{"id":521,"date":"2026-10-07T04:03:36","date_gmt":"2026-10-07T04:03:36","guid":{"rendered":"https:\/\/otomasiplcbandung.com\/?p=521"},"modified":"2026-10-09T14:28:43","modified_gmt":"2026-10-09T14:28:43","slug":"bab-5","status":"publish","type":"post","link":"https:\/\/otomasiplcbandung.com\/?p=521","title":{"rendered":"BAB 5 #  BELAJAR PLC DASAR TROUBLE SHOOTING"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">TROUBLESHOOTING DENGAN AVO METER<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Tujuan pembelajaran<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Setelah mempelajari bab ini, siswa\/teknisi diharapkan mampu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Menentukan pengukuran yang tepat untuk suatu masalah.<\/li>\n\n\n\n<li>Memeriksa <strong>supply, ground, kabel, sensor, dan input PLC<\/strong>.<\/li>\n\n\n\n<li>Membedakan masalah supply dengan masalah sensor.<\/li>\n\n\n\n<li>Memeriksa sensor <strong>PNP dan NPN<\/strong>.<\/li>\n\n\n\n<li>Melakukan pemeriksaan dasar sensor kendaraan.<\/li>\n\n\n\n<li>Menemukan kabel putus atau koneksi buruk.<\/li>\n\n\n\n<li>Membuat kesimpulan berdasarkan hasil pengukuran.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">1. Prinsip utama troubleshooting<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya sebuah mesin tidak bekerja.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kesalahan yang sering dilakukan pemula:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">&#8220;Mungkin sensornya rusak.&#8221;<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Kemudian sensor diganti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ternyata masalahnya adalah <strong>kabel putus<\/strong>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Teknisi yang baik bekerja secara sistematis:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"> <code>       MASALAH\n           \u2193\n        SUPPLY\n           \u2193\n         GROUND\n           \u2193\n          KABEL\n           \u2193\n         SENSOR\n           \u2193\n       INPUT PLC\n           \u2193\n        PROGRAM\n           \u2193\n         OUTPUT\n           \u2193\n          BEBAN\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Jangan melompat-lompat.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">2. Kasus pertama \u2014 PLC tidak menyala<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya PLC mati total.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jangan langsung mengatakan PLC rusak.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kita mulai dari:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Langkah 1 \u2014 Periksa supply<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Gunakan VDC.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\ud83d\udd34 \u2192 +24 V\n\u26ab \u2192 0 V\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Jika:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2248 24 V<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2192 supply kemungkinan tersedia, lanjut pemeriksaan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jika:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>0 V<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2192 cari masalah pada power supply, fuse, kabel, atau sumber masuknya.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">3. Kasus kedua \u2014 PLC hidup, tetapi sensor tidak terbaca<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Sensor \u2192 X0 PLC\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Sensor mendeteksi benda, tetapi X0 tetap OFF.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kita periksa secara berurutan.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">A. Periksa supply sensor<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>Brown \u2192 Blue\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Hasil:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2248 24 V<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Berarti sensor mendapatkan supply.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">B. Periksa output sensor<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Untuk sensor PNP yang umum:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Black \u2192 Blue\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Sensor OFF:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2248 0 V<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sensor ON:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2248 24 V<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C. Periksa X0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ukur titik input sesuai konfigurasi PLC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jika output sensor berubah tetapi X0 tidak berubah:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Periksa kabel antara sensor dan PLC serta konfigurasi\/common input PLC.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">4. Kasus ketiga \u2014 Sensor PNP<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Kita gunakan contoh sederhana:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+24 V\n  \u2502\n  \u25bc\n SENSOR PNP\n  \u2502\n  \u2502 OUT\n  \u25bc\n X0 PLC\n  \u2502\n  \u25bc\n 0 V\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Sensor OFF<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>Output \u2248 0 V\nX0 = OFF\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Sensor ON<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>Output \u2248 24 V\nX0 = ON\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Jika sensor ON tetapi output tetap 0 V:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kemungkinan yang perlu diperiksa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Supply sensor<\/li>\n\n\n\n<li>Ground sensor<\/li>\n\n\n\n<li>Sensor<\/li>\n\n\n\n<li>Wiring output<\/li>\n\n\n\n<li>Objek tidak berada pada jarak sensing yang benar<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Jangan langsung mengganti sensor.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">5. Kasus keempat \u2014 Sensor NPN<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Untuk NPN:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+24 V\n  \u2502\n  \u25bc\n INPUT PLC\n  \u2502\n  \u25bc\n SENSOR NPN\n  \u2502\n  \u25bc\n 0 V\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Ketika sensor ON, transistor output menghubungkan rangkaian menuju 0 V.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hal yang sangat penting:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Wiring input PLC untuk PNP dan NPN tidak boleh disamakan begitu saja.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Kita harus melihat <strong>diagram input PLC dan terminal COM<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ini adalah alasan siswa perlu memahami datasheet sebelum memasang sensor.