong<\/li>\n\n\n\n<li><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u00f4i ph\u1ee5c c\u00e0i \u0111\u1eb7t g\u1ed1c ngo\u00e0i d\u1ef1 ki\u1ebfn:<\/strong> C\u00f3 th\u1ec3 do \u0111i\u1ec7n \u00e1p ngu\u1ed3n kh\u00f4ng \u1ed5n \u0111\u1ecbnh g\u00e2y ra<\/li>\n\n\n\n<li><strong>L\u1ed7i \u0111\u1ea7u v\u00e0o\/\u0111\u1ea7u ra:<\/strong> C\u00f3 th\u1ec3 x\u1ea3y ra n\u1ebfu \u0111i\u1ec7n \u00e1p gi\u1ea3m khi c\u00f3 t\u1ea3i<\/li>\n\n\n\n<li><strong>L\u1ed7i truy\u1ec1n th\u00f4ng:<\/strong> Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p kh\u00f4ng t\u1ed1t c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c bus n\u1ed9i b\u1ed9<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ec3m tra xem \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o c\u00f3 n\u1eb1m trong ph\u1ea1m vi quy \u0111\u1ecbnh hay kh\u00f4ng (v\u00ed d\u1ee5: 100\u2013240 V AC)<\/li>\n\n\n\n<li>\u0110o \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra DC gi\u1eefa c\u00e1c c\u1ef1c b\u00ean trong, n\u1ebfu c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c<\/li>\n\n\n\n<li>Ki\u1ec3m tra xem c\u00f3 c\u00e1c m\u1ed1i n\u1ed1i \u0111\u1ea7u c\u1eafm b\u1ecb l\u1ecfng ho\u1eb7c d\u1ea5u hi\u1ec7u \u0103n m\u00f2n hay kh\u00f4ng<\/li>\n\n\n\n<li>Ki\u1ec3m tra xem vi\u1ec7c n\u1ed1i \u0111\u1ea5t \u0111\u00e3 ch\u1eafc ch\u1eafn v\u00e0 \u0111\u00fang c\u00e1ch ch\u01b0a<\/li>\n\n\n\n<li>Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh \u2014 t\u00ecnh tr\u1ea1ng qu\u00e1 nhi\u1ec7t c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng t\u1eaft m\u00e1y t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u1eed d\u1ee5ng c\u00e1c k\u00edch c\u1ee1 d\u00e2y d\u1eabn ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o<\/li>\n\n\n\n<li>N\u1ed1i \u0111\u1ea5t cho PLC theo h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/li>\n\n\n\n<li>Tr\u00e1nh b\u1ed1 tr\u00ed c\u00e1c \u0111\u01b0\u1eddng d\u00e2y ngu\u1ed3n v\u00e0 t\u00edn hi\u1ec7u song song v\u1edbi nhau<\/li>\n<\/ul>\n\n\n\n<p>B\u1eb1ng c\u00e1ch duy tr\u00ec ngu\u1ed3n \u0111i\u1ec7n s\u1ea1ch, \u1ed5n \u0111\u1ecbnh v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy tr\u00ecnh l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch, h\u1ea7u h\u1ebft c\u00e1c s\u1ef1 c\u1ed1 v\u1ec1 \u0111i\u1ec7n \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ng\u0103n ch\u1eb7n. Vui l\u00f2ng tham kh\u1ea3o t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 bi\u1ebft chi ti\u1ebft v\u1ec1 quy tr\u00ecnh ch\u1ea9n \u0111o\u00e1n v\u00e0 thay th\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng m\u00f4-\u0111un ngu\u1ed3n ngo\u00e0i<\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 b\u1ed9 ngu\u1ed3n t\u00edch h\u1ee3p l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c PLC c\u1ee1 nh\u1ecf trong c\u00e1c t\u00ecnh hu\u1ed1ng t\u1ea3i th\u1ea5p \u0111\u1ebfn trung b\u00ecnh, nh\u01b0ng m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng nh\u1ea5t \u0111\u1ecbnh \u0111\u00f2i h\u1ecfi t\u00ednh linh ho\u1ea1t ho\u1eb7c c\u00f4ng su\u1ea5t cao h\u01a1n \u2014 v\u00e0 \u0111\u00e2y ch\u00ednh l\u00e0 l\u00fac c\u00e1c m\u00f4-\u0111un ngu\u1ed3n b\u00ean ngo\u00e0i ph\u00e1t huy t\u00e1c d\u1ee5ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un b\u00ean ngo\u00e0i:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cao <\/strong><strong>I\/O<\/strong><strong> T\u1ea3i:<\/strong> C\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 h\u00e0ng ch\u1ee5c \u0111\u1ea7u ra c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u1ee7a ngu\u1ed3n c\u1ea5p n\u1ed9i b\u1ed9.