{"id":529,"date":"2026-10-07T05:29:46","date_gmt":"2026-10-07T05:29:46","guid":{"rendered":"https:\/\/otomasiplcbandung.com\/?p=529"},"modified":"2026-10-09T14:31:11","modified_gmt":"2026-10-09T14:31:11","slug":"bab-6","status":"publish","type":"post","link":"https:\/\/otomasiplcbandung.com\/?p=529","title":{"rendered":"BAB 6 # BELAJAR PLC DASAR OUTPUT, RELAY DAN KONTAKTOR"},"content":{"rendered":"\n

OUTPUT PLC, RELAY, KONTAKTOR, DAN INSTALASI MOTOR<\/h1>\n\n\n\n

1. Gambaran sistem secara keseluruhan<\/h2>\n\n\n\n

Sebelum masuk ke wiring, siswa perlu melihat gambaran besarnya:<\/p>\n\n\n\n

\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502  SENSOR  \u2502\n\u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2518\n     \u2502\n     \u25bc\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 INPUT PLC\u2502\n\u2502   X0     \u2502\n\u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2518\n     \u2502\n     \u25bc\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 PROGRAM  \u2502\n\u2502  LADDER  \u2502\n\u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2518\n     \u2502\n     \u25bc\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 OUTPUT PLC\u2502\n\u2502    Y0     \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2518\n      \u2502\n      \u25bc\n   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n   \u2502 RELAY\u2502\n   \u2514\u2500\u2500\u252c\u2500\u2500\u2500\u2518\n      \u2502\n      \u25bc\n \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n \u2502 KONTAKTOR \u2502\n \u2514\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2518\n       \u2502\n       \u25bc\n     MOTOR\n<\/code><\/pre>\n\n\n\n
Inilah hubungan antara input, PLC, dan output<\/strong>.<\/p>\n\n\n\n
\n\n\n\n
2. Mengapa kita menggunakan relay?<\/h1>\n\n\n\n
Output PLC tidak selalu boleh langsung mengendalikan semua beban.<\/p>\n\n\n\n
Misalnya PLC ingin mengendalikan:<\/p>\n\n\n\n
    \n
  • Kontaktor<\/li>\n\n\n\n
  • Solenoid valve<\/li>\n\n\n\n
  • Lampu<\/li>\n\n\n\n
  • Buzzer<\/li>\n\n\n\n
  • Relay tambahan<\/li>\n<\/ul>\n\n\n\n
    Relay dapat digunakan sebagai perantara\/penguat interface dan pemisah rangkaian kontrol<\/strong>, sesuai ratingnya.<\/p>\n\n\n\n
    Konsepnya:<\/p>\n\n\n\n
    PLC\n \u2502\n \u2502 sinyal kontrol\n \u25bc\nRELAY\n \u2502\n \u2502 kontak relay\n \u25bc\nBEBAN\n<\/code><\/pre>\n\n\n\n
    Namun relay juga mempunyai batas arus dan tegangan. Rating kontak harus sesuai dengan beban dan aplikasinya.<\/strong><\/p>\n\n\n\n
    \n\n\n\n
    3. Relay secara sederhana<\/h1>\n\n\n\n
    Relay dapat kita bayangkan memiliki dua bagian:<\/p>\n\n\n\n
    Coil<\/h3>\n\n\n\n
    Bagian elektromagnet.<\/p>\n\n\n\n
    A1 \u2500\u2500\u2500\u2500\u2500 COIL \u2500\u2500\u2500\u2500\u2500 A2\n<\/code><\/pre>\n\n\n\n
    Ketika coil mendapatkan tegangan:<\/p>\n\n\n\n
    COIL ON\n  \u2193\nMedan magnet terbentuk\n  \u2193\nKontak berubah posisi\n<\/code><\/pre>\n\n\n\n
    Kontak<\/h3>\n\n\n\n
    Contohnya:<\/p>\n\n\n\n
    COM\n \u2502\n \u251c\u2500\u2500\u2500\u2500 NO\n \u2502\n \u2514\u2500\u2500\u2500\u2500 NC\n<\/code><\/pre>\n\n\n\n
      \n
    • COM<\/strong> = common<\/li>\n\n\n\n
