{"id":473,"date":"2026-10-06T08:26:02","date_gmt":"2026-10-06T08:26:02","guid":{"rendered":"https:\/\/otomasiplcbandung.com\/?p=473"},"modified":"2026-10-11T21:02:27","modified_gmt":"2026-10-11T21:02:27","slug":"power-supply","status":"publish","type":"post","link":"https:\/\/otomasiplcbandung.com\/?p=473","title":{"rendered":"POWER SUPPLY"},"content":{"rendered":"\n

power supply PLC<\/strong> mulai dari fungsi, jenis tegangan, sampai cara membaca wiring diagram power supply PLC<\/strong> dengan bahasa yang mudah dipahami siswa SMK.<\/p>\n\n\n\n

Power Supply pada PLC<\/h2>\n\n\n\n

Power supply adalah bagian yang menyediakan sumber tegangan listrik yang dibutuhkan oleh PLC agar CPU, modul input\/output, dan rangkaian elektronik di dalam PLC dapat bekerja.<\/p>\n\n\n\n

Pada praktiknya, kita perlu membedakan tegangan yang masuk ke PLC<\/strong> dengan tegangan yang digunakan oleh sensor dan aktuator<\/strong>. Tidak semua PLC memiliki konfigurasi power supply yang sama, sehingga terminal harus selalu mengikuti diagram dari tipe PLC yang digunakan.<\/p>\n\n\n\n

1. Contoh alur power supply PLC<\/h3>\n\n\n\n

Untuk PLC yang menggunakan sumber AC 220 V<\/strong> dan memiliki power supply internal, gambaran sederhananya:<\/p>\n\n\n\n