<\/li>\n\n\n\n<li><strong>Y\u00eau c\u1ea7u v\u1ec1 d\u1ef1 ph\u00f2ng:<\/strong> C\u00e1c ho\u1ea1t \u0111\u1ed9ng quan tr\u1ecdng \u0111\u1ed1i v\u1edbi nhi\u1ec7m v\u1ee5 th\u01b0\u1eddng s\u1eed d\u1ee5ng hai ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n ho\u1eb7c b\u1ed9 ngu\u1ed3n c\u00f3 th\u1ec3 thay th\u1ebf khi h\u1ec7 th\u1ed1ng \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/li>\n\n\n\n<li><strong>Ki\u1ebfn tr\u00fac PLC m\u00f4-\u0111un:<\/strong> C\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y th\u01b0\u1eddng t\u00e1ch ri\u00eang c\u00e1c b\u1ed9 ph\u1eadn CPU, I\/O v\u00e0 ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u01afu \u0111i\u1ec3m c\u1ee7a b\u1ed9 ngu\u1ed3n ngo\u00e0i:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng: Ch\u1ecdn c\u00e1c m\u00f4-\u0111un ngu\u1ed3n ph\u00f9 h\u1ee3p ch\u00ednh x\u00e1c v\u1edbi nhu c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng<\/li>\n\n\n\n<li>C\u00e1ch ly: Gi\u1ea3m nhi\u1ec5u v\u00e0 can thi\u1ec7p trong c\u00e1c m\u1ea1ch nh\u1ea1y c\u1ea3m<\/li>\n\n\n\n<li>D\u1ec5 b\u1ea3o tr\u00ec: D\u1ec5 d\u00e0ng thay th\u1ebf ho\u1eb7c n\u00e2ng c\u1ea5p m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn PLC ch\u00ednh<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00e0m t\u0103ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n<\/li>\n\n\n\n<li>C\u1ea7n c\u00f3 s\u1ef1 chu\u1ea9n b\u1ecb v\u00e0 l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n b\u1ed5 sung<\/li>\n\n\n\n<li>L\u00e0m t\u0103ng t\u1ed5ng chi ph\u00ed h\u1ec7 th\u1ed1ng<\/li>\n<\/ul>\n\n\n\n<p>N\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n c\u00f3 t\u00ednh ch\u1ea5t ph\u1ee9c t\u1ea1p, th\u01b0\u1eddng xuy\u00ean ph\u1ea3i m\u1edf r\u1ed9ng quy m\u00f4 ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t, th\u00ec b\u1ea1n n\u00ean xem x\u00e9t c\u00e1c gi\u1ea3i ph\u00e1p PLC m\u00f4-\u0111un c\u00f3 kh\u1ea3 n\u0103ng c\u1ea5p ngu\u1ed3n t\u1eeb b\u00ean ngo\u00e0i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c linh ki\u1ec7n t\u1ef1 \u0111\u1ed9ng h\u00f3a \u0111\u00e1ng tin c\u1eady t\u1eeb OMCH<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img alt=\"\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/D-30-1.webp\" class=\"wp-image-7574\" style=\"object-fit:cover;width:512px;height:512px\" srcset=\"https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/D-30-1.webp 600w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/D-30-1-300x300.webp 300w, https:\/\/www.omch.com\/wp-content\/uploads\/2025\/08\/D-30-1-150x150.webp 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<p>V\u1edbi h\u01a1n 30 n\u0103m kinh nghi\u1ec7m trong ng\u00e0nh, OMCH \u0111\u00e3 tr\u1edf th\u00e0nh nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady c\u00e1c linh ki\u1ec7n t\u1ef1 \u0111\u1ed9ng h\u00f3a k\u1ec3 t\u1eeb n\u0103m 1986. T\u1eeb b\u1ed9 ngu\u1ed3n \u0111\u1ebfn c\u1ea3m bi\u1ebfn v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn kh\u00ed n\u00e9n, d\u00f2ng s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i h\u1ed7 tr\u1ee3 m\u1ed9t lo\u1ea1t c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean PLC.<\/p>\n\n\n\n<p>C\u00e1c linh ki\u1ec7n c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn theo c\u00e1c ti\u00eau chu\u1ea9n ISO 9001, CE, CCC v\u00e0 RoHS, \u0111\u1ea3m b\u1ea3o s\u1ef1 tu\u00e2n th\u1ee7 v\u00e0 \u0111\u1ed9 tin c\u1eady tr\u00ean c\u00e1c th\u1ecb tr\u01b0\u1eddng to\u00e0n c\u1ea7u. \u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n y\u00eau c\u1ea7u thi\u1ebft k\u1ebf t\u00f9y ch\u1ec9nh ho\u1eb7c gi\u1ea3i ph\u00e1p OEM, OMCH cung c\u1ea5p d\u1ecbch v\u1ee5 s\u1ea3n xu\u1ea5t linh ho\u1ea1t \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 t\u00edch h\u1ee3p c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p>D\u00f9 b\u1ea1n \u0111ang t\u00ecm ki\u1ebfm c\u00e1c m\u00f4-\u0111un ngu\u1ed3n nh\u1ecf g\u1ecdn hay l\u00ean k\u1ebf ho\u1ea1ch cho