SGDH Sigma II

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
	Why does the SGDH servopack flash "bb" continuously? Posted Date: 09/06/2004 Answer: 1) The MP-940 24VDC is not connected, or the polarity of the power is reversed 2) The internal protection fuse (FU1) inside the MP-940 has been blown. (Attached please find the fuse specifications, 1.5A required, Cautionary Note: Field replacement of this field could void warranty) 3) The 24VDC power supply could be undersized, and inrush could causes a device to drop out. Keep the following specifications in mind when sizing the power supply: Continuous power consumption: MP-940 control power 0.4A SGDH (400V) control power 1.0A (3.0A surge for 50msec) (DC motor brakes should be powered by a separate supply to reduce noise) 4) If the MP-940 and SGDH are powered up together and successfuly synchronize but the SGDH subsequently loses control power and has it reapplied while the MP-940 24VDC remains constant, bb will blink. 5) If the MP-940 has been without power for over 24 hours without a backup battery attached, or the program is stored in flash. Note: Firmware Version in SGDH: 14, MP-940: A05 A fuse Source: http://www.mouser.com Attachments: 139KB Product Group/Line: Controllers, Servo Products, MP940 Machine Controller, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Alarm, Troubleshooting Document Number: MNEN-5CJMR6 Published Date: 09/06/2004 Share \| Rate Rate this article :	09/06/2004
	Why does the Servopack display an AF1 alarm when main power is removed? None of the solutions in the User's manual remedy the problem. Posted Date: 07/13/2004 Answer: A.F1 (AF1) alarm is an open phase error. Two potential external causes: 1) One or more of the contactor contacts are sticking and causing one or two phases to stay connected when they should open. Solution: Replace/Clean contacts (if serviceable), or replace contactor. 2) Another possible cause: A power line filter has been improperly installed between the contactor and the ServoPack. The three phase power line filter discharges unequally and it appears to the ServoPack that there is an open phase. Solution: Install power line filters properly, prior to the contactors in the electrical circuit. (Reference Section 3.1 in Sigma II User's Manual [YEA-SIA-S800-32.2] for wiring specifications) Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Alarm, Troubleshooting Document Number: MNEN-5CJMRA Published Date: 07/13/2004 Share \| Rate Rate this article :	07/13/2004
	Where can pin out details for the YS-12 cable be found? Posted Date: 07/13/2004 Answer: The attached drawing contains the full details on this serial (RS232) data transfer cable. The following parts will be needed to make this cable: 1) Standard 9 pin female D shell connector (PC side). 2) 24 AWG x 2 pair, 300V shielded cable. 3) Qty. 1 of Yaskawa p/n YSC-1 (mates to 3CN on SGDH, or the 6CN or 7CN when used with Application Modules). YSC-1 consists of 3M p/n's 10114-300VE (connector) + 10314-52A0-008 (shell). This part may also be found through other suppliers. If it is necessary only to increase the length of the cable (and not to build the cable from scratch), a popular option is to buy the YS-12 cable and build a serial "extension" cable. The extension cable is not Yaskawa specific and can thus be used in other RS232 communication applications. Note: Recommended maximum cable length for error free data transfer is 15 meters (50 feet). Longer cables are made at your own risk! Attachments: 1.0MB Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Wiring Document Number: MNEN-5CJMHC Published Date: 07/13/2004 Share \| Rate Rate this article :	07/13/2004
	When using SigmaWin software, what are the units when graphing torque? Posted Date: 07/13/2004 Answer: When using a matched Servo Pack / Servo Motor combination (eg. SGDH-05xx, SGMGH-05xxxxx) the units are percentage of rated torque. Sigma II allows (for emergency situations) operation of the Servo Pack / Servo Motor combinations of up two times larger or one-half smaller. This affects the units of the torque monitor by displaying the percentage of rated torque for the lowest rated component. For example: If an SGDH-05xx and an SGMGH-09xxxxx were combined, the display units would be percentage of rated torque (current) for the SGDH-05xx. If an SGDH-10xx and an SGMGH-05xxxxx were combined, the display units would be percentage of rated torque (current) for the SGMGH-05xxxxx. Product Group/Line: Servo Products, SGDH Sigma II, SigmaWin100-200 Software Topic/Sub Topic: Ask a Technical Question, Document Clarification, Operation Document Number: MMIR-5KCKFN Published Date: 07/13/2004 Share \| Rate Rate this article :	07/13/2004
	When using an absolute encoder, is it possible to set the absolute zero position through the Fieldbus Network? Posted Date: 01/09/2002 Answer: An absolute encoder reset must be done to clear the A.81 alarm. For safety reasons, this can only be performed through the SGDH front panel with a Function 8 or through the monitor software. This operation is typically only performed at machine startup when the mechanical system is coupled to the motion control system. Once the absolute zero is set, a new zero point can be established over the Fieldbus Network for the convenience of the user. Define the new zero point by using the Define Zero Point Command in the Set/Read section of Command/Response format - Section 5.3 of the NS300 User Manual. Product Group/Line: Servo Products, SGDH Sigma II Topic/Sub Topic: Ask a Technical Question, Applications, Network Communications, Start Up - Installation Document Number: MNEN-5CJMK6 Published Date: 01/09/2002 Share \| Rate Rate this article :	01/09/2002

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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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