Yaskawa V7 Drives - Manual (Page 5)

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WARNINGS, CAUTIONS, INSTRUCTIONS
YASKAWA manufactures component parts that can be used in a wide variety of industrial
applications. The selection and application of YASKAWA products remain the responsibility of
the equipment designer or end user. YASKAWA accepts no responsibility for the way its prod-
ucts are incorporated into the final system design. Under no circumstances should any
YASKAWA product be incorporated into any product or design as the exclusive or sole safety
control. Without exception, all controls should be designed to detect faults dynamically and
fail safely under all circumstances. All products designed to incorporate a component part
manufactured by YASKAWA must be supplied to the end user with appropriate warnings and
instructions as to that part’s safe use and operation. Any warnings provided by YASKAWA
must be promptly provided to the end user. YASKAWA offers an express warranty only as to
the quality of its products in conforming to standards and specifications published in the
YASKAWA manual. NO OTHER WARRANTY, EXPRESS OR IMPLIED, IS OFFERED.
YASKAWA assumes no liability for any personal injury, property damage, losses, or claims
arising from misapplication of its products.
WARNING
WARNING
• Input Fuses are required for proper branch short circuit protection for all NEMA
type 4X/12 drives. Failure to use recommended fuses (See Appendix 4) may result
in damage to the drive and/or personal injury.
WARNING
• Do not connect or disconnect wiring while the power is on. Do not remove covers or
touch circuit boards while the power is on.
• Before servicing, disconnect all power to the equipment. The internal capacitor
remains charged even after the power supply is turned OFF. Status indicator LEDs
and Digital Operator display will be extinguished when the DC bus voltage is below
50 VDC. To prevent electric shock, wait at least 1 minute after all indicators are
OFF.
• Do not perform a withstand voltage test on any part of the unit. This equipment
uses sensitive devices and may be damaged by high voltage.
• The drive is not suitable for circuits capable of delivering more than 18000 RMS
symmetrical amperes at 250V maximum or 480V maximum. Install adequate
branch short circuit protection. Refer to appendix. Failure to do so may result in
equipment damage and/or personal injury.