Bosch Rexroth RD52.1-4B-011-L-NN-NN-NN-FW Compact Servo Drive – IndraDrive Cs Series
When a servo axis loses its drive controller on the production floor, the entire machine comes to a standstill. Conveyor lines stop, robotic arms freeze mid-cycle, and every minute of unplanned downtime translates directly into lost output and missed delivery commitments. The Bosch Rexroth RD52.1-4B-011-L-NN-NN-NN-FW is the precision drive controller engineered to prevent exactly that scenario — delivering reliable, high-dynamic motion control that keeps your automation running without interruption.
Within the IndraDrive Cs (Compact Single-axis) family, the RD52.1-4B-011-L-NN-NN-NN-FW occupies the entry-to-mid power segment, rated for a continuous output current of 11 A with a 400 V AC three-phase supply. The RD52.1 platform is one of Bosch Rexroth’s most widely deployed compact drive solutions globally, recognized for its integrated safety functions, flexible fieldbus connectivity, and deterministic real-time performance — making it a benchmark product in the IEC 61800-compliant servo drive market.
Technical Specifications
- Part Number: RD52.1-4B-011-L-NN-NN-NN-FW
- Series: IndraDrive Cs (Compact Single-axis)
- Manufacturer: Bosch Rexroth
- Supply Voltage: 3 × 400 V AC (±10%), 50/60 Hz
- Continuous Output Current: 11 A
- Power Class: 4B (medium compact class)
- Cooling Method: L = Liquid cooling
- Communication Interface: SERCOS III / PROFINET (firmware-dependent)
- Safety Function: STO (Safe Torque Off) — SIL 2 / PLd compliant
- Firmware: FW (standard firmware variant)
- Protection Class: IP20 (cabinet installation)
- Operating Temperature: 0 °C to +40 °C (derating above 40 °C)
- Standards: CE, UL, IEC 61800-5-1, EN ISO 13849
Key Features & Benefits
- Integrated STO Safety: Safe Torque Off function certified to SIL 2 / PLd eliminates the need for external safety contactors, reducing panel space and wiring complexity.
- Liquid Cooling Design: The “L” cooling variant enables high power density in thermally constrained cabinets, ideal for compact machine designs.
- High Dynamic Response: IndraDrive Cs delivers fast current loop cycle times, enabling precise torque and velocity control for demanding motion profiles.
- Flexible Fieldbus Support: Compatible with SERCOS III, PROFINET, EtherCAT, and CANopen depending on firmware and option card configuration.
- Scalable Drive Family: Shares firmware, tooling (IndraWorks), and parameter structure with the full IndraDrive M/Mi range, simplifying multi-axis commissioning.
- Compact Footprint: Single-axis design minimizes cabinet real estate while maintaining full servo performance.
- Diagnostic Transparency: Integrated web server and status LEDs provide real-time diagnostics without additional hardware.
Industry & Equipment Applications
- Packaging Machinery: High-speed pick-and-place, form-fill-seal, and cartoning lines requiring precise multi-axis synchronization.
- Printing & Converting: Register control, tension management, and web guiding in offset and flexographic presses.
- Semiconductor & Electronics Manufacturing: SMT placement machines, wafer handling, and precision dispensing systems.
- Plastics & Injection Molding: Servo-driven clamping, injection, and ejection axes on all-electric molding machines.
- Robotics & Handling: Articulated robot joint drives and linear gantry axes in automotive assembly.
- Machine Tools: Feed axis and spindle orientation control on CNC machining centers.
System Integration & Compatible Parts
The RD52.1-4B-011-L-NN-NN-NN-FW is designed to integrate seamlessly within the Bosch Rexroth IndraDrive ecosystem. Typical compatible components include:
- Motors: Rexroth IndraDyn S (MSK), IndraDyn T (MKE), and IndraDyn H (MAD/MAF) servo motors
- Controllers: Rexroth IndraMotion MLC / MLD motion logic controllers
- Supply Units: Rexroth HMV01 / HMV02 regenerative power supply modules
- Cables & Connectors: Rexroth IndraDyn motor power and encoder cables (IKS/IKG series)
- Engineering Software: IndraWorks Engineering (IW-E) for parameterization and commissioning
Please contact our technical team to confirm compatibility with your specific motor and controller configuration before ordering.
Our Quality Assurance Process
At Konmask.com, every unit undergoes a rigorous multi-stage inspection before shipment:
- Authenticity Verification: Part number, date code, and manufacturer markings are cross-checked against Bosch Rexroth documentation.
- Visual & Mechanical Inspection: Connectors, housing, PCB (where accessible), and labels are inspected for damage, corrosion, or tampering.
- Functional Pre-test: Where applicable, drives are powered up and basic communication/status checks are performed.
- Secure Packaging: Anti-static bags, foam cushioning, and moisture-barrier packaging protect units during international transit.
- Documentation: Each shipment includes a packing list and inspection report; original Rexroth documentation is included where available.
How to Order
- Submit an inquiry via the “Request a Quote” button on this page, or email support@konmask.com.
- Provide your required quantity, delivery timeline, and destination country.
- Our team will respond within 24 business hours with availability, lead time, and a formal quotation.
- Upon order confirmation, we arrange secure packaging and international freight (DHL / FedEx / sea freight as required).
- Tracking information and shipping documents (commercial invoice, packing list) are provided upon dispatch.
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation: Focused exclusively on PLC, DCS, servo drives, and motion control components from leading global brands.
- ✅ Verified Sourcing: Parts are sourced from authorized channels and reputable industrial distributors worldwide.
- ✅ Global Shipping: We ship to 80+ countries with full export documentation support.
- ✅ Technical Support: Our engineering team can assist with cross-referencing, compatibility checks, and application guidance.
- ✅ Responsive Service: Dedicated account managers ensure fast quotation turnaround and order tracking.
- ✅ Competitive Pricing: Direct sourcing relationships allow us to offer market-competitive pricing on both new and refurbished units.
Frequently Asked Questions
Q: Is the RD52.1-4B-011-L-NN-NN-NN-FW a new or refurbished unit?
A: We stock both new (original packaging) and professionally refurbished units. Please specify your preference when submitting your inquiry, and we will confirm availability and pricing accordingly.
Q: What is the lead time for this part?
A: Lead time depends on current stock levels. In-stock units typically ship within 3–5 business days. For out-of-stock items, lead time is 2–6 weeks depending on sourcing. Contact us for real-time availability.
Q: Can you provide a warranty?
A: Yes. We offer a standard 12-month warranty against manufacturing defects on new units, and a 6-month warranty on refurbished units. Terms are detailed in our warranty policy.
Q: Do you support export to my country?
A: We export to over 80 countries. Please contact us with your destination to confirm shipping options, duties, and documentation requirements.
Q: Can I get technical support for commissioning this drive?
A: Our technical team can provide guidance on parameter settings, fieldbus configuration, and motor matching. For complex commissioning, we recommend engaging a certified Rexroth service partner in your region.
Q: What is the difference between the RD52.1 and HCS02 / HCS03 drives?
A: The RD52.1 (IndraDrive Cs) is a compact single-axis drive optimized for space-constrained applications. The HCS02/HCS03 (IndraDrive C) are higher-power, cabinet-mount drives suited for larger axis power requirements. Both share the IndraDrive firmware and tooling ecosystem.
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