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">6. Kasus kelima \u2014 Kabel putus<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya sensor sebenarnya bagus, tetapi PLC tidak menerima sinyal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kita curiga kabel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Matikan sumber terlebih dahulu sebelum menggunakan mode continuity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kemudian:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Sensor OUT \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 X0 PLC\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Lakukan pemeriksaan kontinuitas sesuai prosedur dan pastikan rangkaian tidak bertegangan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jika:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>BEEP \ud83d\udd0a\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">jalur mempunyai kontinuitas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jika:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Tidak beep\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">ada kemungkinan jalur terputus.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Namun perlu diperhatikan bahwa continuity tidak selalu membuktikan kabel mampu membawa arus beban dengan baik. Untuk masalah koneksi yang intermittent atau resistansi kontak tinggi, pemeriksaan tambahan diperlukan.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">7. Kasus keenam \u2014 Kabel tidak putus, tetapi koneksi buruk<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Ini sering terjadi pada kendaraan dan instalasi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Contohnya:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Kabel \u2500\u2500\u2500 konektor \u2500\u2500\u2500 sensor\n             \u2191\n        koneksi buruk\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Secara continuity mungkin masih <strong>beep<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tetapi ketika rangkaian bekerja, tegangan dapat turun karena tahanan kontak yang tinggi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Karena itu teknisi perlu mengenal <strong>voltage drop test<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">8. Voltage Drop Test<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Ini salah satu teknik yang sangat berguna untuk teknisi kendaraan dan listrik.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya sebuah kabel seharusnya membawa tegangan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jangan hanya mengukur:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+24 V \u2192 0 V\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Kita juga dapat mengukur <strong>perbedaan tegangan pada kabel\/koneksi ketika rangkaian sedang bekerja<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Secara sederhana:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Supply \u2500\u2500\u2500 kabel \u2500\u2500\u2500 beban\n           \u2191\n       titik yang\n       diperiksa\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Jika terdapat drop tegangan yang tidak semestinya pada kabel atau koneksi, berarti ada kemungkinan:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kabel rusak<\/li>\n\n\n\n<li>Terminal longgar<\/li>\n\n\n\n<li>Korosi<\/li>\n\n\n\n<li>Konektor buruk<\/li>\n\n\n\n<li>Resistansi kontak terlalu tinggi<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ini sangat berguna untuk kendaraan.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">9. Kasus kendaraan \u2014 mesin sulit hidup<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya siswa menemukan kendaraan sulit hidup.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jangan langsung mengganti sensor CKP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gunakan pola:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Baterai\n   \u2193\nSupply ECU\n   \u2193\nGround\n   \u2193\nFuse\n   \u2193\nWiring\n   \u2193\nSensor\n   \u2193\nSignal\n   \u2193\nECU\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Untuk sensor kendaraan, <strong>jenis sinyal harus diketahui terlebih dahulu<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ada sensor yang menghasilkan:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tegangan analog<\/li>\n\n\n\n<li>Pulsa digital<\/li>\n\n\n\n<li>Frekuensi<\/li>\n\n\n\n<li>Perubahan resistansi<\/li>\n\n\n\n<li>Sinyal AC dari sensor tertentu<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Jadi AVO meter harus digunakan sesuai karakter sensor.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">10. Sensor kendaraan 3 kabel<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Contoh umum:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"> <code>      SENSOR\n    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n    \u2502           \u2502\n    \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n       \u2502 \u2502 \u2502\n       \u2502 \u2502 \u2514\u2500\u2500 SIGNAL\n       \u2502 \u2514\u2500\u2500\u2500\u2500 GROUND\n       \u2514\u2500\u2500\u2500\u2500\u2500\u2500 SUPPLY\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Teknisi perlu mencari tahu:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Mana supply?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Mana ground?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Mana signal?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jangan menentukan berdasarkan warna kabel saja.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gunakan:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Wiring diagram.<\/li>\n\n\n\n<li>Datasheet.<\/li>\n\n\n\n<li>Informasi sistem kendaraan.<\/li>\n\n\n\n<li>Pengukuran.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">11. Pemeriksaan ground<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Ini sering dianggap sepele.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Padahal <strong>ground yang buruk dapat menyebabkan banyak gejala aneh<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Supply = baik\nSensor = baik\nKabel = baik\nTetapi ground = buruk\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Akibatnya sensor atau ECU dapat bekerja tidak normal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Untuk siswa, tanamkan pemahaman:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Rangkaian listrik membutuhkan jalur lengkap. Tegangan supply saja tidak cukup.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">12. Kasus instalasi listrik<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Untuk teknisi listrik instalasi, prinsip troubleshooting juga sama.