Rockwell Automation MV SMC Flex OEM Components - Manual (Page 31)

Power Stack Installation 4-15
1503E-IN001E-EN-P – June 2013
The CLGD power assembly is provided as a loose component with the
power stacks. It should be mounted adjacent to the power stacks in a
manner that allows the secondary cable assembly to be correctly
installed (see below). The CLGD power assembly requires a 110/120
or 220/240 VAC (50/60 Hz), 50 VA, primary source of power.
Use the supplied three-phase cable assembly to make the secondary
connections. Route the cable through the CLGD board CTs, as shown
in Figure 4.11. Refer to Chapter 7 for typical wiring diagram.
Figure 4.11 – Installation of Cable through CLGD CTs
The supplied cable comes with a protective sheath that should also be
installed. It protects the cable and enhances the system insulation
level.
NOTE: There are three individual cable loops (one for each
phase) connected in series. The cable length must be 6.4
metres (21 feet). Do not cut the extra length from these
cables, as they represent the load for the transformer in
the above power assembly. If they are shortened, the
loop current will be incorrect, and the CLGD boards
may not function properly during stop maneuvers.
Current Loop Gate Drive
Power Assembly (CLGD)