SGDH Sigma II

SGDH Sigma II - YAI

30W to 55kW

Sigma II Amplifier is the ultimate servo solution for your automation needs. A single platform covers 30 watts to 55 kW and input voltages of 110, 230 and 480 VAC. The Sigma II amplifier can be set to torque, speed, or position control. A single-axis controller and a variety of network interface modules can be attached to the amplifier for the utmost flexibility. The Sigma II amplifier utilizes serial encoder technology to automatically recognize Sigma II rotary and linear servomotors.

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Question	Posted Date
How can a defective ServoPack (SGDH) be replaced in the field when a working MP940 is connected? Posted Date: 10/11/2002 Answer: The attached document describes the replacement of a defective ServoPack (SGDH) in the field, while keeping the existing MP-940 for the new ServoPack. If the MP940 was properly configured, it can be used as a tool to set-up and configure the parameters of the new ServoPack without a computer. Attachments: 248KB Product Group/Line: Controllers, Servo Products, MP940 Machine Controller, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Maintenance, Parts or Replacement, Troubleshooting Document Number: MMIR-5ETTMM Published Date: 10/11/2002 Share \| Rate Rate this article :	10/11/2002
How are Yaskawa Servopacks (or Inverters) connected to a five wire 400VAC power source? Posted Date: 03/12/2002 Answer: Germany (and other European Countries) uses a five wire three phase 400VAC. Three wires are power, one is neutral, and one is ground. The 5 wire system is used to get balanced 400 V phase to phase and 230V phase to neutral (400/1.732) so control voltage can be obtained without a control transformer. In this case, the feeder transformer is a wye configuration, while the 5th wire is the power system ground. Some plants ground the neutral, while others float it. In the case of Yaskawa inverters and servos: For normal use, we ignore the neutral and utilize the 3 power phases and earth ground (system ground). For CE, Yaskawa's smaller inverters (V7, J7, and small servos) require the main AC power supply to be wye configuration with the neutral grounded in order to limit voltage to 277V or less to ground. This is to meet voltage clearance (LVD) requirements for CE. Attachments: 6KB Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Start Up - Installation, Wiring Document Number: MNEN-5CJML6 Published Date: 03/12/2002 Share \| Rate Rate this article :	03/12/2002
How are the Electronic Gear Ratio parameters, Pn202 and Pn203, set for linear motors? Posted Date: 07/25/2005 Answer: The positioning resolution of the linear motor when used with the Sigma II SGDH servo amplifier in position mode is equal to the linear encoder scale pitch divided by 256. For a 20 micron pitch linear encoder (i.e. Renishaw RGH22B), the positioning resolution is 20 micron/256. The incoming position reference is scaled by the Electronic Gear Ratio. Pn202 is the Electronic Gear Ratio numerator, set to a default of 4. Pn203 is the Electronic Gear Ratio denominator, set to a default of "1". Therefore, with these these default settings, for every reference input pulse, the linear motor will move (4/1) x (20 microns/256) or 0.3125 microns, assuming a 20 micron pitch linear encoder. The Electronic Gear Ratio can be changed to allow for "friendlier" positioning units. For example, assuming a 20 micron pitch linear encoder: 1.) The desired position reference resolution is one micron (or 0.001mm). For every reference pulse, the linear motor moves one micron. To achieve this resolution, set Pn202=256 and Pn203=20. Now, for every reference pulse, the linear motor will move (256/20) x (20 microns/256) or one micron. 2.) The desired position reference resolution is 0.001 inch. Set Pn202=8128 and Pn203=25. Now for every reference pulse, the linear motor will move (8128/25) x (20 microns/256) x (25.4 inches/0.001mm), which is equal to 0.001 inch. Product Group/Line: Servo Products, SGDH Sigma II, SGLF Series, SGLG Series, SGLT Series Topic/Sub Topic: Ask a Technical Question, Programming, Start Up - Installation Document Number: PZAC-5MHK9X Published Date: 07/25/2005 Share \| Rate Rate this article :	07/25/2005
Do Yaskawa SGDH amplifiers work with Exlar linear actuators? Posted Date: 09/21/2004 Answer: Exlar, Inc. (Chanhassen, MN) is a leading manufacturer of electric roller screw actuators. Exlar actuators are now available with Yaskawa serial encoders, allowing them to be used with standard SGDH Sigma II amplifiers. For specifications and sizing on Exlar actuators, visit their website at http://www.exlar.com. Customers specifying and purchasing actuators from Exlar will find the link below useful in selecting the appropriate SGDH amplifier and accessory components. Contact your local Yaskawa sales representative or distributor for price and availability on Sigma II amplifiers. To read an application note regarding connecting EXLAR Actuators to SGDH amplifiers -> Click on this Link Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Applications, Integration, Sizing Document Number: MWIR-5Q4PDH Published Date: 09/21/2004 Share \| Rate Rate this article :	09/21/2004
Do Sigma II motors comply with standard NEMA flanges for mounting? Posted Date: 07/25/2005 Answer: The SGMAH series of Sigma II servo motors include three models (200W, 400W & 800W) with standard NEMA flanges. For smaller motors in this series, (30W, 50W & 100W) a NEMA flange adapter (Yaskawa # SGM-N23) is available to provide standard NEMA mounting. Shaft diameters of standard Sigma motors differ from the NEMA standard. When selecting a NEMA model, the shaft size changes to SAE sizing. For the 200W and 400W motors, the shaft diameter is .50" (12.7mm), and for the 800W motor, the shaft diameter is .625" (15.875mm). The following are Yaskawa NEMA part numbers for reference. SGMAH-02_AN21 (NEMA 23) SGMAH-04_AN21 (NEMA 23) SGMAH-08AAN21 (NEMA 34) Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Specifications, Environment, Integration Document Number: REKR-5ETSMD Published Date: 07/25/2005 Share \| Rate Rate this article :	07/25/2005

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SAFETY PRECAUTIONS AND INSTRUCTIONS FOR USE OF FAQ INFORMATION!

Please read and understand the product instruction manual before installing, servicing or operating Yaskawa products. FAQ content and illustrations are provided as technical advice to augment the information in manual, not supersede it. It is not possible to give detailed instructions for all types of installation or support activities. The information described in the FAQs are subject to change without notice to improve the product or FAQ. Yaskawa assumes no responsibility for errors or omissions or damages resulting from the use of the information contained in any FAQ. All warnings, cautions and product instruction for product use must be followed. Installation, operation and maintenance should be carried out by qualified personnel. Failure to observe these and other precautions highlighted in the product manuals will expose the user to high voltages resulting in, serious injury or death. Qualified personnel are defined as individuals who are familiar with the installation, starting, operation and maintenance of Yaskawa products of the type described and have proper qualifications to perform the work.

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