    • NO<\/strong> = Normally Open<\/li>\n\n\n\n
    • NC<\/strong> = Normally Closed<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n
      4. Kondisi relay OFF<\/h1>\n\n\n\n
      Ketika coil belum diberi tegangan:<\/p>\n\n\n\n
             RELAY OFF\n\nCOM \u2500\u2500\u2500\u2500\u2500\u2500\u2500 NC\n       X\n       NO\n<\/code><\/pre>\n\n\n\n
      Kontak NO belum tersambung.<\/p>\n\n\n\n
      \n\n\n\n
      5. Kondisi relay ON<\/h1>\n\n\n\n
      Ketika coil diberi tegangan:<\/p>\n\n\n\n
             RELAY ON\n\nCOM \u2500\u2500\u2500\u2500\u2500\u2500\u2500 NO\n<\/code><\/pre>\n\n\n\n
      Kontak NO menjadi terhubung.<\/p>\n\n\n\n
      Jadi PLC dapat menggunakan relay untuk mengendalikan rangkaian lain.<\/p>\n\n\n\n
      \n\n\n\n
      6. Output PLC mengaktifkan relay 24 VDC<\/h1>\n\n\n\n
      Contoh konsep:<\/p>\n\n\n\n
             PLC\n   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n   \u2502          \u2502\n   \u2502    Y0 \u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n   \u2502          \u2502         \u2502\n   \u2502   COM \u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2510     \u2502\n   \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518   \u2502     \u2502\n                  \u2502   COIL\n                  \u2502   RELAY\n                  \u2502     \u2502\n                  \u2514\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n
      Catatan:<\/strong> bentuk wiring output berbeda-beda tergantung apakah output PLC berupa relay, transistor sourcing\/sinking, dan bagaimana COM output dirancang. Jadi diagram terminal PLC yang sebenarnya harus selalu mengikuti manual pabrikan.<\/p>\n\n\n\n
      \n\n\n\n
      7. Relay mengendalikan kontaktor<\/h1>\n\n\n\n
      Sekarang kita naik satu tingkat.<\/p>\n\n\n\n
      PLC\n \u2502\n \u25bc\nRELAY\n \u2502\n \u25bc\nCOIL KONTAKTOR\n \u2502\n \u25bc\nKONTAKTOR MENARIK\n \u2502\n \u25bc\nKONTAK DAYA BERUBAH\n \u2502\n \u25bc\nMOTOR BEKERJA\n<\/code><\/pre>\n\n\n\n
      Di sini mulai memahami bahwa PLC tidak harus langsung membawa daya motor<\/strong>.<\/p>\n\n\n\n
      PLC memberikan perintah kontrol.<\/p>\n\n\n\n
      Kontaktor melakukan switching daya motor sesuai desain sistem.<\/p>\n\n\n\n
      \n\n\n\n
      8. Apa itu kontaktor?<\/h1>\n\n\n\n
      Kontaktor adalah perangkat switching elektromagnetik yang dirancang untuk mengendalikan beban seperti motor, sesuai ratingnya.<\/p>\n\n\n\n
      Secara sederhana:<\/p>\n\n\n\n
              KONTAKTOR\n\n     \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n     \u2502    COIL      \u2502\n     \u2502      \u2193       \u2502\n     \u2502  \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510   \u2502\n     \u2502  \u2502 CONTACT\u2502  \u2502\n     \u2502  \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518   \u2502\n     \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n
      Ketika coil aktif:<\/p>\n\n\n\n
      COIL ON\n  \u2193\nKontak utama berubah\n  \u2193\nBeban dapat diberi daya\n<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      9. Rangkaian kontrol dan rangkaian daya<\/h1>\n\n\n\n
      Ini sangat penting.<\/p>\n\n\n\n
      Kita pisahkan menjadi dua bagian<\/strong>.<\/p>\n\n\n\n
