Siemens 6SL3210-1KE21-7UP1 SINAMICS G120C Converter
An unfiltered FSB compact converter with PROFIBUS DP, external 24 V supply and integrated Safe Torque Off.
Overview
6SL3210-1KE21-7UP1 expands the SINAMICS G120C platform into the FSB enclosure for higher motor current. It serves three-phase 400 V-class machines that use PROFIBUS DP and provide their own EMC solution.
The UP1 suffix identifies the unfiltered PROFIBUS configuration. This distinction matters in replacement work because a matching power rating alone does not establish equivalent network or EMC behavior.
Specs
| Manufacturer | Siemens |
|---|---|
| Article Number | 6SL3210-1KE21-7UP1 |
| Product Family | SINAMICS G120C |
| Input Supply | 3 AC 380–480 V, +10 / -20%, 47–63 Hz |
| Rated Power, Low Overload | 7.5 kW |
| Rated Power, High Overload | 5.5 kW |
| EMC Filter | Unfiltered |
| Control Supply | External 24 V |
| Standard I/O | 6 DI, 2 DO, 1 AI, 1 AO, 1 motor-temperature input |
| Fail-Safe Input | 1 |
| Safety Function | Safe Torque Off integrated |
| Fieldbus | PROFIBUS DP |
| Protection | IP20 / UL open type |
| Frame / Dimensions | FSB; 196 × 100 × 203 mm (H × W × D) |
| Cooling | Integrated fan; 0.009 m³/s airflow |
| Operating Temperature | -10 to +40 °C |
| Efficiency Class | IE2 |
Features
- The FSB frame provides the thermal and connection capacity required by this power class while retaining the G120C compact architecture.
- PROFIBUS DP supports cyclic command and status exchange with compatible Siemens and third-party masters.
- Both hardwired and networked control strategies can use the integrated standard I/O.
- Supported control methods include parameterizable V/f modes and sensorless vector control.
- A DC-link connection is available for the documented braking-resistor arrangement.
Applications
- Medium-size conveyors, process pumps, fans and mixers controlled over PROFIBUS.
- OEM equipment with an engineered external EMC-filter and cabinet-bonding solution.
- Drive replacements where FSB dimensions and cooling airflow have been verified.
- Automation cells combining a fail-safe input with conventional drive I/O.
Lifecycle
- Use the complete 6SL3210-1KE21-7UP1 article number for spares and parameter records.
- An unfiltered drive may require additional line-side measures to meet the installation EMC target.
- The installed motor cable, protective device and braking components must be checked against Siemens selection data.
- Maintain a recoverable parameter backup and document the PROFIBUS node configuration.
FAQ
What does the U in this configuration signify for selection?
It identifies the unfiltered variant, so the cabinet EMC concept must provide the necessary external measures.
Which duty rating should be matched?
Use the rating that corresponds to the real overload cycle, not only the motor nameplate power.
Does this version use PROFIBUS DP?
Yes. PROFIBUS DP is the integrated fieldbus.
Can it replace an FSA unit without checking space?
No. This article uses the wider FSB frame and its cooling requirements must be accommodated.
Is a motor-temperature channel provided?
Yes. The standard interface includes a supported motor-temperature sensor input.
What commissioning records are most useful?
Keep the parameter set, motor data, node address, telegram assignment, safety test and EMC arrangement.
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