Door position limit switch – Rockwell Automation 6012DB PowerFlex Medium Voltage Variable Frequency Drive User Manual

Page 23

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Rockwell Automation Publication 6000-UM001B-EN-P - October 2014

23

Drive System Layout

Chapter 2

Door Position Limit Switch

Each cabinet door that allows access to medium voltage components is lockable
and also has a Guardmaster® safety limit switch. If the cabinet door is opened
when the input switching device feeding power to the drive is closed, the input
device will be tripped off.

Figure 13 - Door Position Limit Switch Location

ATTENTION: The door position interlock is a safety feature. It must not be used
solely as a part of the plant operation process to ensure the drive has been
disconnected from input medium voltage. Keep the medium voltage doors
locked as standard practice. If access to the medium voltage rated cabinets is
required, always go to the input device feeding the drive to verify if it is open.
Lock out and tagout the input device before performing any work on the drive
or bypass units.

Door Position Limit Switch

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