m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, OMCH lu\u00f4n mang \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh v\u00e0 d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<p>T\u00ecm hi\u1ec3u th\u00eam t\u1ea1i <strong><a href=\"https:\/\/www.omch.com\/vi\/\">omch.com<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n m\u1ed9t chi\u1ec1u 24V n\u1eb1m \u1edf s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa an to\u00e0n, ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 t\u00ednh \u0111\u01a1n gi\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng. Vi\u1ec7c s\u1eed d\u1ee5ng b\u1ed9 ngu\u1ed3n t\u00edch h\u1ee3p v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u00f4ng su\u1ea5t hi\u1ec7u qu\u1ea3 lu\u00f4n l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n nh\u1ecf g\u1ecdn n\u00e0y ti\u1ebfp t\u1ee5c l\u00e0 b\u01b0\u1edbc \u0111\u1ec7m h\u01b0\u1edbng t\u1edbi m\u1ed9t h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 ho\u1eb7c nh\u00e0 t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng, ki\u1ebfn th\u1ee9c v\u1ec1 ki\u1ebfn tr\u00fac ngu\u1ed3n c\u1ee7a PLC kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt; \u0111\u00f3 l\u00e0 y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n quy\u1ebft \u0111\u1ecbnh \u0111\u1ebfn t\u00ednh \u1ed5n \u0111\u1ecbnh, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 an to\u00e0n c\u1ee7a h\u1ec7 th\u1ed1ng. V\u00e0 khi m\u1ecdi chi ti\u1ebft \u0111\u1ec1u quan tr\u1ecdng, vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e1ng tin c\u1eady nh\u01b0 OMCH s\u1ebd mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u0110i\u1ec1u g\u00ec \u0111\u1ecbnh ngh\u0129a m\u1ed9t PLC c\u1ee1 nh\u1ecf? C\u00e1c PLC lo\u1ea1i micro ho\u1eb7c d\u1ea1ng kh\u1ed1i l\u00e0 nh\u1eefng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u1ee1 nh\u1ecf, ph\u00f9 h\u1ee3p \u0111\u1ec3 v\u1eadn h\u00e0nh c\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec1u khi\u1ec3n c\u01a1 b\u1ea3n. Nh\u1edd t\u00ednh \u0111\u01a1n gi\u1ea3n, gi\u00e1 th\u00e0nh th\u1ea5p v\u00e0 s\u1ef1 ti\u1ec7n l\u1ee3i khi l\u1eafp \u0111\u1eb7t \u1edf nh\u1eefng v\u1ecb tr\u00ed c\u00f3 kh\u00f4ng gian h\u1ea1n ch\u1ebf, ch\u00fang tr\u1edf n\u00ean r\u1ea5t ph\u1ed5 bi\u1ebfn. C\u00e1c PLC c\u1ee1 nh\u1ecf th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p v\u1edbi c\u1ea5u h\u00ecnh \u0111\u1ea7u v\u00e0o\/\u0111\u1ea7u ra (I\/O) \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh s\u1eb5n v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n t\u00edch h\u1ee3p s\u1eb5n, ch\u1eb3ng h\u1ea1n nh\u01b0 [\u2026]<\/p>","protected":false},"author":4,"featured_media":7659,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Why the Power Supply in a Small PLC Is Often 24V DC","_seopress_titles_desc":"Discover why the power supply in a small PLC is often 24V DC. Our blog explores its benefits and applications in automation systems.","_seopress_robots_index":"","footnotes":""},"categories":[44],"tags":[],"class_list":["post-7652","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-power-supply"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/7652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/comments?post=7652"}],"version-history":[{"count":3,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/7652\/revisions"}],"predecessor-version":[{"id":8786,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/7652\/revisions\/8786"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media\/7659"}],"wp:attachment":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media?parent=7652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/categories?post=7652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/tags?post=7652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}