KA730JS0

Product Description:

Sanyo Denki manufactures the KA730JS0 servo motor. Beginning with its rated output of 0.3 kW. This spec indicates the motor’s ability to do work over time and convert electrical energy into rotation. 0.3kW is a moderate power for applications that require controlled movement without high torque. The 75V armature voltage means the electrical input to get the motor to run at its rated speed. The 2500 rpm is the speed the motor runs under its rated load, a baseline for typical operation. But the motor can spin up to 4000 rpm for dynamic applications. The difference between rated and max speed gives operational flexibility to handle varying load requirements and dynamic profiles. The torque characteristics are critical to overcome resistance and accelerate loads. The continuous stall torque of 1.43Nm means the motor can hold its position against a constant load without overheating; the peak stall torque of 9.8Nm is the maximum torque the motor can produce in an instant.

These torque values are tied to the motor’s magnetic field and armature current. The rotor inertia of 2.7e-4kg·m² is the motor’s resistance to change in speed. Lower rotor inertia means faster acceleration and deceleration, which is essential for high-precision motion control. The tachometer generator rotor inertia of 0.12e-4kg·m² is part of the overall inertia but is a smaller value as the tachometer is for speed feedback, not primary motion. The KA730JS0 has an incremental encoder with 2000 pulses per revolution (p/r). This encoder gives precise position feedback so you can control the motor’s angular position and velocity. 2000 p/r means for each full rotation the encoder will produce 2000 pulses so you can get acceptable position determination.

The tachometer generator gives extra speed feedback, a continuous analog signal proportional to the motor speed. The holding brake is a safety feature; the motor will stay stationary when powered off, prevent unintended movement and hold position against external forces. This is important in vertical or inclined applications where gravity can cause movement. The motor's physical characteristics also play a role in its application. With a motor flange size of 76mm, the KA730JS0 is designed to be compact for various systems. A weight of 3.7kg balances robustness with portability. The IP43 protection rating means the motor is protected against solid objects larger than 1mm and water spray from any direction up to 60 degrees from vertical. This rating means the motor can operate in moderately harsh industrial environments, dust and moisture. The ambient temperature range of 0 to 40°C means the motor can operate within standard industrial temperature.