{"product_id":"siemens-6es7421-7dh00-0ab0-sm-421-diagnostics-alarm","title":"Siemens | 6ES7421-7DH00-0AB0 SM 421 Diagnostics Alarm","description":"\u003ch2 style=\"color:#1a1a1a;\"\u003eSiemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module\u003c\/h2\u003e\n\n\u003cp style=\"margin-bottom:20px;\"\u003e\u003cstrong style=\"color:#0066b3;\"\u003eSiemens 6ES7421-7DH00-0AB0\u003c\/strong\u003e is a SIMATIC S7-400 SM 421 digital input module with 16 isolated UC 24-60V inputs. Features parameterizable input delay, wire-break monitoring, diagnostics, and alarms. Weight approximately 600 g.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#0066b3; margin-top:20px;\"\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin-bottom:20px; font-size:14px;\"\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eArticle No.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e6ES7421-7DH00-0AB0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eDigital Input Module SM 421\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eInput Voltage Type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eAC\/DC (UC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eRated Value\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e24V to 60V UC (47-63 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eBackplane Current (5V)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e150 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003ePower Loss\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e8W typ (3.5W @ 24V, 6.5W @ 48V, 8.0W @ 60V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eApproximately 600 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color:#0066b3; margin-top:20px;\"\u003eInput Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin-bottom:20px; font-size:14px;\"\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eSignal \"0\" Voltage\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e-6 to +6V DC \/ 0-5V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eSignal \"1\" Voltage\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e15-72V DC \/ -15 to -72V DC \/ 15-60V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eInput Current \"1\"\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e4 to 10 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eInput Delay\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eParameterizable: 0.5 \/ 3 \/ 10 \/ 20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eCable Length (Shielded)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e1000 m max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eCable Length (Unshielded)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e600 m max (3\/10\/20 ms), 100 m (0.5 ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color:#0066b3; margin-top:20px;\"\u003eDiagnostics \u0026amp; Isolation\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin-bottom:20px; font-size:14px;\"\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eDiagnostics Function\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eYes, parameterizable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eWire-Break Monitoring\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eYes, I \u0026gt; 0.7 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eChannel Separation\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eYes, between each channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eIsolation Test Voltage\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e1500 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e2-Wire Sensor Quiescent Current\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e0.5 to 2 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color:#0066b3; margin-top:20px;\"\u003eDimensions\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin-bottom:20px; font-size:14px;\"\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd; padding:8px; text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eWidth\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eHeight\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e290 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003eDepth\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd; padding:8px;\"\u003e210 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color:#0066b3; margin-top:20px;\"\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What input voltage range does the 6ES7421-7DH00-0AB0 support?\u003c\/strong\u003e\u003cbr\u003eA1: UC 24V to 60V AC\/DC at 47-63 Hz.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What input delay settings are available?\u003c\/strong\u003e\u003cbr\u003eA2: Parameterizable at 0.5, 3, 10, or 20 ms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: How are the channels isolated?\u003c\/strong\u003e\u003cbr\u003eA3: Each channel is individually isolated, tested at 1500 VAC.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":67854308376708,"sku":"6ES7421-7DH00-0AB0","price":148.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/6ES7421-7DH00-0AB0.jpg?v=1793539037","url":"https:\/\/www.etowonauto.com\/fr\/products\/siemens-6es7421-7dh00-0ab0-sm-421-diagnostics-alarm","provider":"Etowon Auto","version":"1.0","type":"link"}