5500W 380V High-Voltage Servo Motor with 23-Bit Encoder

A High-Output 380V Servo Motor

The 180JASM555315K-M23BH is the highest-power unit of this 380 V family, delivering 5500 W on a 180 mm flange. Its 23-bit magnetic encoder gives fine closed-loop position resolution, and the integrated holding brake holds the load when power is removed. Running at a rated speed of 1500 r/min, it outputs 35 N·m of rated torque, making it a candidate for axes that must move substantial mass with control.

Closed-Loop Control and Precision Feedback

High-voltage servo motors like this one run as true closed-loop systems. The 23-bit encoder reports rotor angle continuously to the companion drive, which closes position, speed and torque loops. This is what distinguishes the servo from an open-loop stepper: the controller always knows the measured angle and corrects error rather than trusting that commanded steps occurred. The result is smoother low-speed rotation and tighter settling after moves.

The 300% short-time overload margin (per family spec) supports brief torque spikes during acceleration or reversal, provided the duty cycle allows the winding to cool between peaks.

Brake and Thermal Consideration

The integral brake holds the shaft stationary when de-energized, which is valuable on vertical axes or turntables where gravity acts on the load. Because the brake is part of the motor package, no separate brake on the shaft is needed. At 5500 W continuous, heat is given off by the windings; the motor should be mounted to provide the airflow the cooling arrangement requires and the duty evaluated against the frame’s thermal limits.

Suitable Applications

• CNC machine tool feed and spindle-assist axes
• Robotics and factory automation heavy joints
• Packaging, textile and printing main drives
• Material handling and battery manufacturing stations
• AGV/AMR propulsion where high torque is needed

Specifications

• Rated voltage: 380 VAC
• Rated power: 5500 W
• Frame size: 180 mm
• Rated torque: 35 N·m
• Rated speed: 1500 r/min
• Encoder: 23-bit magnetic
• Holding brake: included
• Characteristics: high rotational speed, high performance, low noise

For high-inertia, high-torque axes that still need precise position control, the 180JASM555315K-M23BH pairs large continuous output with the resolution and braking needed to do it safely.