Siemens 6SE7090-0XX84-0AB0 CUVC Board – Tested Spare Part

What Is the Siemens 6SE7090-0XX84-0AB0 CUVC Main Control Board?

The Siemens 6SE7090-0XX84-0AB0 CUVC main control board is the closed-loop and open-loop vector control module for SIMOVERT MASTERDRIVES. Identified by the CUVC designation and firmware version V3.4, it sits at the junction between the parameter set and the motor feedback chain, managing vector control, I/O signal handling, and serial communication within the drive-4. Supplied as a tested replacement unit, it allows maintenance teams to restore a MASTERDRIVES drive without replacing the entire power section.

Technical Specifications

Important Compatibility Note: The CUVC board is specific to the SIMOVERT MASTERDRIVES platform. The 6SE7090-0XX84-0AB0 is the standard CUVC version without an integrated PROFIBUS-DP interface; PROFIBUS communication on this platform typically requires an additional CBP/CBP2 sub-module. Confirm the existing board’s suffix and sub-module arrangement before ordering.

When to Replace the 6SE7090-0XX84-0AB0 CUVC Board

Because this module is discontinued by Siemens, sourcing a tested replacement is often the fastest path to getting a MASTERDRIVES drive back online. Typical symptoms that point to CUVC-related issues include:

• F008 / F081 faults on power-up after a long shutdown — reported on MASTERDRIVES systems with the CUVC 6SE7090-0XX84-0AB0, sometimes requiring a PMU-level reset rather than a standard operator-panel reset-19.
• F011 fault with erratic motor direction on start — described in field reports involving the same CUVC part number–.
• F117 fault that is not resettable, including after restoring factory settings — reported on CUVC-based MASTERDRIVES configurations–.
• Loss of communication / control response between the CUVC and power section, or abnormal analog/digital I/O behavior.

These fault codes are diagnostic reference points, not a replacement guarantee. Confirm the drive’s parameter set and power section condition before concluding the CUVC is the root cause.

Condition & Quality Inspection

Each unit is inspected and verified before dispatch:

• Board part number and revision markings checked against 6SE7090-0XX84-0AB0;
• Firmware identity reviewed where applicable (V3.4 baseline);
• Visual inspection of connector pins, terminal strips, and board surface;
• Photographic record available on request before shipping.

Ordering & Compatibility Verification

Before ordering, confirm the following:

• Drive nameplate MLFB — the full order number of the MASTERDRIVES unit, not only the power rating.
• Original CUVC label — confirm the board reads 6SE7090-0XX84-0AB0 and note the firmware/revision marking.
• Sub-module arrangement — check whether a CBP/CBP2 communication module is present, as this affects replacement planning.
• If any point is unclear, send a photo of the drive nameplate and the original CUVC label for review before purchase.

Frequently Asked Questions

Is the 6SE7090-0XX84-0AB0 compatible with all SIMOVERT MASTERDRIVES units?

No. It is the CUVC vector control module for the MASTERDRIVES platform, but compatibility depends on the specific drive model, power section, and existing sub-modules. Nameplate and label verification is required.

Is this CUVC board new, refurbished, or obsolete?

Siemens has classified this module as discontinued/obsolete. We supply tested replacement units; the exact condition (original pulled / refurbished) is confirmed per unit before dispatch.

Does this CUVC version include PROFIBUS-DP?

The 6SE7090-0XX84-0AB0 is the standard CUVC version without integrated PROFIBUS-DP. PROFIBUS communication typically requires an additional CBP/CBP2 sub-module. Confirm the suffix of your existing board before ordering.

What is the typical lead time?

Lead time depends on current stock. Contact us with the required quantity for the most accurate dispatch timeline.