The MHD112D-027-NPO-RN is a high-performance servo drive from Bosch Rexroth, a leader in industrial motion control solutions. As part of the MHD series, this drive is engineered to deliver precise, dynamic control of servo motors in complex automation systems, bridging the gap between command signals and mechanical motion with exceptional accuracy.
At its core, the MHD112D-027-NPO-RN converts electrical power into controlled mechanical motion, regulating speed, torque, and position with minimal latency. This makes it a critical component in setups where precision is non-negotiable—whether synchronizing multiple axes in a production line or maintaining tight tolerances in repetitive tasks. What sets the MHD112D-027-NPO-RN apart is its balance of power density and responsiveness, allowing it to handle moderate loads while adapting quickly to changing operational demands. Its integration-friendly design ensures seamless compatibility with Rexroth’s motion control ecosystems, as well as third-party PLCs and HMI systems, making it a versatile choice for both new installations and retrofits.
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Parameter |
Value |
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Product Model |
MHD112D-027-NPO-RN |
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Manufacturer |
Bosch Rexroth |
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Product Type |
Servo Drive |
|
Rated Output Power |
7.5 kW |
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Input Voltage |
3 x 400-480 V AC (50/60 Hz) |
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Continuous Output Current |
27 A |
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Peak Output Current |
81 A (3-second duration) |
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Control Modes |
Position, speed, torque, and electronic gearbox |
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Communication Protocol |
PROFINET |
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Operating Temperature Range |
0°C to 40°C (ambient, without derating) |
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Protection Class |
IP20 (enclosure) |
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Dimensions (W x H x D) |
112 mm x 240 mm x 180 mm |
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Mounting Type |
DIN rail or panel mount |
The MHD112D-027-NPO-RN excels in dynamic performance, a critical advantage in high-speed automation. Its advanced control algorithms minimize settling time, allowing servo motors to reach target positions or speeds faster than many competing drives—ideal for applications like pick-and-place robots, where cycle time directly impacts throughput. This responsiveness is paired with exceptional stability; even under varying loads, the MHD112D-027-NPO-RN maintains consistent performance, reducing product defects in precision tasks such as laser cutting or electronic component assembly.
Diagnostic capabilities are another standout feature. The drive includes real-time monitoring of key parameters—current, voltage, temperature, and motor health—with instant alerts for anomalies like overcurrent or communication errors. This proactive feedback enables maintenance teams to address issues before they cause downtime, a vital benefit in 24/7 production environments.
Durability is built into the design. The MHD112D-027-NPO-RN uses rugged components rated for industrial duty cycles, with protection against electrical noise and voltage spikes common in factory settings. Its compact form factor saves panel space, while flexible mounting options simplify integration into crowded control cabinets. Compatibility with PROFINET ensures easy connectivity to modern industrial networks, supporting data exchange for predictive maintenance and process optimization.
The MHD112D-027-NPO-RN thrives in industries demanding precise motion control. In automotive manufacturing, it powers robotic arms on assembly lines, where it synchronizes weld gun movements to within 0.1 mm, ensuring consistent joint quality across vehicle frames. Its ability to handle rapid start-stop cycles also makes it ideal for conveyor systems in automotive plants, where parts must be positioned with pinpoint accuracy for automated inspection or labeling.
In packaging machinery, the MHD112D-027-NPO-RN controls filling and sealing mechanisms. For example, in food and beverage production, it regulates the rotation speed of capping heads, applying uniform torque to prevent leaks without damaging containers—a task requiring both precision and adaptability to varying bottle sizes.
Metalworking facilities rely on the MHD112D-027-NPO-RN for CNC machine tools, where it drives spindle and axis movements. Whether milling complex aerospace components or cutting sheet metal, the drive’s stability ensures tight dimensional tolerances, reducing scrap rates and rework. Its PROFINET integration also allows these machines to feed performance data to plant management systems, supporting continuous process improvement.
Installation of the MHD112D-027-NPO-RN requires a clean, dry environment with adequate ventilation—ambient temperatures exceeding 40°C will require derating to prevent overheating. The drive mounts on standard DIN rails or via panel screws, with at least 50 mm of clearance above and below for airflow. Electrical preparation includes verifying three-phase input voltage matches 400-480 V AC, ensuring proper grounding (PE connection), and isolating power during wiring to avoid damage. PROFINET cabling should be shielded and routed separately from power lines to minimize interference.
For maintenance, regular visual inspections every six months check for loose connections, dust buildup, or signs of overheating (discoloration). Cleaning with compressed air (low pressure) removes debris that can impede cooling. The drive’s diagnostic menu should be reviewed monthly to log performance trends, such as rising current draw, which may indicate motor wear. Firmware updates, available through Bosch Rexroth’s service portal, should be applied annually to enhance functionality and address potential bugs. Replacement of internal fans (if equipped) is recommended every 5 years to maintain cooling efficiency.
