SIEMENS 6RA7025-6DS22-0 — Fully Regenerative 4-Quadrant DC Drive Converter | SIMOREG DC Master Platform
Engineering Background: The SIMOREG DC Master series represents Siemens’ flagship generation of fully digital DC drive converters, engineered for demanding industrial applications where precise speed and torque control of DC motors is mission-critical. The 6RA7025-6DS22-0 is a 4-quadrant (fully regenerative) unit rated for 3-phase AC input at 400 V, delivering up to 30 A DC armature current — suitable for drives in the 7.5–15 kW power range.
Product Positioning: Designed for procurement engineers sourcing replacement or new-build DC drive solutions in steel mills, paper machines, extruders, winding/unwinding systems, and test bench applications. The SIMOREG DC Master platform offers closed-loop digital control with PROFIBUS-DP fieldbus integration, making it a direct fit for Siemens SIMATIC S7 and TIA Portal automation architectures.
Complete Technical Specifications
- Part Number / SKU: 6RA7025-6DS22-0
- Series / Platform: SIMOREG DC Master (6RA70 Series)
- Drive Type: 4-Quadrant Fully Regenerative DC Converter
- Armature Supply Voltage: 3 AC 400 V (±15%), 50/60 Hz
- Rated Armature DC Current: 30 A
- Rated Armature DC Voltage: Up to 420 V DC
- Field Supply Voltage: 1 AC 400 V
- Rated Field Current: 15 A
- Power Range: 7.5–15 kW (motor dependent)
- Control Method: Fully digital, closed-loop (speed & torque)
- Fieldbus Interface: PROFIBUS-DP (integrated, via option board)
- Degree of Protection: IP00 (chassis unit, requires enclosure)
- Cooling Method: Forced air cooling (internal fan)
- Ambient Operating Temperature: 0 °C to +40 °C
- Storage Temperature: −25 °C to +70 °C
- Relative Humidity: ≤ 95% (non-condensing)
- Product Weight: ~15 kg
- Country of Origin: Germany
- HS Code: 8504.40.19
Proven Application Environments
- Steel rolling mills and coiler/decoiler drives
- Paper and board machine section drives
- Extruder and injection molding machine drives
- Winding, unwinding, and tension-control systems
- Test bench and dynamometer applications
- Crane and hoist regenerative braking systems
- Retrofit of legacy DC motor installations
Engineering Advantages
- 4-Quadrant Operation: Full motoring and regenerative braking in both directions — eliminates braking resistors and recovers energy to the supply grid.
- Fully Digital Control: Microprocessor-based closed-loop speed and torque regulation with auto-tuning; eliminates analog drift and simplifies commissioning.
- PROFIBUS-DP Integration: Native fieldbus connectivity for seamless integration with SIMATIC S7-300/400/1500 PLCs and TIA Portal projects.
- Modular Option Board Architecture: Supports technology function boards (T400), encoder boards, and additional I/O expansion.
- Proven Long-Term Availability: Siemens SIMOREG DC Master units remain widely supported with spare parts and firmware updates, protecting long-term investment.
- Compact Chassis Design: IP00 chassis format allows integration into custom enclosures optimized for specific installation environments.
System Architecture & Signal Flow
The 6RA7025-6DS22-0 operates as a fully controlled 3-phase thyristor bridge (B6C circuit) for the armature circuit, with a separate single-phase thyristor bridge for field excitation. The digital control board (CUD) executes the speed and current control loops at high sampling rates. Setpoints and process data are exchanged via PROFIBUS-DP or analog/digital I/O terminals. The unit interfaces directly with a DC motor’s armature and field windings; no intermediate DC bus or inverter stage is required.
Typical signal flow: PLC setpoint → PROFIBUS-DP → CUD control board → thyristor firing → DC motor armature → encoder/tachometer feedback → CUD closed-loop correction.
Sourcing & Quality Verification
- Units sourced from authorized industrial distributors and verified OEM channels.
- Each unit undergoes visual inspection, label/nameplate verification, and functional pre-shipment checks.
- Serial number and firmware version documented and provided with shipment.
- Original Siemens packaging preserved where available; professional repackaging applied where required.
- Certificate of conformity and test records available on request.
Procurement Process
- Confirm Part Number: Verify 6RA7025-6DS22-0 against your BOM or existing drive nameplate.
- Request Quote: Contact support@konmask.com for volume pricing, lead time, and availability confirmation.
- Place Order: Purchase online or via PO — we support standard B2B procurement workflows including NET payment terms for qualified accounts.
- Shipping & Documentation: Global shipping with full commercial invoice, packing list, and HS code documentation for customs clearance.
- After-Sales Support: Technical support available for installation, commissioning, and parameter configuration queries.
Technical FAQ
Q: Is the 6RA7025-6DS22-0 a 2-quadrant or 4-quadrant unit?
A: 4-quadrant (fully regenerative). The suffix “-6DS22-0” denotes the dual antiparallel thyristor bridge configuration enabling regenerative braking and reverse motoring.
Q: What DC motor power range is this drive suitable for?
A: Typically 7.5–15 kW at 400 V AC supply, depending on motor armature voltage and rated current. Consult the motor nameplate and Siemens SIMOREG sizing tool for exact matching.
Q: Does this unit include a PROFIBUS-DP interface?
A: PROFIBUS-DP is supported via the integrated option slot on the CUD board. Confirm the specific option board (e.g., CBP2) is fitted or order separately if required.
Q: Can this drive replace an older 6RA24 or 6RA26 series unit?
A: In most cases yes, with appropriate parameter migration and possible terminal adapter wiring. Contact our technical team for a compatibility assessment.
Q: What is the lead time for this part?
A: In-stock units ship within 1–3 business days. Out-of-stock lead times vary; contact us for current availability.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
