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Safety
Voltage Potentials
Voltage potentials for the internal drive circuitry vary from 325 Volts above to 325 Volts below earth
ground for a 240 Volt input. Voltages can exceed 450 VDC or 240 VAC within the OMNIDRIVE. All
circuits, including the connections on the front panel, should be considered “hot” when main or auxiliary
power is connected and for the time specified in the warning on the front of the drive after power is
removed.
Your Responsibilities
As the user or person installing this drive, you are responsible for determining the suitability of the product
for the intended application. Thomson Industries is neither responsible nor liable for indirect or conse-
quential damage resulting from the inappropriate use of this product.
A qualified person is someone who is familiar with all safety notes and established safety practices, with
the installation, operation and maintenance of this equipment and the hazards involved. For more detailed
definitions, refer to IEC 364.
It is recommended that anyone who operates or maintains electrical or mechanical equipment should have
a basic knowledge of First Aid. As a minimum, they should know where the First Aid equipment is kept
and the identity of the official First Aiders.
These safety notes do not represent a complete list of the steps necessary to ensure safe operation of the
equipment. If you wish further information, please contact your nearest Thomson Industries
representative.
Intro
DANGER
DC bus capacitors may retain hazardous voltages for several minutes after
input power has been removed, but will normally discharge in several seconds.
Measure the DC bus voltage to verify it has reached a safe level each time
power is removed before working on the drive; or wait for the time indicated in
the warning on the front of the drive. Failure to observe this precaution could
result in severe bodily injury or loss of life.
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