Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020 185
Commissioning Chapter 4
Safety Tests
The information contained in this section of the commissioning chapter must be
completed in order to ensure that the commissioning continues in an
environment safe to all those involved in servicing the drive line-up. Every point
included in this section must be completed prior to continuing with the drive
commissioning. Ensure that commissioning of this drive line-up is performed in
accordance with local safety standards.
Lockout Tagout
Prior to opening the doors to the drive line-up cabinets, proper lockout tagout
procedures must be performed to ensure that the working environment is safe. In
addition, the equipment must be tested for potential prior to servicing the
equipment. Even though the input to the drive may be open, it is still possible for
potential to be present.
.
Refer to local safety guidelines for detailed procedures on how to safely isolate
the equipment from hazards.
The door to the medium voltage cabinets can only be opened after the lockout
and tagout are successfully completed.
ATTENTION: Servicing energized industrial control equipment can be
hazardous. Severe injury or death can result from electrical shock, burn, or
unintended actuation of control equipment. Hazardous voltages may exist in
the cabinet even with the circuit breaker in the off position. Recommended
practice is to disconnect or lock out control equipment from power sources, and
confirm discharge of stored energy in capacitors. If it is necessary to work in the
vicinity of energized equipment, the safety related work practices of NFTA 70E,
Electrical Safety requirements for Employee Work places, must be followed.
ATTENTION: Before attempting any work, verify the system has been locked
out and tested to have no potential.
ATTENTION: Live capacitors in circuit. Before touching anything, ensure that
the drive is isolated from medium voltage and wait five minutes for the
capacitors to discharge. Test the circuit for potential before servicing the
equipment. Failure to do so can result in severe injury or death.
ATTENTION: Ensure that the motor is not spinning due to a driven load. A
spinning motor can generate a high potential into the drive’s motor filter
capacitors, which can result in severe injury or death.
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