FAQ: Can the MP2300 control a servo's position with a torque mode amplifier over MechatroLink?
Breadcrumb
Contact Us
contactUsAction
The MP2300 uses either the MechatrolLink network or an SVA module for servo control.
The SVA module is designed to work with amplifiers in Speed mode. Although in some cases a torque amplifer may be used, the control algorithm has been optimized to output an analog speed command and close only the position loop with the feedback it receives. Performance will be greatly diminished if the velocity loop is not closed at the amplifier.
With the earlier MP920 or MP930 over MechatrolLink I (NS100) the servo can only be used in position mode.
When using the MP2300 over MechatrolLink II (NS115), new command codes are available to place the servo in position, speed, torque or phase control mode. However, only position and phase modes transfer a position value to the drive. When used in torque mode, the programmer can only specify a torque reference value and a speed limit. No position information is sent. No position loop is closed in the controller. This mode is ideal for web tension control.
MechatrolLink II can command Torque Reference Mode using either 17 or 32 byte mode transfers. However, the Torque Reference can only be monitored in 32 byte mode.
To place a servo in torque mode, set the following registers:
OWxx0C Torque Reference [0.01%]
OWxx0E Speed Limit [% rated speed]
OWxx08 Motion Command
=24: Torque reference Mode
ILxx42 Torque Reference Monitor (32-byte mode only)
(Note that actual feedback position can always be monitored at ILxx16 regardless of mode.)
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.
Phone
If you have an urgent request, please call: 1-800-YASKAWA (927-5292) or 1-847-887-7000.Electronically
To contact us electronically, please select your type of request and complete the form.Yaskawa America, Inc. - Drives & Motion Division
2121 Norman Drive South
Waukegan, IL 60085