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya lampu tidak menyala:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SUMBER\n  \u2193\nPROTEKSI\n  \u2193\nSAKLAR\n  \u2193\nKABEL\n  \u2193\nLAMPU\n  \u2193\nRETURN\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Teknisi dapat menelusuri dari sumber menuju beban.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tetapi untuk instalasi tegangan jaringan, <strong>prosedur keselamatan harus menjadi prioritas<\/strong>. Siswa pemula jangan melakukan pengukuran langsung pada tegangan berbahaya tanpa pengawasan instruktur yang kompeten dan alat ukur yang sesuai kategori keselamatannya.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">13. Membuat &#8220;peta pengukuran&#8221;<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Ini metode yang sangat bagus untuk siswa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Misalnya rangkaian:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+24 V\n  \u2502\n  A\n  \u2502\n SWITCH\n  \u2502\n  B\n  \u2502\n SENSOR\n  \u2502\n  C\n  \u2502\n INPUT PLC\n  \u2502\n  D\n  \u2502\n 0 V\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Kemudian siswa mengukur titik:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A \u2192 B \u2192 C \u2192 D<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">dan mencatat hasil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dengan cara ini mereka belajar mencari:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Di titik mana sinyal berhenti?<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Itulah inti troubleshooting.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">14. Tabel troubleshooting<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Gejala<\/th><th>Pemeriksaan pertama<\/th><\/tr><\/thead><tbody><tr><td>PLC mati<\/td><td>Supply<\/td><\/tr><tr><td>Sensor mati<\/td><td>Supply + ground<\/td><\/tr><tr><td>Sensor ON tetapi PLC OFF<\/td><td>Output sensor \u2192 wiring \u2192 input<\/td><\/tr><tr><td>Fuse putus<\/td><td>Cari penyebab sebelum mengganti<\/td><\/tr><tr><td>Lampu tidak menyala<\/td><td>Supply \u2192 switch \u2192 kabel \u2192 lampu<\/td><\/tr><tr><td>Motor tidak bekerja<\/td><td>Supply kontrol \u2192 interlock \u2192 output \u2192 kontaktor<\/td><\/tr><tr><td>Sensor kendaraan tidak terbaca<\/td><td>Supply \u2192 ground \u2192 signal sesuai jenis sensor<\/td><\/tr><tr><td>Sinyal tidak stabil<\/td><td>Koneksi, ground, kabel, sensor, gangguan<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">15. Latihan kasus untuk siswa<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Sekarang kita buat seperti <strong>ujian praktik teknisi<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kasus:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sensor PNP terpasang pada X0.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ketika benda mendekat:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sensor menunjukkan indikator ON.<\/li>\n\n\n\n<li>Tetapi X0 PLC tetap OFF.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Siswa harus mencari penyebabnya.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Data:<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>Supply sensor = 24 V\nOutput sensor = 24 V\nX0 PLC         = 0 V\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Pertanyaan:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Di mana kemungkinan masalahnya?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Siswa harus berpikir:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Sensor \u2714\nSupply \u2714\nOutput \u2714\n       \u2193\nJalur menuju X0 ?\n       \u2193\nWiring \/ terminal \/ COM \/ konfigurasi input\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">I<strong>nilah latihan berpikir teknisi.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"> 16. Prinsip yang harus diingat<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Sahabatku, saya ingin bagian ini menjadi semacam <strong>kode etik kecil bagi teknisi pemula<\/strong>:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Jangan berkata:<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">&#8220;Sepertinya sensornya rusak.&#8221;<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Sebelum melakukan pengukuran.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lebih baik berkata:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>&#8220;Saya akan mengukur supply, ground, output, dan jalur sinyal terlebih dahulu.&#8221;<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Kemudian:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ukur \u2192 Catat \u2192 Bandingkan \u2192 Analisis \u2192 Simpulkan.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"> Tugas Bab 5<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Siswa dapat diberikan sebuah rangkaian sederhana:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>24 VDC\n  \u2502\nPush Button\n  \u2502\n X0 PLC\n  \u2502\nProgram\n  \u2502\n Y0\n  \u2502\nLampu\n  \u2502\n 0 V\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Guru sengaja membuat <strong>satu gangguan<\/strong>, misalnya:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kabel X0 dilepas.<\/li>\n\n\n\n<li>Supply sensor dilepas.<\/li>\n\n\n\n<li>Ground dilepas.<\/li>\n\n\n\n<li>Push button rusak.<\/li>\n\n\n\n<li>Kabel output putus.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Siswa harus menemukan gangguan <strong>hanya berdasarkan pengukuran dan pengamatan<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dengan demikian siswa belajar menjadi <strong>teknisi<\/strong>, bukan sekadar operator. \ud83d\udd27<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"> Penutup Bab 5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kalau kita lihat perjalanan materi kita sekarang:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>BAB 1\nDasar 24 VDC\n      \u2193\nBAB 2\nPengukuran dengan AVO\n      \u2193\nBAB 3\nSensor + PNP\/NPN\n      \u2193\nBAB 4\nAVO Meter untuk Teknisi\n      \u2193\nBAB 5\nTroubleshooting\n      \u2193\n       ?\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Terima kasih <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>TROUBLESHOOTING DENGAN AVO METER Tujuan pembelajaran Setelah mempelajari bab ini, siswa\/teknisi diharapkan mampu: 1. Prinsip utama troubleshooting Misalnya sebuah mesin [&hellip;]<\/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-521","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\/521","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=521"}],"version-history":[{"count":3,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"predecessor-version":[{"id":612,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions\/612"}],"wp:attachment":[{"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/otomasiplcbandung.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}