Description
Operating Mechanism and System Value
The drive functions as a high-performance single-axis converter with integrated motion logic and certified SafeMotion functionality. It converts DC-bus energy via ultra-fast IGBT PWM into torque-precise three-phase currents while simultaneously evaluating two independent encoder systems for closed-loop redundancy or master-slave applications. The embedded SafeMotion module executes complex safety functions (SLS, SLP, SSM, SOS, etc.) directly in the drive, eliminating external safety controllers and reducing wiring by up to 70 %. Multi-Ethernet topology enables seamless integration into any fieldbus ecosystem without hardware changes, dramatically lowering spare-parts diversity across global plants and extending asset value throughout the entire machine lifecycle.
Downtime Risks and Failure Prediction
- Failure of the SafeMotion module can trigger immediate line shutdown by higher-level safety PLCs, causing multi-hour or multi-shift production losses.
- Non-original firmware updates in refurbished units often corrupt safety certificates, forcing expensive re-certification or complete machine standstill during audits.
- Premature IGBT degradation in grey-market drives frequently leads to catastrophic short-circuits, damaging connected motors and requiring full axis replacement.
Core Competitiveness Analysis
This 54 A variant achieves exceptional power density (36 kVA in only 100 × 325 × 215 mm) through advanced cold-plate design and latest-generation trench-field-stop IGBTs with integrated overtemperature and short-circuit monitoring. Dual-encoder evaluation on a single ASIC guarantees sub-micron precision even in gantry or electronic gearbox applications. The integrated SafeMotion technology complies with IEC 61800-5-2 and EN ISO 13849-1 PL e / SIL 3 without external modules, providing legally binding functional safety that counterfeit or repaired units cannot replicate. Rexroth’s 10-year long-term availability commitment for the entire HCS01 platform protects residual asset value far beyond typical obsolescence cycles. Real-world MTBF routinely exceeds 1.2 million hours under rated load, driven by rigorous component derating and extensive environmental stress screening during manufacturing. These characteristics position the R911370133 as the reference solution for high-throughput, safety-critical applications in packaging, printing, and metal-forming industries.
Applicable Environments and Operating Conditions Analysis
The drive operates reliably at ambient temperatures 0 °C to +55 °C (derating 2.5 %/K above 40 °C at 16 kHz) and relative humidity 5–95 % non-condensing. It meets EMC category C3 (industrial) per IEC 61800-3 and withstands vibration 1 g (10–150 Hz) and shock 15 g / 11 ms per IEC 60068. Installation altitude up to 2000 m is supported with minor derating; higher altitudes available with project-specific approval.
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