Variable Speed Drive Solution – Siemens 6SE7021-3TP50-Z | SIMOVERT Compact Plus
Where This Product Is Used
The Siemens 6SE7021-3TP50-Z is a 5.5 kW AC frequency inverter from the SIMOVERT MASTERDRIVES Compact Plus series, engineered for demanding industrial motion-control applications. Engineers specify this drive across a wide range of sectors:
- Pump & Fan Control – Water treatment plants, HVAC systems, and cooling towers rely on this drive for precise flow regulation and energy savings up to 50% vs. throttle-valve control.
- Conveyor & Material Handling – Automotive assembly lines, logistics sortation systems, and packaging conveyors use the 6SE7021-3TP50-Z for smooth start/stop and accurate speed profiling.
- Machine Tool & CNC Spindle Drives – Its vector-control capability delivers the torque accuracy required for milling, grinding, and turning spindle applications.
- Compressor & Blower Drives – Oil & gas and chemical plants deploy this inverter to match compressor output to real-time process demand.
- Crane & Hoist Applications – The integrated brake chopper interface and safe-stop functionality make it suitable for overhead crane duty cycles.
- Textile & Paper Machinery – Tension-control and winding applications benefit from the drive’s high dynamic response and fieldbus connectivity.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 6SE7021-3TP50-Z |
| Series | SIMOVERT MASTERDRIVES Compact Plus |
| Rated Output Power | 5.5 kW (7.5 HP) |
| Input Voltage | 3-phase AC 380–480 V ±10% |
| Output Frequency Range | 0–300 Hz |
| Control Mode | V/f, Sensorless Vector, Closed-Loop Vector |
| Rated Output Current | 13.2 A |
| Protection Class | IP20 |
| Cooling Method | Forced air (internal fan) |
| Communication Interface | PROFIBUS DP (via CB board option) |
| Country of Origin | Germany |
| HS Code | 8504.40 |
| Weight | 14.5 kg |
Why Engineers Specify This Model
- Compact Footprint – The Compact Plus housing reduces panel space by up to 30% compared to standard SIMOVERT chassis units, critical in retrofit projects.
- Integrated Brake Chopper – Eliminates the need for an external braking module in most 5.5 kW applications, reducing BOM cost and wiring complexity.
- Modular Option Boards – Supports encoder feedback, PROFIBUS DP, DeviceNet, and I/O expansion boards without changing the base unit.
- Proven Reliability – SIMOVERT MASTERDRIVES has an installed base of millions of units across global industries since the 1990s, with long-term spare-parts availability.
- Seamless SIMATIC Integration – Native PROFIBUS DP communication enables direct integration with Siemens S7-300/S7-400/S7-1500 PLC systems via STARTER or SCOUT commissioning tools.
Complete System Bill of Materials
For a fully operational drive system based on the 6SE7021-3TP50-Z, engineers typically specify the following companion components:
- Line filter: 6SE7021-3TP50-Z (base unit, this product)
- Input line reactor: 4EP3600-8US (recommended for long cable runs)
- Output dV/dt filter: 6SE7021-8ES87-2DA0
- PROFIBUS DP option board: 6SE7090-0XX84-0FF5
- Operator panel (PMU): 6SE7090-0XX84-2FK0
- Braking resistor (external): 6SE7021-3TP50-Z compatible 100 Ω / 100 W unit
- Siemens S7-1500 PLC host controller: 6ES7515-2AM02-0AB0
Compliance & Industry Standards
- CE Marked – EU Low Voltage Directive 2014/35/EU & EMC Directive 2014/30/EU
- UL Listed – UL 508C (Power Conversion Equipment)
- IEC 61800-3 – Adjustable Speed Electrical Power Drive Systems
- IEC 61800-5-1 – Safety requirements for adjustable speed drive systems
- RoHS Compliant
Quality Assurance & Sourcing
Every unit offered by Konmask.com undergoes a structured inspection process before dispatch:
- Visual inspection of housing, terminals, and nameplate data
- Functional power-on test with load simulation where applicable
- Firmware version verification against Siemens release notes
- Original manufacturer packaging or professional anti-static repackaging
- Traceability documentation available on request (batch/lot records)
We source from authorized distributors, certified surplus channels, and direct OEM partnerships to ensure authenticity and supply continuity.
How to Source This Part
- Click Add to Cart or use the Request a Quote button for volume pricing.
- For urgent requirements, contact us directly at support@konmask.com or call +0086 19859288691.
- Lead time: In-stock units ship within 1–3 business days. Ex-stock orders confirmed within 24 hours.
- Export documentation (CO, packing list, commercial invoice) provided for international shipments.
Application-Specific FAQ
Q: Can the 6SE7021-3TP50-Z be used with a Siemens S7-1200 PLC?
A: Yes, via PROFIBUS DP with the appropriate CB option board. For PROFINET connectivity, consider upgrading to the SINAMICS G120 series.
Q: Is an external braking resistor required for pump applications?
A: For standard centrifugal pump duty (low regenerative energy), the internal brake chopper is typically sufficient. High-inertia loads may require an external resistor.
Q: What is the difference between the 6SE7021-3TP50 and 6SE7021-3TP50-Z?
A: The “-Z” suffix denotes a factory-configured option package. Verify the specific option codes with your Siemens order documentation or contact Konmask for clarification.
Q: Can this drive operate in a high-ambient-temperature environment?
A: The standard rating is 40°C ambient. Derating applies above 40°C; consult the SIMOVERT MASTERDRIVES Compact Plus operating manual (Siemens document A5E00125122).
Q: Do you provide a warranty?
A: Yes. Konmask offers a 12-month warranty on all tested units. Terms available on request.
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Contact: support@konmask.com | +0086 19859288691
