Siemens 6SE7038-6EK84-1GG0 MASTERDRIVES Upgrade Solution

Product Overview

Siemens 6SE7038-6EK84-1GG0 MASTERDRIVES Upgrade Solution: Smooth Transition from Legacy Drive Systems

The Siemens 6SE7038-6EK84-1GG0 is a high-power AC Drive Output Module from the SIMOVERT MASTERDRIVES MC/VC series — one of Siemens’ most widely deployed variable-speed drive platforms in heavy industrial environments. As the MASTERDRIVES product line has reached end-of-life status, many facilities operating legacy 6SE70 series drive cabinets are now facing the critical challenge of sourcing verified replacement units or planning a structured migration to current-generation drive technology.

TOPNLMS supplies the 6SE7038-6EK84-1GG0 as a direct replacement module, fully tested and ready to install into existing MASTERDRIVES cabinet configurations. Whether your priority is an emergency swap to restore production or a phased modernization of your drive infrastructure, this module provides the compatibility and reliability your operation demands.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful MASTERDRIVES modernization rarely involves a single component. In practice, engineers replacing the 6SE7038-6EK84-1GG0 output module typically work alongside several other system elements that must be verified or simultaneously upgraded to ensure stable operation.

The CUVC control unit (e.g., 6SE7090-0XX84-0AB0) is the most common companion board in MASTERDRIVES VC configurations. If the CUVC shows parameter corruption or hardware faults, replacing it in tandem with the output module eliminates ambiguity during commissioning. Similarly, the CUMC motion control board used in MASTERDRIVES MC servo applications should be inspected for firmware compatibility when the output module is swapped.

The rectifier / infeed unit — often a 6SE7036 or 6SE7031 series Active Front End or diode rectifier — feeds the DC bus that powers the 6SE7038-6EK84-1GG0. Verifying that the infeed unit’s DC link voltage is within specification before energizing the replacement output module is a mandatory commissioning step. In multi-axis cabinet configurations, the DC bus capacitor module and braking resistor unit (6SE7038 series) should also be inspected for aging or thermal damage.

On the signal side, the SIMOLINK fiber-optic ring connecting the CUVC to the output module’s gate driver board must be intact. Replacement fiber-optic cables and the associated SLB (SIMOLINK Board) are available as separate line items and are frequently required when the original harness has been damaged by heat or mechanical stress over years of operation.

For facilities integrating the drive into a SIMATIC S7 PLC network, the PROFIBUS-DP communication module (CBP2, 6SE7090-0XX84-0FF5) provides the fieldbus interface. If the existing CBP2 is suspected of causing intermittent communication faults, replacing it alongside the output module ensures a clean baseline for re-commissioning. Facilities running older S5 controllers may also require a CP5431 or CP5412 PROFIBUS master card to maintain network integrity during the transition.

Where the drive feeds a high-inertia load such as a centrifuge, compressor, or large pump, the output reactor (du/dt filter, e.g., 4EP3 series) between the inverter output terminals and the motor should be checked for insulation degradation. A failed output reactor can cause premature IGBT failure in a newly installed output module, so replacement is strongly recommended as a precautionary measure during any major drive overhaul.

Finally, for facilities that rely on the OP1S operator panel or the PMU parameterization unit for local drive control and diagnostics, ensuring these HMI components are functional before commissioning the replacement module will significantly reduce on-site troubleshooting time.

Retrofit Guidance FAQ

Q: Can I reuse my existing motor wiring when installing the 6SE7038-6EK84-1GG0?
A: Yes. The output terminals (U2, V2, W2) and PE connection points are physically identical to the original module. No rewiring of the motor cable is required, provided the cable insulation and terminations are in good condition.

Q: Do I need to re-enter all drive parameters after replacement?
A: Not necessarily. If the CUVC or CUMC control board is retained and its EEPROM is intact, the existing parameter set (P-numbers) will be preserved. We recommend uploading a parameter backup via DriveMonitor before removing the old module as a precaution.

Q: Is the 6SE7038-6EK84-1GG0 compatible with PROFIBUS-DP networks?
A: Yes. PROFIBUS-DP communication is handled by the CBP2 communication board on the CUVC, not the output module itself. The output module replacement has no impact on PROFIBUS configuration or GSD file settings.

Q: Will the replacement module fit in my existing cabinet without mechanical modification?
A: The 6SE7038-6EK84-1GG0 uses the standard MASTERDRIVES chassis frame. It mounts to the same rail and bus bar positions as the original unit. No cabinet cutting, drilling, or busbar relocation is required.

Q: How do I verify the replacement module is functioning correctly before full load commissioning?
A: After installation, perform a no-load test by enabling the drive with the motor disconnected and verifying DC bus voltage, gate driver feedback signals, and temperature sensor readings via DriveMonitor. Then reconnect the motor and perform a low-speed ramp test before returning to full production speed.

Q: What if my system uses USS protocol instead of PROFIBUS?
A: USS protocol is implemented at the CUVC firmware level and is unaffected by the output module replacement. Your existing USS telegram configuration and baud rate settings remain valid.

Warranty Assurance

Every 6SE7038-6EK84-1GG0 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each module undergoes a multi-point functional inspection including DC bus insulation resistance testing, gate driver signal verification, and thermal interface inspection. Units that do not meet our outgoing quality standards are quarantined and not offered for sale.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our after-sales response target is 24 hours for initial fault assessment and 72 hours for replacement dispatch on confirmed warranty cases. We maintain buffer stock of high-demand MASTERDRIVES components specifically to support rapid warranty fulfillment without extended lead times.

For procurement teams requiring documentation, we can provide a test report, packing list, and commercial invoice with each shipment. Export from Xiamen, China is available via DHL Express, FedEx International Priority, or sea freight consolidation depending on order volume and urgency.

Contact our technical sales team before placing your order if you require confirmation of compatibility with a specific cabinet configuration, firmware version, or system architecture. We are experienced in MASTERDRIVES retrofit projects and can advise on the full bill of materials required for a successful migration.