Chapter 1 Introduction
1–2
1-1 Intelligent servomotor outline
The Mitsubishi intelligent servomotor is an integrated motor, encoder and amplifier, and has the
following features.
• Space saving
The amplifier does not need to be stored in the power distribution panel, so the machine, power
distribution panel and heat exchanger can be downsized.
• Wire saving
Only one wire is used between the NC and motor. (The signal and 200VAC input are wired with
the same cable.)
• Flexible
As an option axis can be added without changing the power distribution panel, variations can be
easily added to the machine.
• High-speed
As the power distribution panel does not require space, the servo can easily be used for
hydraulic and pneumatic devices.
1-2 Limits and special notes for intelligent servomotor
1-2-1 Precautions for selecting the intelligent servomotor
(1) The intelligent servomotor does not have the regenerative resistor option (the regenerative
resistor capacity cannot be increased.). Make sure that the regenerative energy is less than the
tolerable regenerative capacity. Use the standalone HA/HC Series motor and
MDS-B-V1/V2/SVJ2 Series servo amplifier for applications having a high regenerative energy
due to a high positioning frequency or large load inertia, etc.
(2) The HS-MF23 type does not have a regenerative resistor. There may be limits to the working
rotation speed depending on the load inertia. Avoid using in applications generating continuous
regeneration, such as with a vertical axis.
1-2-2 Precautions for use
(1) IP65 is recommended for the engagement of the HS-RF∗∗/SF∗∗ type connector. Make sure that
water or oil, etc., does not come in contact in the disengaged state.
(2) Connect the HS-MF type relay connector in a relay box having a structure (IP54) that prevents
the entry of water, oil and dust, etc. Fix the enclosed cable to the motor.
(3) A contact that released the brakes when the servo turns ON is built-in. The brakes will not be
released just by inputting the 24V power from an external source. If the brakes need to be
released when assembling the machine, etc., refer to section 6-4. Wiring a motor with brakes.
1-2-3 Miscellaneous
(1) When the motor shaft is turned by hand, it may seem heavier than other servomotors, or may
seem tight. This is caused because of the dynamic brakes in the built-in amplifier, and is not a
fault.
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