Siemens 6AU1390-0AA00-0AA1 Spare Part for Industrial Maintenance

Siemens 6AU1390-0AA00-0AA1 Spare Part for Industrial Maintenance

The Siemens 6AU1390-0AA00-0AA1 is a ruggedized SIMOTION D-series motion controller and servo drive module engineered for demanding industrial environments. As a service-ready original spare part, it is a critical component for maintenance engineers managing CNC machinery, packaging lines, printing presses, and multi-axis servo systems where unplanned downtime carries significant operational and financial risk. Whether you are executing a scheduled annual overhaul, responding to an emergency fault, or building a strategic spare parts inventory, the 6AU1390-0AA00-0AA1 delivers the compatibility, reliability, and long-term supply assurance your facility requires.

The 6AU1390-0AA00-0AA1 integrates SIMOTION motion control intelligence with SINAMICS drive functionality in a single compact module. Its ruggedized design — with extended temperature tolerance, vibration resistance, and conformal coating — makes it particularly suited for harsh-environment installations such as steel mills, foundries, outdoor enclosures, and marine or offshore control cabinets. For maintenance teams managing aging SIMOTION D platforms, sourcing a verified original replacement unit is the fastest path to restoring full servo axis performance without re-engineering the control architecture.

Spare Maintenance Table

Maintenance Planning for Continuous Operation

When replacing the 6AU1390-0AA00-0AA1 in a SIMOTION D control cabinet, a thorough site inspection of the surrounding electrical circuit is essential to prevent repeat failures and ensure a clean restoration of servo axis performance. Maintenance engineers should begin by verifying the 24 VDC control power supply — typically a SITOP PSU100S or equivalent Siemens SITOP power supply module — since voltage fluctuations or ripple are a common root cause of SIMOTION module faults. Inspect the DC link bus capacitors and the associated SINAMICS S120 power module (such as the 6SL3130 Active Line Module) for signs of aging or thermal stress before reinstalling the replacement drive.

The DRIVE-CLiQ communication cables connecting the 6AU1390-0AA00-0AA1 to motor encoder feedback units and to the Control Unit should be inspected for connector wear, cable shielding integrity, and correct seating. Damaged DRIVE-CLiQ cables are a frequent source of encoder communication faults that can be misdiagnosed as drive module failures. Similarly, the PROFIBUS DP or PROFINET IO network termination resistors and cable shielding at the cabinet entry point should be verified, as noise ingress on the fieldbus can cause intermittent axis faults on SIMOTION systems.

For multi-axis installations, check the adjacent SINAMICS S120 Motor Modules (booksize or chassis format, e.g. 6SL3120 series) for DC link voltage balance and thermal performance. If the system uses a SIMOTION D with an onboard CX32 Controller Extension, verify that the CX32 firmware version is compatible with the replacement 6AU1390-0AA00-0AA1 unit. Procurement engineers building a comprehensive spare parts kit for SIMOTION D platforms should also consider stocking the CF card (CompactFlash) containing the SIMOTION firmware and project data, terminal block connectors (e.g. Siemens SIMATIC S7 front connectors), and the relevant SINAMICS S120 Sensor Module Cabinet-Mounted (SMC) units for motor encoder interfacing. Fuse protection at the 24 VDC supply rail — using appropriate Siemens SENTRON 3NW or 5ST series fuse holders — should also be part of the annual inspection checklist for any cabinet housing SIMOTION D modules.

Site Replacement Workflow

Replacing the 6AU1390-0AA00-0AA1 on-site follows a structured sequence to minimize axis downtime and avoid configuration errors. Begin by backing up the SIMOTION project data from the CF card and documenting the current axis parameter set using SIMOTION SCOUT engineering software. Power down the cabinet following the site LOTO (Lockout/Tagout) procedure and discharge the DC link before disconnecting the module.

Remove the faulty 6AU1390-0AA00-0AA1 by releasing the DIN rail latch and disconnecting the DRIVE-CLiQ, PROFIBUS/PROFINET, 24 VDC supply, and I/O terminal connectors in sequence. Install the replacement unit, reconnect all cables in reverse order, and transfer the CF card containing the backed-up project data to the new module. On power-up, SIMOTION will automatically load the project and perform a drive topology scan. Verify axis enable signals, check the SINAMICS fault buffer for any residual alarms, and perform a controlled jog test on each servo axis before returning the machine to production.

This direct replacement approach preserves the existing control architecture, eliminates the need for re-commissioning from scratch, and typically restores full production capability within two to four hours of on-site work — significantly reducing the cost of unplanned downtime compared to waiting for OEM repair services.

Spare Parts Support FAQ

Q: Is the 6AU1390-0AA00-0AA1 a direct drop-in replacement for my existing SIMOTION D ruggedized unit?
A: Yes. The 6AU1390-0AA00-0AA1 is designed as a direct replacement within the SIMOTION D ruggedized platform. Provided the CF card with your project data is transferred to the replacement unit, no re-commissioning of axis parameters is required. Always confirm the hardware revision and firmware compatibility with your SIMOTION SCOUT project before installation.

Q: How is the unit tested before shipment?
A: Every 6AU1390-0AA00-0AA1 unit is functionally tested prior to dispatch. Testing covers power-on self-diagnostics, DRIVE-CLiQ interface verification, and communication port integrity. A test report is available upon request. Units are packed in anti-static ESD-safe packaging with shock-absorbing foam to protect against transit damage.

Q: What is the recommended spare parts inventory strategy for SIMOTION D installations?
A: For critical production lines, we recommend holding at least one 6AU1390-0AA00-0AA1 unit on-site as a hot spare, alongside a spare CF card with the latest project backup, a set of DRIVE-CLiQ cables, and the relevant SINAMICS S120 Motor Module for each axis type in the system. This inventory strategy supports a target restoration time of under four hours for any single-axis failure.

Q: What warranty and long-term supply support is available?
A: All units are covered by a 12-month warranty against manufacturing defects and functional failure under normal operating conditions. NINERMAS maintains ongoing sourcing relationships to support long-term supply of end-of-life and discontinued Siemens SIMOTION components, providing procurement engineers with a reliable alternative to OEM lead times that can extend to 20–40 weeks for legacy modules.