      A. Rangkaian kontrol<\/h3>\n\n\n\n
      Misalnya:<\/p>\n\n\n\n
      24 VDC\n  \u2502\n  \u25bc\nSensor\n  \u2502\n  \u25bc\nPLC\n  \u2502\n  \u25bc\nRelay\n  \u2502\n  \u25bc\nCoil kontaktor\n<\/code><\/pre>\n\n\n\n
      B. Rangkaian daya<\/h3>\n\n\n\n
      SUMBER DAYA\n     \u2502\n     \u25bc\nPROTEKSI\n     \u2502\n     \u25bc\nKONTAKTOR\n     \u2502\n     \u25bc\nMOTOR\n<\/code><\/pre>\n\n\n\n
      Jadi jangan mencampuradukkan:<\/p>\n\n\n\n
      rangkaian kontrol<\/strong> dengan rangkaian daya<\/strong>.<\/p>\n\n\n\n
      \n\n\n\n
      10. Contoh sistem conveyor sederhana<\/h1>\n\n\n\n
      Sekarang kita buat contoh yang sangat cocok untuk tehnisi <\/p>\n\n\n\n
      Komponen:<\/h3>\n\n\n\n
        \n
      • Power supply 24 VDC<\/li>\n\n\n\n
      • PLC<\/li>\n\n\n\n
      • Sensor PNP<\/li>\n\n\n\n
      • Push button START<\/li>\n\n\n\n
      • Push button STOP<\/li>\n\n\n\n
      • Relay\/interface jika diperlukan<\/li>\n\n\n\n
      • Kontaktor<\/li>\n\n\n\n
      • Motor conveyor<\/li>\n\n\n\n
      • Perangkat proteksi motor yang sesuai<\/li>\n<\/ul>\n\n\n\n
        Alur kerja:<\/p>\n\n\n\n
                BENDA\n          \u2193\n       SENSOR\n          \u2193\n          X0\n          \u2193\n         PLC\n          \u2193\n          Y0\n          \u2193\n        RELAY\n          \u2193\n      KONTAKTOR\n          \u2193\n        MOTOR\n          \u2193\n      CONVEYOR\n<\/code><\/pre>\n\n\n\n
        \n\n\n\n
        11. Contoh ladder sederhana<\/h1>\n\n\n\n
        Untuk awal, kita buat sangat sederhana:<\/p>\n\n\n\n
        |----[ X0 ]----------------( Y0 )----|\n<\/code><\/pre>\n\n\n\n
        Artinya:<\/p>\n\n\n\n
        \n
        Jika sensor X0 ON, output Y0 ON.<\/p>\n<\/blockquote>\n\n\n\n
        Kemudian Y0 mengaktifkan rangkaian kontrol kontaktor sesuai desain.<\/p>\n\n\n\n
        \n\n\n\n
        12. Menambahkan START dan STOP<\/h1>\n\n\n\n
        Kemudian kita buat rangkaian yang lebih realistis:<\/p>\n\n\n\n
        |----[\/X1]----+----[ X0 ]--------( Y0 )\n|             |\n|             +----[ Y0 ]--------|\n<\/code><\/pre>\n\n\n\n
        Misalnya:<\/p>\n\n\n\n
          \n
        • X0 = START<\/li>\n\n\n\n
        • X1 = STOP<\/li>\n\n\n\n
        • Y0 = perintah RUN<\/li>\n<\/ul>\n\n\n\n
          Ketika START ditekan:<\/p>\n\n\n\n
          START\n \u2193\nX0 ON\n \u2193\nY0 ON\n \u2193\nKontaktor aktif\n \u2193\nMotor berjalan\n<\/code><\/pre>\n\n\n\n
          Kemudian kontak Y0 digunakan sebagai self-holding<\/strong> sesuai logika program.<\/p>\n\n\n\n
          Ketika STOP ditekan:<\/p>\n\n\n\n
          STOP\n \u2193\nX1 memutus logika\n \u2193\nY0 OFF\n \u2193\nKontaktor OFF\n \u2193\nMotor berhenti\n<\/code><\/pre>\n\n\n\n
          \n\n\n\n
          13. Tambahkan sensor untuk keselamatan proses<\/h1>\n\n\n\n
          Sekarang sistem menjadi lebih menarik.<\/p>\n\n\n\n
          Misalnya conveyor membawa benda.<\/p>\n\n\n\n
          START\n  \u2193\nMOTOR ON\n  \u2193\nCONVEYOR BERJALAN\n  \u2193\nSENSOR MENDETEKSI BENDA\n  \u2193\nPLC MEMPROSES\n  \u2193\nOUTPUT\n  \u2193\nMOTOR \/ SOLENOID\n<\/code><\/pre>\n\n\n\n
