Yaskawa Sigma 2 & Sigma 5 servomotors & drives are available from Micromech

Yaskawa Sigma 2 & Sigma 5 servomotors & drives are available from Micromech 
The Sigma series decisively increases a machine’s performance and productivity because YASKAWA has been aggressively challenging itself to enhance the servo performance and functions. The Sigma 5 is a servo pack is the latest in the range consisting of servomotors, servo amplifiers and a powerful set-up tool.

The Sigma-5 covers all market demands with regard to compact size, high dynamics, high efficiency, low maintenance and outstanding reliability. In addition, the auto-tuning function was optimised for the most sophisticated applications. For example, the new auto-tuning algorithm allows the perfect set-up of two axes in super high-performance machine in less than two hours compared to eight hours or longer for some rival products of servo drives.

The effects of a motor load can be simulated in the servo amplifier using a mathematical model that is part of the new control algorithm. This allows the complete motion control system to be tested before connecting the motor and means electrical engineers do not have to wait for the mechanical engineers to finish the machine.

Five different algorithms are incorporated to counter different forms of vibration at frequencies from 50Hz to 5kHz and above which results in quieter, more reliable operation, with improved productivity. Other characteristics of the Sigma-5 include an operating temperature range of 0-55°C without de-rating, the ability to handle 350% torque overloads for 3–5s and an increase in surface cutting accuracy in machining applications to 1 micron.

The major benefits of Sigma-5, such as precise and fast positioning, highest machine speed, vibration less motion, smooth running at lowest speed, make them ideal for machines in the fields of electronics, semiconductors, packaging, printing and machine tools. The are also an effective match for the injection moulding and metal forming industries, where high throughput and point-to-point positioning are decisive factors

As well as servo amplifiers, the system includes new ranges of rotary, direct-drive and linear motors. The rotary motors, initially covering ratings from 0.1–15kW, have 30% fewer components, weigh 20% less, and are 30% shorter than previous models. They have new stator and winding designs, allowing smaller machines to be used in many applications, and cutting energy consumption by up to 30%. There is a 20-bit incremental serial encoder for the new family, which provides more than a million information points per revolution. In addition there is a new coupling to link the encoder to the motor that doubles its vibration resistance (to 5G) compared to previous versions. The encoder has a five-year battery life – claimed to be twice as long as its rivals.

The Sigma-2 is a range already used widely throughout the UK is also available from Micromech. Their upgraded control algorithms enhance control, such as the model follow-up control and the vibration suppression control, against vibration. Position settling time is reduced to a third of conventional models even if your machine is not rigid.
Outstanding rapid response is achieved with 1/3 settling time due to 1/2 CPU operation time and upgraded new control algorithms. 6000min–1 is the highest speed available. Its flange is designed as IEC72. High-resolution serial encoder and d-q current vector control improve positioning speed and torque control accuracy.
For easy set-up and maintenance there is online auto tuning automatically which adjusts machine characteristics and sets servo gains. Electronic nameplate enables quick motor parameter setting. Standard braking resistor connection terminals ease connection. Built-in parameter setting device enables direct parameter input and the alarm trace back function additionally enables easy maintenance.

Option board attachments respond to expanding needs by just attaching one to the side of the SERVOPACK to link it to your motion controller or to perform highly precise positioning. Option boards for MECHATROLINK and full closed link I/F are available. Field bus links for Sercos, Profibus, CANOpen, DeviceNet, and others, which are available as option boards improve the network adaptability. These reliable, cost effective servos fully comply with International standards (CE and UL /cUL) and the motors are recognised for providing environmental resistance with protective enclosure complying with IP55 standard (Type SGMAH) and enhanced vibration resistance.

Micromech is the UK distributor and integrator for Yaskawa motors, drives and controls.
For more information about these versatile products contact Stirling Morley on 01376 333333 or email stirling@micromech.co.uk for technical or Alan Spinks on 01376 333333 or email alan@micromech.co.uk for price and delivery.

‘Affordable Automation’


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