Specifications

General-Purpose AC Servo
MELSERVO-J3
Direct drive motor TM-RFM series
Servo amplifier MR-J3-B-RJ080W
Direct drive motor is newly added to the MELSERVO-J3 series.
12 types of direct drive motors in the following range are available:
•Instantaneous maximum torque: 6 to 720N•m
•Motor outer diameter: ø130 to 330mm.
Direct drive arrangement with the motor provides higher rigidity. In
addition, the high-resolution encoder with the motor enables high-
accuracy control.
The motor's low profile design contributes to compact construction
and a low center of gravity for enhanced machine stability.
This motor is suitable for rotation and index tables used in
semiconductor manufacturing, liquid crystal manufacturing and
machine tool devices.
The direct drive motor and servo amplifier will be compatible with
global standards (EN, UL and CSA standards).
 Features
• Since load is directly coupled to the direct drive motor, gear reducer and transmission elements can be eliminated, offering
greater rigidity and torque.
• Due to the gearless structure, error caused by backlash can be eliminated, offering high-accuracy operation and shorter settling
time.
• The direct drive motor increases efficiency by eliminating mechanical losses.
• Smooth rotation with less audible noise is possible due to the gearless structure.
• The high-resolution encoder contributes to high-accuracy control.
• Lubrication and maintenance due to abrasion is not required.
• The motor has an inner rotor with hollow shaft which enables cables and pipes to be passed through.
• The parameter setting and monitor display functions of MR Configurator enables easy start-up and adjustment of the servo
system.
 Model configurations
zDirect drive motor zServo amplifier