          Dari sini mulai bisa membuat mini project industri<\/strong>.<\/p>\n\n\n\n
          \n\n\n\n
          14. Keselamatan yang harus ditanamkan <\/h1>\n\n\n\n
          Bagian ini sangat penting, <\/p>\n\n\n\n
          Untuk latihan PLC, sebaiknya memulai dari 24 VDC<\/strong>.<\/p>\n\n\n\n
          Untuk motor dan rangkaian daya yang menggunakan tegangan berbahaya:<\/p>\n\n\n\n
            \n
          • Gunakan pengaman yang sesuai.<\/li>\n\n\n\n
          • Gunakan kontaktor dengan rating yang tepat.<\/li>\n\n\n\n
          • Gunakan proteksi motor yang sesuai.<\/li>\n\n\n\n
          • Pastikan grounding\/protective earth sesuai instalasi.<\/li>\n\n\n\n
          • Gunakan emergency stop sesuai kebutuhan keselamatan mesin.<\/li>\n\n\n\n
          • Jangan melakukan pengukuran tegangan berbahaya tanpa kompetensi dan pengawasan yang tepat.<\/li>\n\n\n\n
          • Selalu lakukan isolasi sumber energi sebelum pekerjaan wiring\/maintenance yang mengharuskannya.<\/li>\n<\/ul>\n\n\n\n
            Instruktur harus memastikan memahami prosedur keselamatan sebelum praktik rangkaian daya.<\/strong><\/p>\n\n\n\n
            \n\n\n\n
            15. Latihan praktik Bab 6<\/h1>\n\n\n\n
            Saya sarankan latihan dibuat bertingkat.<\/p>\n\n\n\n
            Praktik 1<\/h3>\n\n\n\n
            Push Button\n     \u2193\n X0 PLC\n     \u2193\n Y0\n     \u2193\nLampu 24 V\n<\/code><\/pre>\n\n\n\n
            Tujuannya:<\/p>\n\n\n\n
            Input \u2192 program \u2192 output.<\/strong><\/p>\n\n\n\n
            Praktik 2<\/h3>\n\n\n\n
            X0\n \u2193\nY0\n \u2193\nRelay\n \u2193\nLampu\n<\/code><\/pre>\n\n\n\n
            Tujuannya:<\/p>\n\n\n\n
            PLC \u2192 relay \u2192 beban.<\/strong><\/p>\n\n\n\n
            Praktik 3<\/h3>\n\n\n\n
            X0\n \u2193\nPLC\n \u2193\nY0\n \u2193\nRelay\/interface\n \u2193\nKontaktor\n \u2193\nMotor\n<\/code><\/pre>\n\n\n\n
            Tujuannya:<\/p>\n\n\n\n
            PLC \u2192 relay \u2192 kontaktor \u2192 motor.<\/strong><\/p>\n\n\n\n
            Praktik 3 sebaiknya dilakukan setelah memahami wiring, proteksi, dan prosedur keselamatan.<\/p>\n\n\n\n
            \n\n\n\n
             Kesimpulan Bab 6<\/h1>\n\n\n\n
            Kita harus memahami satu hal besar:<\/p>\n\n\n\n
            INPUT\nSensor \/ Button\n       \u2193\n       \u2193\n      PLC\n       \u2193\n    PROGRAM\n       \u2193\n     OUTPUT\n       \u2193\nRelay \/ Interface\n       \u2193\n   Kontaktor\n       \u2193\n      Motor\n<\/code><\/pre>\n\n\n\n
            <\/p>\n\n\n\n
            <\/p>\n","protected":false},"excerpt":{"rendered":"
            OUTPUT PLC, RELAY, KONTAKTOR, DAN INSTALASI MOTOR 1. Gambaran sistem secara keseluruhan Sebelum masuk ke wiring, siswa perlu melihat gambaran […]<\/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-529","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\/529","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=529"}],"version-history":[{"count":4,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/529\/revisions"}],"predecessor-version":[{"id":614,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/529\/revisions\/614"}],"wp:attachment":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}