Overview
The Rexroth R911320227 KSM01.2B-076C-35N-M1-HP0-SE-NN-D7-NN-FW is a distributed servo drive from the IndraDrive Mi product family. This unit integrates a synchronous servo motor with dedicated electronic control and power stages into a single compact assembly. The combination eliminates the need for separate motor and drive enclosures, streamlining system layout and reducing wiring complexity. Designed for high-speed, high-precision positioning and velocity control, this servo drive delivers reliable performance across cartoning machinery, robotic systems, and automated packaging applications.
Key Features
- Integrated Servo Drive Design: Motor, control electronics, and power inverter combined in one unit; reduces parts count and integration effort.
- SERCOS II Communication: Real-time master interface via RS-422 protocol; supports deterministic multi-axis synchronization and low-jitter encoder feedback.
- Peak Torque Performance: 29 Nm maximum torque output with 8.7 Nm continuous torque at standstill; 4700 RPM maximum rotor speed.
- Multiturn Absolute Encoder: Integrated optical encoder with Hiperface interface and 128 increments; supports safe commutation after power-up without homing.
- Industrial-Grade Reliability: IP 65 enclosure protection per IEC 60529; operates across 0–40 °C ambient range with < 75 dB sound pressure level.
- Keyed Shaft with Sealing: DIN 6885-1 compliant keyway shaft design with integrated sealing ring for robust mechanical coupling.
Technical Specifications
- Motor Type: Permanent Magnet Synchronous Servo Motor
- Peak Torque: 29 Nm (motor)
- Continuous Torque (Standstill): 8.7 Nm
- Maximum Speed: 4700 RPM
- Rated Output Power: 1240 Watts
- Maximum Current: 17.7 Amperes (motor phase current)
- DC Bus Voltage: 640–750 V (rated 750 V DC)
- Control Power: 30–42 V DC at 15.5 W (control circuit)
- Cooling Mode: Natural convection
- Insulation Class: 155 (per EN 60034-1)
- Encoder Type: Multiturn Absolute, Hiperface, 128 increments
- Master Communication: SERCOS II (RS-422)
- Shaft Design: Keyed with sealing ring; DIN 6885-1
- Weight: Approximately 14.5 kg
- Protection Class: IP 65 (IEC 60529) enclosure; IP 20 connector area
- Thermal Time Constant: 25 minutes
- Torque Constant: 1.85 Nm/A @ 20 °C
- Back-EMF Constant: 113.8 V/1000 RPM @ 20 °C
- Operating Temperature: 0–40 °C ambient
- Humidity Range: 1–60 g/m³ absolute
- Short Circuit Rating: 42,000 Arms
- Bypass Current Max: 25 Amperes
- DC Bus Capacitance: 0.024 mF
- Switching Frequencies Supported: 4 kHz, 8 kHz
Typical Applications
- High-speed cartoning and case-packing machines
- Robotic pick-and-place and articulated arm systems
- Automated packaging and labeling equipment
- Multi-axis CNC and milling machine positioning
- Servo-driven conveyor tracking and synchronized line shafts
- Precision assembly and test equipment requiring low latency and deterministic real-time control
Compatibility & Replacements
Compatible With
- Rexroth IndraDrive Mi control system (KCU01, KMS01 controllers)
- SERCOS II (RS-422) master interfaces on PLC or motion controller
- Bosch Rexroth hybrid power/signal cabling and connectors (M23 power, M17/M23 encoder feedback)
- Firmware MPB-04V20 and later Rexroth firmware versions for KSM01 motors
- Rexroth drive engineering tools and parameter configuration software
Replaces / Drop-In Replacement For
- Other KSM01.2B-076C frame-size motors with matching encoder suffix (-D7-), winding (35N), and control variant (HP0)
- Verify mechanical shaft type (keyed vs. smooth) and brake option (NN = no brake) match original equipment before ordering
- Not directly compatible with KSM01.2B smaller frame sizes (e.g., 061, 071) or different winding specs without parameter reconfiguration
Works With
- SERCOS II real-time communication protocol (integrated)
- Rexroth IndraDrive Mi ecosystem (recommended native integration)
- Hiperface encoder interface for multi-turn absolute position feedback
- 24 V DC electrically released holding brake (where fitted per code)
- Siemens, Omron, and other PLC platforms with SERCOS II gateway modules (integration effort required; not native)
- EnDat 2.2 position feedback where encoder protocol matches unit configuration
