YASKAWA SERVO Manual de usuario descargar pdf (Pagina 4)

High Performance

User-Friendly Installation

For easier setup, the Sigma II

Servo System offers adaptive

auto-tuning which eliminates

troublesome adjustment. The

number of wires needed for setup

is reduced by 50%. This is

possible by the adoption of a

serial encoder. (Absolute encoder

reduces 15 wires to 7 wires;

incremental encoder reduces

9 wires to 5 wires.)

Thanks to a modular design,

setup and operating procedures

are identical for all Sigma II

Servo models.

Sigma II Servo System offers the highest resolution control even at

high speeds, to ensure that your operations will be performed with

uncompromising accuracy. The Sigma II system utilizes a high-resolution

serial encoder (16,17 bits), with a peak speed of 5000rpm on its

SGMAH, SGMPH, and SGMSH servomotor models. 20-bit (1,048,576 ppr)

high resolution serial absolute encoders are standard with SGMCS Direct

Drive Motors. Torque control accuracy (repeatability) has also been

improved from–5% to –2%, through a new vector control system.

To improve transient characteristics during motor acceleration and

deceleration, the system can be switched between speed loop PI

(proportional integral) and P (proportional) control, helping to prevent

overshoot and undershoot.

The Sigma II Servo System allows faster positioning time through new

upgraded control algorithms which prevent vibration. A mechanical system

is modeled to compensate for system delay and suppress

vibrations when a machine has a low characteristic frequency.

This function reduces the settling time of rigid machinery.

Use of a new speed observer provides smooth motion even at low speeds

and shorter position settling time.

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YASKAWA SERVO Manual de usuario Pagina 4