{"id":739,"date":"2026-10-12T18:41:00","date_gmt":"2026-10-12T18:41:00","guid":{"rendered":"https:\/\/otomasiplcbandung.com\/?p=739"},"modified":"2026-10-12T18:41:30","modified_gmt":"2026-10-12T18:41:30","slug":"rangkaian-plc-pada-mesin-vacuum-tumbler","status":"publish","type":"post","link":"https:\/\/otomasiplcbandung.com\/?p=739","title":{"rendered":"RANGKAIAN PLC PADA MESIN VACUUM TUMBLER"},"content":{"rendered":"\n

SIstem kelistrikan berbasis PLC (Programmable Logic Controller)<\/strong> pada Vacuum Tumbler<\/em> sangat penting.<\/p>\n\n\n\n

Berikut adalah penjelasan mendalam mengenai arsitektur kelistrikan PLC pada mesin Vacuum Tumbler<\/em> untuk panduan .<\/p>\n\n\n\n

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1. Arsitektur Diagram Blok Kelistrikan PLC<\/h2>\n\n\n\n

Sistem kelistrikan ini dibagi menjadi tiga bagian utama yang harus dipahami teknisi: Input (Sensor\/Tombol) \u2192 Processing (PLC) \u2192 Output (Aktuator\/Motor)<\/strong>.<\/p>\n\n\n\n

