{"product_id":"siemens-6es7390-0aa00-0aa0","title":"Siemens 6ES7390-0AA00-0AA0","description":"\u003cstyle\u003e\n.flexa-desc { font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif; color:#1f2937; line-height:1.7; }\n.flexa-desc .desc-intro { font-size:15px; color:#374151; margin-bottom:0; }\n.flexa-desc .desc-section { margin-top:28px; }\n.flexa-desc .desc-section-title { font-size:15px; font-weight:700; color:#111827; text-transform:uppercase; letter-spacing:.05em; padding-bottom:10px; border-bottom:2px solid #e5e7eb; margin-bottom:16px; }\n.flexa-desc .desc-service-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }\n.flexa-desc .desc-service-card { border-radius:10px; padding:16px; border:1px solid #e5e7eb; }\n.flexa-desc .desc-service-repair { background:#fff7ed; border-color:#fed7aa; }\n.flexa-desc .desc-service-ref { background:#f0fdf4; border-color:#bbf7d0; }\n.flexa-desc .desc-service-new { background:#eff6ff; border-color:#bfdbfe; }\n.flexa-desc .desc-service-label { font-weight:700; font-size:13px; text-transform:uppercase; letter-spacing:.04em; margin-bottom:8px; }\n.flexa-desc .desc-service-repair .desc-service-label { color:#c2410c; }\n.flexa-desc .desc-service-ref .desc-service-label { color:#15803d; }\n.flexa-desc .desc-service-new .desc-service-label { color:#1d4ed8; }\n.flexa-desc .desc-service-body { font-size:13px; color:#4b5563; line-height:1.6; }\n.flexa-desc .desc-faq-item { margin-bottom:16px; padding:14px 16px; background:#f9fafb; border-radius:8px; border-left:3px solid #e5e7eb; }\n.flexa-desc .desc-faq-item:last-child { margin-bottom:0; }\n.flexa-desc .desc-faq-q { font-weight:700; font-size:14px; color:#111827; margin-bottom:6px; }\n.flexa-desc .desc-faq-a { font-size:13px; color:#4b5563; line-height:1.6; }\n.flexa-desc .desc-seo { margin-top:24px; padding:14px 16px; background:#f3f4f6; border-radius:8px; font-size:13px; color:#6b7280; line-height:1.6; }\n@media(max-width:640px){ .flexa-desc .desc-service-grid { grid-template-columns:1fr; } }\n\u003c\/style\u003e\n\u003cdiv class=\"flexa-desc\"\u003e\n  \u003cp class=\"desc-intro\"\u003e6ES7390-0AA00-0AA0 repair service is a critical need for facilities running SIMATIC S7-300 infrastructure that depend on this 120V bus connector to maintain backplane communication across CPU and signal modules. Whether you're sourcing a Siemens 6ES7390-0AA00-0AA0 repair or need a 6ES7390-0AA00-0AA0 refurbished unit to get a line back online fast, Flexa Systems stocks and services this component with full functional validation. This bus connector — part number 6ES73900AA000AA0 — physically bridges adjacent S7-300 rack modules, carrying both power and data signals along the DIN-rail mounted backplane at 120V AC operation. Facilities in food processing, water treatment, and discrete manufacturing frequently contact us for 6ES7390-0AA00-0AA0 troubleshooting after experiencing intermittent communication faults traced back to damaged connector pins or cracked housings. If you've been searching for 6ES7390-0AA00-0AA0 repair near me, Flexa Systems provides depot repair with free diagnostics and fast return shipping from our Lewisville TX facility. Our technicians handle industrial VFD repair and PLC peripheral components alike, inspecting contact integrity, locking tab condition, and signal continuity before any unit leaves our bench. For plants that cannot afford extended downtime, we also carry ready-to-ship 6ES7390-0AA00-0AA0 for sale inventory so a verified replacement can be on-site within days.