Rexroth HMS011N-W0070-A-07-NNNN

Technical Specifications

• DC bus operating voltage: 254 V DC to 750 V DC (700 V DC nominal)
• Three-phase output voltage: 0 V AC to 500 V AC
• Peak output current: 70 A
• Continuous output current: 50.5 A
• Output frequency range: 0 Hz to 1600 Hz (adjustable with switching frequency)
• Switching frequency options: 4 kHz, 8 kHz, 12 kHz, 16 kHz
• Protection rating: IP20
• Cooling method: Built-in forced air cooling
• Control power supply: 24 V DC ±10%
• Compatible motor types: MSK, ADF, MDD, MKE series Rexroth servo motors

Functional Features

• Supports position, velocity and torque three closed-loop control modes
• Integrates overcurrent, overvoltage, undervoltage, overheating, output short-circuit and ground fault protection mechanisms
• Communicates with upper control units via IndraDrive internal backplane bus
• Modular structure supports flexible axis expansion and system configuration
• Compatible with mainstream encoder signals and industrial safety function integration

Application Scenarios

• CNC machining centers and metal stamping forming equipment
• High-speed packaging machinery and automated assembly production lines
• Material handling systems and industrial robot motion control
• Multi-axis servo drive systems in factory automation lines

Working Principle

The module receives DC power from the HMV or HMU power supply unit through the DC bus. Internal IGBT power devices convert the DC input into three-phase AC power with adjustable frequency and voltage to drive the servo motor. The upper control unit sends motion commands via the backplane bus, and the module executes power amplification and output control. It monitors output current, bus voltage and internal temperature in real time, and triggers immediate protection shutdown when any parameter exceeds the threshold. The built-in cooling fan removes heat generated by power components to ensure stable continuous operation under heavy load.

Installation Requirements

• DIN 35 rail mounting inside the control cabinet
• Maintain at least 10 mm of ventilation space on both sides of the module
• Maximum motor cable length: 15 meters
• Vertical installation is recommended for optimal heat dissipation performance
• The control cabinet must meet IP20 protection requirements

Material & Structure

• Outer shell made of industrial-grade galvanized steel with high strength and corrosion resistance
• Internal integrated IGBT power module, drive control circuit board and axial cooling fan
• Standardized backplane connector for plug-and-play assembly
• Front panel with status indicator LEDs for fault diagnosis

Usage Notes

• Do not run the module under no-load conditions for extended periods
• Ensure reliable system grounding to suppress electromagnetic interference
• Cut off all power supplies before wiring or maintenance operations
• Ambient operating temperature must be kept within 0°C to +55°C
• Regularly clean the cooling fan and air inlet to prevent dust accumulation