Siemens 6SE7028-6EC85-1HA0 PER1 Control Unit
The PER1 control unit for design-C infeed and regenerative-feedback units.
Product Profile
6SE7028-6EC85-1HA0 is a Siemens SIMOVERT MASTERDRIVES PER1 control unit for design-C infeed and regenerative-feedback units. Siemens identifies the host class as 380–480 V three-phase AC at 50/60 Hz.
The service unit must match the front-end assembly, power section, parameter set and connectors. Siemens points to low-voltage SINAMICS as the broader migration direction.
Technical Data
| Manufacturer | Siemens |
|---|---|
| Exact Model | 6SE7028-6EC85-1HA0 |
| Family | SIMOVERT MASTERDRIVES |
| Product Type | PER1 control unit |
| Host Function | Infeed and regenerative-feedback unit |
| Host Design | Design C |
| Supply Class | 380–480 V three-phase AC |
| Frequency | 50/60 Hz |
| Lifecycle | Spare-part product |
| Migration Direction | Low-voltage SINAMICS |
System Role
Controls the documented design-C line infeed or regenerative power section.
Manages front-end operation and diagnostics.
Keeps PER1 hardware, host power section and parameter record together.
Supports service while an engineered migration is evaluated.
Compatibility
- Confirm the complete front-end MLFB and design-C construction.
- Match voltage class, connectors, control hardware and options.
- Preserve parameters, software or memory identity and fault history.
- Test precharge, synchronization, DC-link regulation, regeneration and protection.
Applications
- Legacy MASTERDRIVES infeed and regenerative front-end control.
- Service replacement in a verified design-C unit.
- Obsolescence planning toward SINAMICS architecture.
FAQ
Which host label is needed to source 6SE7028-6EC85-1HA0?
Provide the complete unit MLFB, rating plate, design size, PER1 label and connectors.
Can 6SE7028-6EC85-1HA0 be used in a different construction size?
Not without an explicit Siemens cross-reference.
What must be backed up before replacing 6SE7028-6EC85-1HA0?
Save parameters, options, memory identity, front-end settings and diagnostics.
What should be tested after fitting 6SE7028-6EC85-1HA0?
Verify precharge, line synchronization, DC-link regulation, regeneration and protection.
What is needed for migration from 6SE7028-6EC85-1HA0?
Document mains, DC link, connected drives, duty, harmonics, controls and safety.
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