Safety, Installing and using the ultra200 series, Potential hazards – Rockwell Automation 1398-DDM-xxx USE MNL/ULTRA 200 DIG.SERVO.DR User Manual

Page 27: Voltage potentials, Chapter 1, Installing and using the ultra 200 series

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Publication 1398-5.0 – October 1998

Chapter 1

Safety

Chapter 1

Installing and Using the
ULTRA 200 Series

Read the complete manual before attempting to install or operate the
ULTRA 200 Series drive. By reading the manual you will become
familiar with practices and procedures that allow you to operate the
ULTRA 200 Series drive safely and effectively.

Potential Hazards

The equipment described in this manual is intended for use in
industrial drive systems. This equipment can endanger life through
rotating machinery and high voltages, therefore it is essential that
guards for both electrical and mechanical parts are not removed. The
main hazards which can be encountered in the use of this equipment
are:

Electric shock hazards

Electric fire hazards

Mechanical hazards

Stored energy hazards

These hazards must be controlled by suitable machine design, using
the safety guidelines which follow. There are no chemical or ionizing
radiation hazards.

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 ULTRA 200 Series. 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.

!

Intro

ATTENTION: 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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