How long does Siemens 6ES7390-0AA00-0AA0 repair take?

Standard turnaround for Siemens 6ES7390-0AA00-0AA0 repair is 5–7 business days from the day we receive the unit. Rush service (2–3 business days) is available — contact us before shipping.

Does the Siemens 6ES7390-0AA00-0AA0 repair come with a warranty?

Yes. All Siemens 6ES7390-0AA00-0AA0 repair, refurbished, and brand new units sold by Flexa Systems include a 2-year warranty covering parts and labor. Units are fully tested before shipping.

Can I get a quote before sending my Siemens 6ES7390-0AA00-0AA0?

Yes. Use the Get Quote for Repair button on this page or contact us directly. We provide a free diagnostic estimate once we receive the unit. No repair charges if you decide not to proceed.

Siemens

Siemens 6ES7390-0AA00-0AA0

SKU: 2100000012244

$25.00

2-Year Warranty

Free Diagnostics

5–7 Day Turnaround

Nationwide Service

6ES7390-0AA00-0AA0 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.

Technical Specifications

Part Number	6ES7390-0AA00-0AA0
Manufacturer	Siemens
Package / Type	BUS CONNECTOR

Compatibility

The 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.

Service Options

Repair Service

Ship 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.

Refurbished

In-stock Siemens 6ES7390-0AA00-0AA0 variable frequency drive, reconditioned to OEM specifications and verified under load. Ships immediately. 2-year warranty included.

Brand New

New 6ES7390-0AA00-0AA0 in original Siemens packaging. Full manufacturer warranty applies. Contact us to confirm availability and lead time.

Common Failure Modes

Intermittent 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.
6ES7390-0AA00-0AA0 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.
6ES7390-0AA00-0AA0 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.
Locking 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.

Frequently Asked Questions

Is the 6ES7390-0AA00-0AA0 compatible with other S7-300 bus connector variants, or can it replace connectors from other PLC families?

The 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.

How do I determine whether my 6ES7390-0AA00-0AA0 is repairable or needs to be replaced outright?

A 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.

Where can I get 6ES7390-0AA00-0AA0 repair service with a warranty?

Flexa 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.

Where can I get 6ES7390-0AA00-0AA0 repair service with a warranty?

Flexa 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.

Flexa 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.

Technical Specifications

Manufacturer:	Siemens
Type:	BUS CONNECTOR

Siemens 6ES7390-0AA00-0AA0

Technical Specifications

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