HarmonicDrive SHA - Y series, Manual, Page: 13 / 103

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Combined with YASKAWA
Σ
-7 series Servopacks, SHA-Y series AC Servo Actuators can be controlled with
MECHATROLINK-
Ⅲ
to provide high torque and highly accurate rotary operation. These AC Servo
Actuators are each composed of HarmonicDrive
®
speed reducer (size 25 to 65 ) and a flat AC servo motor.
There are 3 types of speed reducers: SG with SHG series, HP with HPF gearheads, and CG with CSG
series. They are an advanced version of current FHA series AC Servo Actuators having a flat, hollow
structure.
One key feature of SHA-Y series actuators is their compact size. The outer diameter has been reduced,
while the maximum torque/volume ratio is approximately double that of any conventional actuator. The
hollow structure maintains the same size as conventional actuators. A through-hole is provided at the center
of the actuator, through which wirings, air pipes, and even laser beams can be passed to supply power and
give/receive signals to moving parts of machines and devices.
SHA-Y series actuators play an important role in driving various factory automation (FA) equipment, such as
robot joints, alignment mechanisms for semi-conductor and LCD devices, ATC of metal-cutting machines,
printing machine roller drive, etc.
◆
Doubled torque/volume ratio
The incorporation of a SHG or CSG high-torque HarmonicDrive
®
reducer has achieved an approximately
20% smaller external diameter when compared with our conventional products. Accordingly, the maximum
torque/volume ratio has increased to approximately double the ratio of any conventional actuator. Based on
the maximum torque, you can select a model of one smaller size. Also, output torque at the same
volume/weight is very high compared to when a direct drive motor is used.
◆
Larger size added for a wide product lineup
6 models are available for SG type including those (#58, #65) accommodating high torque up to 3,400 Nm -
the range not previously supported. The wide lineup also includes models supporting intermediate reduction
ratios of 81:1, 121:1, and so on. CG series has 4 models available with 5 reduction ratios of 50:1 to 160:1.
◆
Modular design
The components of the SHA-Y series, such as speed reducers, output shaft bearing, motor, brake and
encoder, are arranged based on modular design. We can also custom-design a model meeting your specific
requirements, so please contact your HDS sales representative.
◆
17-bit magnetic absolute encoder
The newly developed AC servo motors are equipped with HDS's original highly reliable 17-bit magnetic
absolute encoder with safety function. The serial communication saves wiring and provides not only a multi
revolution counting function which is a must-have feature of actuators with speed reducers, but it also has
an internal backup battery to retain absolute positions even when the encoder cable is disconnected briefly.
The encoder also constantly compares two sets of detected angles. If any abnormality is found, the
encoder's built-in failsafe function outputs a signal to the host system. This certainly helps you build a safe
system.
◆
Can be combined with Σ
-7
Combination with YASKAWA
Σ
-7 is now possible, allowing it to be controlled with MECHATROLINK-
Ⅲ
.