Safety Precautions and Warnings
Product User Manual
14 Operating Instructions, Version AE 12/2009, A5E01454341C
DANGER
Electrical Hazards!
• Always follow the proper lock-out/tag-out procedures before beginning any maintenance
or troubleshooting work on the drive.
• Always follow standard safety precautions and local codes during installation of external
wiring. Protective separation must be kept between extra low voltage (ELV) wiring and
any other wiring as specified in IEC61800-5-1.
• Always work with one hand, wear insulated or rubber safety shoes, and wear safety
glasses. Also, always work with another person present.
• Always use extreme caution when handling or measuring components that are inside
the enclosure. Be careful to prevent meter leads from shorting together or from touching
other terminals.
• Use only instrumentation (e.g., meters, oscilloscopes, etc.) intended for high voltage
measurements (that is, isolation is provided inside the instrument, not provided by
isolating the chassis ground of the instrument).
• Never assume that switching off the input disconnect will remove all voltage from
internal components. Voltage is still present on the terminals of the input disconnect.
Also, there may be voltages present that are applied from other external sources.
• Never touch anything within the GenIV cabinets until verifying that it is neither thermally
hot nor electrically alive.
• Never remove safety shields (marked with a HIGH VOLTAGE sign) or attempt to
measure points beneath the shields.
• Never run the drive with cabinet doors open. The only exception is the control cabinet
which contains extra low voltages (ELV).
• Never connect any grounded (i.e., non-isolated) meters or oscilloscopes to the GenIV
system.
• Never connect or disconnect any meters, wiring, or printed circuit boards while the drive
is energized.
• Never defeat the instrument’s grounding.
• Only qualified individuals should install, operate, troubleshoot, a
nd maintain this drive. A
qualified individual is "one familiar with the construction and operation of the equipment
and the hazards involved."
• Hazardous voltages may still exist within the GenIV cabinets even when the disconnect
switch is open (off) and the supply power is shut off.
• When a system is configured with drive bypass switchgear (e.g., contactors between
line and motor, and drive and motor), these switches should be interlocked so that the
line voltage is never applied to the drive output if the medium input voltage is removed
from the drive.
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