YASKAWA E7LBA002, Technical Manual

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Warnings and Cautions
This Section provides warnings and cautions pertinent to this product, that if not
heeded, may result in personal injury, fatality, or equipment damage. Yaskawa is
not responsible for consequences of ignoring these 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 products 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.
•
Read and understand this manual before installing, operating, or servicing this Drive and Bypass Unit. All warnings, cautions,
and instructions must be followed. All activity must be performed by qualified personnel. The Drive must be installed accord-
ing to this manual and local codes.
•
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 five minutes after all indicators are OFF and measure DC bus voltage level
to confirm safe level.
•
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 and Bypass unit is not suitable for circuits capable of delivering more than the specified RMS symmetrical
amperes. Install adequate branch short circuit protection per applicable codes. Refer to the specification. Failure to do so
may result in equipment damage and/or personal injury.
• Do not connect unapproved LC or RC interference suppression filters, capacitors, or overvoltage protection devices to the
output of the Drive. These devices may generate peak currents that exceed Drive specifications.
•
To avoid unnecessary fault displays caused by contactors or output switches placed between Drive and motor, auxiliary
contacts must be properly integrated into the control logic circuit.
• YASKAWA is not responsible for any modification of the product made by the user; doing so will void the warranty. This
product must not be modified.
•
Verify that the rated voltage of the Drive and Bypass unit matches the voltage of the incoming power supply before applying
power.
WARNING
WARNING