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  3. AC Servo Drivers HA-680ML series


  • AC Servo Drivers HA-680ML series
  • Slave Servo Drive

    M-II M-III M-4

Harmonic Drive Systems Inc.Updated on:Apr 4, 2019

  • Small and compact design
    It is about half the size of a postcard, just the size of a card case. Its ultra-light design with a weight of 230 g is useful for small, space-saving devices.
  • Substantial functions
    Position control, speed control, and torque control are provided as standard. It is compact and has substantial functions at the same time.
  • Easy function setting
    Parameters can be set easily using dedicated communication software PSF-520.




Item Specifications
Node address setting 41H to 5FH (Max. number of slaves: 30)
Supply voltage DC24V (20 to 28V)
Control method Sinusoidal PWM control switching frequency 12.5kHz
Encoder 4-line specification, serial transmission method, line driver input
Encoder monitor Phase-A, B, Z line driver output
I/O signal DI: 5 points (insulation with photo coupler)
DO: 5 points (insulation with photo coupler)
Protection function Overload, Max. deviation, Encoder break detection, encoder reception error, UVW error, regenerative error, operating temperature error, system error, overcurrent, load short circuit, memory error, overspeed
Regenerative absorption circuit Incorporated (with an external capacitor/resistor installation terminal).
The built-in resistance has a fuse.

MECHATROLINK specifications

  M-Ⅰ M-Ⅱ
17-byte 17-byte 32-byte
Command Servo × ×
Transmission cycle 1ms, 2ms, 3ms, 4ms, 5ms

Contact Information

Harmonic Drive Systems Inc.

Head Office 6-25-3 Minami-Ohi, Shinagawa-ku, Tokyo, 140-0013, Japan
TEL: +81-3-5471-7800 FAX: +81-3-5471-7811
Overseas Division 1856-1 Hotakamaki, Azumino-shi, Nagano, 399-8305, Japan
TEL: +81-263-83-6935 FAX: +81-263-83-6901
HOTAKA Plant 1856-1 Hotakamaki, Azumino-shi, Nagano, 399-8305, Japan
TEL: +81-263-83-6800 FAX: +81-263-83-6901