Siemens 6SE7021-8EB84-1HF3 PEU Output Power Unit
A SIMOVERT MASTERDRIVES PEU output power unit for the documented 17.5 A, three-phase 380–460 V AC equipment class.
Product Profile
6SE7021-8EB84-1HF3 is a Siemens SIMOVERT MASTERDRIVES output power unit identified as a PEU assembly for the documented 17.5 A equipment class.
The unit belongs to the converter power section, so the complete MLFB, installed drive configuration, option state, cooling arrangement and connector set must be matched before exchange.
Legacy MASTERDRIVES service work requires a controlled isolation, DC-link discharge and recommissioning plan rather than a board-only swap.
Technical Data
| Manufacturer | Siemens |
|---|---|
| Exact order number | 6SE7021-8EB84-1HF3 |
| Product family | SIMOVERT MASTERDRIVES |
| Product type | PEU output power unit |
| Documented current class | 17.5 A |
| Documented input class | Three-phase 380 to 460 VAC |
| Frequency class | 50 / 60 Hz |
| Installation role | Converter output power section |
| Selection basis | Complete MLFB, options, hardware revision and host configuration |
System Role
Provides the output power stage within the matched MASTERDRIVES converter.
Connects the controlled DC-link energy to the motor-side power path.
Works with the installed control, gate-drive, current-feedback and cooling architecture.
Forms part of a high-energy assembly requiring qualified drive-service procedures.
Compatibility
- Match the full 6SE order number, including every suffix and option.
- Confirm the host configuration, current class, supply class and cooling path.
- Record power, gate and feedback connectors before removal.
- Do not use a PEU from another current or voltage class without Siemens approval.
Applications
- Like-for-like restoration of a documented SIMOVERT MASTERDRIVES converter.
- Legacy drive maintenance where the original PEU identity is preserved.
- Tested-spare planning for a matched 17.5 A power-section configuration.
FAQ
Q01What must be checked before ordering 6SE7021-8EB84-1HF3?+
Confirm the complete drive MLFB, option suffixes, power section, current and voltage class, cooling arrangement, connector layout and hardware revision.
Q02Can another 6SE7021 PEU replace 6SE7021-8EB84-1HF3?+
Do not select by the shared prefix. Output class, supply class, hardware, options and connector assignment must match.
Q03What safety step is critical before removing 6SE7021-8EB84-1HF3?+
Isolate every energy source and follow the Siemens DC-link discharge and verification procedure before touching the power section.
Q04What condition evidence is useful for 6SE7021-8EB84-1HF3?+
Request clear labels, connector and busbar inspection, insulation results, cooling-path condition and a traceable functional test.
Q05What commissioning follows a 6SE7021-8EB84-1HF3 exchange?+
Verify insulation, phase connections, gate and feedback paths, cooling, diagnostics, motor direction and a controlled load test.
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