Rockwell Automation Publication 7000-UM202D-EN-P - May 2018 121
Power Component Definition and Maintenance Chapter 2
Install the replacement DC link in the reverse order of its removal.
You must connect the flexible DC link leads to the appropriate terminal and
route them to maintain electrical clearances. You must also verify that the
nameplate ratings are the same or appropriate for the drive system. A different
DC link will require different parameter settings.
The DC link maintains a low ripple current between the line converter and the
machine converter. Thermal protection of the DC link reactor is provided by
two normally closed contacts wired to the I/O module. These contacts will
open at 190°C and cause a fault/alarm message to be displayed.
Removing and Replacing Fans
The fan consists of a motor and impeller assembly. To replace the fan, remove
the fan exhaust hood and cabinet top plate.
Safety Notes
• Fan replacement requires working at a significant height from the floor.
Be careful to work from a safe, stable platform.
• The fan motor is heavy and requires suitable lifting provision.
• Lock out the fan power during fan maintenance.
Remove the eight nuts that secure the motor frame to the side sheets of the
cabinet. Disconnect the power leads to the motor. Note the terminal locations
so that proper fan rotation is maintained.
To extract the fan, use lifting hooks in the holes on the motor mounting
brackets and draw the assembly vertically from the cabinet. Do not support the
assembly on the impeller or you may damage the unit.
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