\u003c\/p\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;border-radius:8px;overflow:hidden;border:1px solid #e5e7eb;\"\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003e6ES7390-0AA00-0AA0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;color:#374151;width:38%;font-size:13px;\"\u003ePackage \/ Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;color:#1f2937;font-size:13px;\"\u003eBUS CONNECTOR\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eCompatibility\u003c\/div\u003e\n  \u003cp style=\"font-size:14px;color:#374151;margin:0;line-height:1.7;\"\u003eThe Siemens 6ES7390-0AA00-0AA0 is 6ES7390-0AA00-0AA0 compatible with the full S7-300 rack family, including CPU modules such as the 6ES7315-2AH14-0AB0 and 6ES7317-2EK14-0AB0, as well as digital and analog I\/O modules in the SM 300 series. Siemens 6ES7390-0AA00-0AA0 integration extends to power supply modules like the 6ES7307-1BA01-0AA0, where the connector maintains the U-bus and P-bus continuity required for coordinated rack operation under PROFIBUS DP and MPI network topologies. This part is a direct 6ES7390-0AA00-0AA0 replacement for earlier-revision bus connectors used in S7-300 racks paired with IM 360\/361 interface modules (6ES7360-3AA01-0AA0 and 6ES7361-3CA01-0AA0) for multi-tier rack expansion configurations. It is not cross-compatible with S7-400 or ET 200M backplane connectors, so rack family verification is essential before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eService Options\u003c\/div\u003e\n  \u003cdiv class=\"desc-service-grid\"\u003e\n    \u003cdiv class=\"desc-service-card desc-service-repair\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eRepair Service\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eShip your faulty 6ES7390-0AA00-0AA0 to our facility. Our certified technicians perform IGBT testing, capacitor inspection, gate driver diagnostics, and full load testing. Typical turnaround: 5–7 business days. 2-year warranty included.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"desc-service-card desc-service-ref\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eRefurbished\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eIn-stock Siemens 6ES7390-0AA00-0AA0 variable frequency drive, reconditioned to OEM specifications and verified under load. Ships immediately. 2-year warranty included.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"desc-service-card desc-service-new\"\u003e\n      \u003cdiv class=\"desc-service-label\"\u003eBrand New\u003c\/div\u003e\n      \u003cdiv class=\"desc-service-body\"\u003eNew 6ES7390-0AA00-0AA0 in original Siemens packaging. Full manufacturer warranty applies. Contact us to confirm availability and lead time.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eCommon Failure Modes\u003c\/div\u003e\n  \u003cul style=\"margin:0;padding-left:20px;line-height:1.7;\"\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003eIntermittent CPU-to-I\/O communication loss on S7-300 racks caused by worn or bent U-bus contact pins inside the 6ES7390-0AA00-0AA0 connector, often triggered by repeated module insertion cycles exceeding the rated 100-operation contact lifespan.\u003c\/li\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003e6ES7390-0AA00-0AA0 fault condition where the P-bus data lines lose continuity due to a cracked connector housing — typically caused by side-loading stress when modules are inserted at an angle rather than straight down onto the DIN rail.\u003c\/li\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003e6ES7390-0AA00-0AA0 troubleshooting frequently uncovers oxidized gold-plated contacts on units stored in high-humidity environments, resulting in sporadic STEP 7 hardware configuration errors and SF (system fault) LED activation on the CPU module.\u003c\/li\u003e\n\u003cli style=\"padding:5px 0;color:#374151;font-size:14px;\"\u003eLocking latch fracture on the bus connector body after thermal cycling in enclosures exceeding 60°C ambient, allowing micro-movement between mated modules that produces noise on the backplane and causes analog SM 331\/332 modules to report out-of-range values.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-section\"\u003e\n  \u003cdiv class=\"desc-section-title\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eIs the 6ES7390-0AA00-0AA0 compatible with other S7-300 bus connector variants, or can it replace connectors from other PLC families?