Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 271)

TROUBLESHOOTING 10-29
1557-UM050F-EN-P – June 2013
NOTE: The following Figure shows the line side converter heatsink stack assembly. Some type of
machine side converter heatsink stack assembly does not have the bottom nuts on the fiberglass-
clamping rod and the device orientation is in downward direction. The procedure to loosen the
machine and line side heatsink stacks is the same.
ALLEN-BRADLEY
GTO & SCR REPLACEMENT INSTRUCTION SHEET
For assemblies with FIBERGLASS CLAMPING RODS
Dwg. 80098-925(2)
Figure 10.6 – New Style Heatsink Stack Assembly