       SUMBER AC 220 V\n        L        N\n        \u2502        \u2502\n      [MCB \/ Pengaman]\n        \u2502        \u2502\n      [Fuse]    [Fuse]\n        \u2502        \u2502\n        \u2514\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\n            \u2502\n        \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n        \u2502   PLC   \u2502\n        \u2502 POWER   \u2502\n        \u2502 SUPPLY  \u2502\n        \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n            \u2502\n            \u2502\n       CPU PLC bekerja\n<\/code><\/pre>\n\n\n\n
Secara sederhana:<\/p>\n\n\n\n
AC 220 V \u2192 Pengaman \u2192 Terminal power PLC \u2192 Power supply internal \u2192 CPU dan rangkaian PLC<\/strong><\/p>\n\n\n\n
Namun, jangan langsung menerapkan gambar umum tersebut sebagai wiring nyata<\/strong>. Posisi terminal L, N, PE, DC+, DC\u2212, dan terminal lainnya berbeda-beda menurut merek dan tipe PLC.<\/p>\n\n\n\n
2. Terminal yang biasanya ditemukan<\/h2>\n\n\n\n
Pada sebuah panel PLC, kita dapat menemukan beberapa terminal yang umum, misalnya:<\/p>\n\n\n\n
    \n
  • L<\/strong> = Line\/Phase AC<\/li>\n\n\n\n
  • N<\/strong> = Neutral<\/li>\n\n\n\n
  • PE atau \u23da<\/strong> = Protective Earth\/grounding pengaman<\/li>\n\n\n\n
  • +24 V<\/strong> = tegangan DC positif<\/li>\n\n\n\n
  • 0 V \/ M<\/strong> = DC negatif atau common<\/li>\n\n\n\n
  • DC+ \/ DC\u2212<\/strong> = terminal suplai DC<\/li>\n<\/ul>\n\n\n\n
    Contohnya, jika PLC menggunakan 24 VDC sebagai sumbernya<\/strong>:<\/p>\n\n\n\n
           POWER SUPPLY 24 VDC\n       \n       L \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n                         \u2502\n       N \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524 AC INPUT\n                         \u2502\n       PE \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524 Ground\n                         \u2502\n                    \u250c\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2510\n                    \u2502  24 VDC \u2502\n                    \u2502 POWER   \u2502\n                    \u2502 SUPPLY  \u2502\n                    \u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\n                         \u2502\n              \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n              \u2502                     \u2502\n             +24V                   0V\n              \u2502                     \u2502\n              \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba PLC \u25c4\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n
    Dalam konfigurasi ini, power supply 24 VDC eksternal<\/strong> mengubah sumber AC menjadi tegangan DC yang digunakan PLC.<\/p>\n\n\n\n
    3. Apa fungsi L, N, dan PE?<\/h2>\n\n\n\n
    L \u2014 Line\/Phase<\/h3>\n\n\n\n
    L merupakan penghantar fasa pada sistem AC. Pada instalasi AC 220 V, penghantar ini merupakan salah satu penghantar yang membawa tegangan terhadap neutral.<\/p>\n\n\n\n
    N \u2014 Neutral<\/h3>\n\n\n\n
    N merupakan penghantar netral yang menjadi pasangan rangkaian AC dengan L.<\/p>\n\n\n\n
    PE \u2014 Protective Earth<\/h3>\n\n\n\n
    PE adalah penghantar pembumian pengaman. Fungsinya berkaitan dengan keselamatan manusia dan perlindungan peralatan<\/strong>, terutama ketika terjadi gangguan isolasi.<\/p>\n\n\n\n
    PE bukan sekadar pengganti N<\/strong> dan tidak boleh diperlakukan sebagai penghantar netral.<\/p>\n\n\n\n
    4. Mengapa PLC membutuhkan power supply?<\/h2>\n\n\n\n
    PLC membutuhkan tegangan listrik yang sesuai agar komponen elektronik di dalamnya dapat bekerja.<\/p>\n\n\n\n
    Power supply yang baik membantu menyediakan tegangan yang stabil untuk sistem kontrol. Dalam sebuah panel industri, power supply juga biasanya harus dipilih sesuai dengan:<\/p>\n\n\n\n
      \n
    • Tegangan sumber.<\/li>\n\n\n\n
    • Tegangan kerja PLC.<\/li>\n\n\n\n
    • Arus yang dibutuhkan.<\/li>\n\n\n\n
    • Jumlah sensor dan perangkat DC.<\/li>\n\n\n\n
    • Kebutuhan modul input\/output.<\/li>\n\n\n\n
    • Kondisi lingkungan industri.<\/li>\n<\/ul>\n\n\n\n
      Misalnya, sebuah sistem menggunakan 24 VDC<\/strong> untuk PLC dan sensor. Power supply harus memiliki kapasitas yang cukup untuk seluruh beban yang terhubung.<\/p>\n\n\n\n
      5. Contoh wiring PLC dengan power supply 24 VDC<\/h2>\n\n\n\n
      Untuk pembelajaran siswa SMK, gambaran sederhananya dapat dibuat seperti ini:<\/p>\n\n\n\n
              AC 220 V\n       L       N\n       \u2502       \u2502\n       \u2514\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\n          \u2502\n     \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n     \u2502 POWER      \u2502\n     \u2502 SUPPLY     \u2502\n     \u2502 AC \u2192 24VDC \u2502\n     \u2514\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n           \u2502\n       \u250c\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2510\n       \u2502       \u2502\n     +24V     0V\n       \u2502       \u2502\n       \u2502    \u250c\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n       \u2514\u2500\u2500\u2500\u25ba\u2502    PLC     \u2502\n            \u2502            \u2502\n            \u2502 CPU + I\/O  \u2502\n            \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n
      Dari diagram tersebut dapat dipahami bahwa:<\/p>\n\n\n\n
      AC 220 V<\/strong> masuk ke power supply \u2192 power supply menghasilkan 24 VDC<\/strong> \u2192 24 VDC digunakan untuk PLC dan\/atau perangkat DC sesuai desain sistem.<\/p>\n\n\n\n
      6. Hubungan power supply dengan input dan output PLC<\/h2>\n\n\n\n
      Misalnya kita mempunyai sensor 24 VDC dan PLC dengan input DC.<\/p>\n\n\n\n
      +24V \u2500\u2500\u2500\u2500\u2500\u2500\u2500 Sensor \u2500\u2500\u2500\u2500\u2500\u2500\u2500 PLC INPUT\n  \u2502\n  \u2502\n  \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 PLC +24V\n\n0V  \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 PLC 0V\/COM\n<\/code><\/pre>\n\n\n\n
      Ketika sensor aktif, PLC menerima sinyal pada terminal input yang sesuai. CPU kemudian menjalankan program dan menentukan output mana yang harus diaktifkan.<\/p>\n\n\n\n
      Contoh sederhananya:<\/p>\n\n\n\n
      Sensor mendeteksi benda \u2192 Input PLC ON \u2192 Program diproses \u2192 Output PLC ON \u2192 Motor\/solenoid bekerja.<\/strong><\/p>\n\n\n\n
      7. Hal penting saat membaca wiring diagram<\/h2>\n\n\n\n
      Ketika melihat wiring diagram PLC, jangan langsung menghubungkan kabel. Biasakan membaca diagram dari sumber listrik menuju beban<\/strong>.<\/p>\n\n\n\n
      Urutannya dapat dipelajari seperti ini:<\/p>\n\n\n\n
      Sumber \u2192 Pengaman \u2192 Power Supply \u2192 PLC \u2192 Input\/Output \u2192 Beban<\/strong><\/p>\n\n\n\n
      Perhatikan juga simbol dan keterangan terminal pada manual PLC yang sebenarnya digunakan<\/strong>.<\/p>\n\n\n\n
      \u26a0\ufe0f Keselamatan<\/h3>\n\n\n\n
      Bagian AC 220 V dapat berbahaya dan berisiko menyebabkan sengatan listrik atau kebakaran. Praktik wiring sebaiknya dilakukan dengan sumber listrik dimatikan, menggunakan pengaman yang sesuaikan.<\/p>\n\n\n\n
      <\/p>\n","protected":false},"excerpt":{"rendered":"
      power supply PLC mulai dari fungsi, jenis tegangan, sampai cara membaca wiring diagram power supply PLC dengan bahasa yang mudah […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4],"tags":[],"class_list":["post-473","post","type-post","status-publish","format-standard","hentry","category-deskripsi-kategori-logika-dasar-otomasi-selamat-da"],"_links":{"self":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=473"}],"version-history":[{"count":3,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/473\/revisions"}],"predecessor-version":[{"id":719,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/473\/revisions\/719"}],"wp:attachment":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}