FAQ: What is the power-up sequence for the MP940?
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The 24VDC power for the MP940 should turn on within 3 seconds of the control power for the servopack. After they are both powered up, control power should remain ON for both products until the entire machine control system is to be powered down. If either product loses control power, an A.E2 (watchdog timer) alarm will occur indicating loss of communication between the servopack and the option card. It will be necessary to cycle control power on both units to reset this alarm.
NOTE: In the case of Emergancy Stop, it is not necessary to remove control power from either the servopack or the MP940. (Only remove power from primary movers - such as Servopack main power or 24VDC power to isolated I/O).
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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If you have an urgent request, please call: 1-800-YASKAWA (927-5292) or 1-847-887-7000.Electronically
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2121 Norman Drive South
Waukegan, IL 60085