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Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020
Chapter 5
Component Definition and Maintenance
Power Connections are made to the DC Link through flexible leads, and they are
labeled L+, L-, M+, and M-. There is a Hall Effect current sensor on the M+
connection to the DC Link.
DC Link Reactor
The DC Link maintains a ripple-free current between the rectifier and the
inverter. Thermal levels in the DC Link are achieved through cooling water.
The DC Link Reactor does not normally require service. To replace the DC
Link, refer to
and complete the following steps.
1.
Ensure the MV source power to the drive is locked out.
2.
Drain the coolant from the drive system.
3.
Lock out the control power.
4.
Access the DC Link cabinet and remove the cooling connections to the
DC Link.
5.
Disconnect the 4 power connections to the DC Link. Remember to note
the location for each of the cables on the DC Link.
6.
Remove the hardware that secures the DC Link to the ground channels.
7.
Remove the DC Link frame ground connection.
8.
Using a lift truck, remove the DC Link from the cabinet.
9.
Install the replacement in the reverse order.