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003eThe 6ES7390-0AA00-0AA0 compatible with S7-300 rack modules is a form-and-function match for the 6ES7390-0AA00-0AA0 replacement of older connectors such as the 6ES7390-0AA00-0AA0's predecessor used in early S7-315 and S7-317 configurations. It is not a drop-in replacement for S7-400 backplane connectors or third-party equivalents from Allen-Bradley ControlLogix or Schneider Modicon M340 families, as those platforms use proprietary backplane architectures. Within the Siemens ecosystem, this connector is interchangeable across standard S7-300 rail assemblies but should not be confused with ET 200M interface connectors, which carry a different pin layout. Always verify the rack generation and module revision level before substituting connectors sourced from surplus inventory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eHow do I determine whether my 6ES7390-0AA00-0AA0 is repairable or needs to be replaced outright?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003eA Siemens 6ES7390-0AA00-0AA0 is generally repairable when the fault is limited to oxidized contacts, a fractured locking tab, or a hairline housing crack that hasn't compromised the pin array geometry — these conditions respond well to contact cleaning, re-tensioning, and housing reinforcement at the component level. However, if physical inspection reveals bent or sheared U-bus or P-bus pins, or if 6ES7390-0AA00-0AA0 repair attempts fail to restore continuity readings below 0.1 ohm across all contact positions, replacement is the more cost-effective path. Units that have been subjected to arc damage from hot-swapping under live backplane voltage typically show carbon tracking on the connector face that cannot be reversed through cleaning alone. Flexa Systems offers free diagnostics on every unit received, so you'll get a clear repair-vs-replace recommendation before any work is authorized.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eWhere can I get 6ES7390-0AA00-0AA0 repair service with a warranty?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003eFlexa Systems, based in Lewisville TX, provides depot-level 6ES7390-0AA00-0AA0 repair service with a 2-year warranty on all repaired and refurbished units, covering both parts and workmanship. Standard turnaround runs 5–7 business days from receipt, and rush processing is available for critical production lines. We ship nationwide, so whether you're in California, the Gulf Coast, or the Midwest, getting a verified unit back quickly is straightforward — and if you need to buy 6ES7390-0AA00-0AA0 USA stock off the shelf rather than waiting on repair, we maintain in-house inventory of tested units with the same 2-year warranty coverage. Contact our team for free diagnostics and a no-obligation quote before committing to any repair or purchase.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-item\"\u003e\n\u003cdiv class=\"desc-faq-q\"\u003eWhere can I get 6ES7390-0AA00-0AA0 repair service with a warranty?\u003c\/div\u003e\n\u003cdiv class=\"desc-faq-a\"\u003eFlexa Systems provides professional 6ES7390-0AA00-0AA0 repair service from our facility in Lewisville, TX, serving customers nationwide. Standard turnaround is 5–7 business days from receipt and all repaired units ship with a 2-year warranty. Rush service (2–3 business days) is also available.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n  \u003cdiv class=\"desc-seo\"\u003eFlexa Systems specializes in Siemens 6ES7390-0AA00-0AA0 variable frequency drive repair, supplying refurbished and new units backed by a 2-year warranty. All drives are load-tested before shipping. Serving industrial facilities nationwide from Lewisville, TX.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Repair Service","offer_id":54215768244499,"sku":"2100000012244","price":0.0,"currency_code":"USD","in_stock":true},{"title":"Refurbished","offer_id":54215768277267,"sku":"2100000012244","price":25.0,"currency_code":"USD","in_stock":true},{"title":"Brand New","offer_id":54215768310035,"sku":"2100000012244","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/1948\/5715\/files\/9930b1a7247543029ca11d00346775ed_default.png?v=1779955369","url":"https:\/\/flexa-systems.com\/products\/siemens-6es7390-0aa00-0aa0","provider":"Flexa Systems","version":"1.0","type":"link"}