[ INPUT ]                          [ PROCESSING ]                  [ OUTPUT ]\n- Tombol Start \/ Stop \/ Emergency  --> [  P L C  ] --------------> - Kontaktor Motor Drum\n- Vacuum Pressure Switch \/ Sensor  --> [ (Otak   ] --------------> - Kontaktor Pompa Vakum\n- Limit Switch Pintu Drum          --> [  Mesin) ] --------------> - Solenoid Valve (Buang Udara)\n- HMI \/ Touchscreen                <-- (Komunikasi) -------------> - Lampu Indikator \/ Buzzer\n<\/code><\/pre>\n\n\n\n
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2. Komponen Kelistrikan Utama & Fungsi Spesifiknya<\/h2>\n\n\n\n
Dalam modul BLK, ajak siswa membuka panel listrik (panel box<\/em>) dan mengidentifikasi komponen berikut:<\/p>\n\n\n\n
    \n
  • PLC Utama (Processor):<\/strong> Membaca program instruksi (misal: “Nyalakan pompa vakum sampai -0.8 Bar, lalu putar drum ke kanan selama 10 menit, jeda 2 menit, lalu putar balik”).<\/li>\n\n\n\n
  • HMI (Human Machine Interface) \/ Layar Sentuh:<\/strong> Antarmuka tempat operator mengatur timer<\/em>, kecepatan putaran (RPM<\/em>), dan melihat status error.<\/li>\n\n\n\n
  • VFD (Variable Frequency Drive) \/ Inverter:<\/strong> Mengatur kecepatan putaran motor drum. PLC mengirimkan sinyal analog (0-10V atau 4-20mA) ke VFD untuk memperlambat atau mempercepat putaran agar daging tidak hancur.<\/li>\n\n\n\n
  • Vacuum Pressure Transmitter \/ Digital Pressure Switch:<\/strong> Sensor yang membaca tingkat kevacuman di dalam drum dan mengirim data ke PLC. Jika kevacuman turun akibat bocor, PLC akan memerintahkan pompa vakum menyala kembali secara otomatis.<\/li>\n\n\n\n
  • Interlocking Relays & Contactors:<\/strong> Sakelar elektromagnetik berdaya besar untuk mengalirkan listrik 3-Phase ke motor drum dan pompa vakum atas perintah sinyal kecil (24VDC) dari PLC.<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n
    3. Logika Urutan Kerja Kontrol PLC (Sequence of Operation)<\/h2>\n\n\n\n
    Harus paham alur logika berpikir mesin (Logika Ladder Diagram<\/em>) pada Vacuum Tumbler<\/em>:<\/p>\n\n\n\n
      \n
    1. Kondisi Awal (Safety Check):<\/strong> PLC mendeteksi Limit Switch<\/em> pintu dalam keadaan tertutup rapat dan tombol Emergency Stop<\/em> tidak ditekan. Jika tidak terpenuhi, sistem interlock<\/em> aktif dan mesin tidak bisa Start<\/em>.<\/li>\n\n\n\n
    2. Tahap Vakum (Evacuation):<\/strong> Saat tombol Start<\/em> ditekan, PLC menyalakan Output<\/em> untuk Kontaktor Pompa Vakum. Pompa menyala hingga Pressure Switch<\/em> mendeteksi tekanan target (misalnya -0.8 hingga -0.9 Bar).<\/li>\n\n\n\n
    3. Tahap Tumbling (Siklus Pemijatan):<\/strong> PLC mematikan pompa vakum (atau memosisikannya pada mode standby maintain<\/em>). PLC lalu menyalakan VFD untuk memutar Motor Drum ke kanan (Forward<\/em>).<\/li>\n\n\n\n
    4. Tahap Jeda & Balik (Interval):<\/strong> Setelah Timer 1<\/em> habis (misal 15 menit), PLC mematikan putaran, memberi jeda Timer 2<\/em> (misal 2 menit) agar daging jatuh, lalu menyalakan arah sebaliknya (Reverse<\/em>) melalui VFD.<\/li>\n\n\n\n
    5. Tahap Selesai (Ventilation):<\/strong> Setelah total waktu proses habis, PLC menghentikan drum, menyalakan alarm (Buzzer<\/em>), dan membuka Solenoid Valve<\/em> untuk memasukkan udara kembali ke dalam drum sehingga pintu bisa dibuka aman.<\/li>\n<\/ol>\n\n\n\n
      \n\n\n\n
      4. Panduan Troubleshooting Elektrikal PLC<\/h2>\n\n\n\n
      Berikut adalah tabel kasus nyata yang sering ditemui teknisi di lapangan untuk bahan latihan diagnosis siswa:<\/p>\n\n\n\n
      Gejala Masalah<\/th>Indikasi Elektro \/ PLC<\/th>Penyebab Utama<\/th>Cara Perbaikan & Tindakan Teknisi<\/th><\/tr>
      Pompa vakum tidak mau mati<\/strong> meskipun jarum vakum sudah maksimal.<\/td>Lampu indikator Input<\/em> PLC dari Pressure Switch<\/em> mati\/tidak merespon.<\/td>Sinyal dari Pressure Switch<\/em> putus atau sensor tersumbat cairan bumbu.<\/td>Cek kabel sensor. Bersihkan lubang sensor dari kerak bumbu. Kalibrasi ulang nilai batas atas di HMI.<\/td><\/tr>
      Motor drum tidak berputar<\/strong>, tapi pompa vakum bekerja normal.<\/td>Di layar VFD muncul kode error (misal: OL<\/em> \/ Overload<\/em> atau OC<\/em> \/ Overcurrent<\/em>).<\/td>Beban daging terlalu berat atau ada masalah mekanis (rantai macet).<\/td>Reset error pada VFD. Jangan langsung reset PLC. Periksa beban mekanis sebelum menyalakan ulang.<\/td><\/tr>
      Layar HMI Blank<\/strong> atau muncul tulisan “Communication Error”<\/em>.<\/td>Lampu indikator Link\/Comm<\/em> pada PLC berkedip merah atau mati.<\/td>Kabel data komunikasi (RS485 \/ Ethernet) antara PLC dan HMI longgar atau rusak akibat getaran mesin.<\/td>Matikan listrik. Cabut dan pasang kembali konektor kabel data. Ganti kabel jika ada indikasi putus digigit tikus.<\/td><\/tr>
      Mesin mati total tiba-tiba<\/strong> saat proses berjalan.<\/td>Lampu Run<\/em> pada PLC mati, indikator Power<\/em> 24VDC mati.<\/td>Power Supply<\/em> 24V terputus karena sekring (fuse<\/em>) putus akibat short circuit<\/em> pada solenoide atau sensor.<\/td>Gunakan multimeter untuk cek tegangan keluaran Power Supply<\/em>. Cari komponen yang korsleting sebelum mengganti fuse<\/em>.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      \n\n\n\n
      Edukasi K3 Elektrikal<\/h2>\n\n\n\n
      Tekankan kepa bahwa panel PLC Vacuum Tumbler<\/em> sangat rentan terhadap kelembapan dan air (karena proses cuci pabrik)<\/strong>.<\/p>\n\n\n\n
        \n
      • Ajarkan mereka untuk selalu memeriksa kondisi karet seal<\/em> pintu panel box.<\/li>\n\n\n\n
      • Saat melakukan troubleshooting<\/em> dalam kondisi panel terbuka dan mesin menyala, selalu gunakan sarung tangan isolator listrik<\/strong> dan pastikan lantai tempat berdiri kering atau dialasi karpet karet (insulation mat<\/em>).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
        SIstem kelistrikan berbasis PLC (Programmable Logic Controller) pada Vacuum Tumbler sangat penting. Berikut adalah penjelasan mendalam mengenai arsitektur kelistrikan PLC […]<\/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-739","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\/739","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=739"}],"version-history":[{"count":1,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/739\/revisions"}],"predecessor-version":[{"id":742,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/739\/revisions\/742"}],"wp:attachment":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}