Troubleshooting 10-29
1560D-UM051D-EN-P – February 2005
Snubber Resistor Replacement When replacing the surface-mount style snubber resistor used in this product,
it is very important to apply a thin layer (approximately 0.02 inches or
0.5 mm) of electrical joint compound to both the resistor mounting surface
and the surface to which it is mounted. Some compound may already be
present from the old resistor, but it is best to wipe the area clean and apply
a fresh layer with your finger or a lint-free cloth. This will ensure a good
thermal interface between the two surfaces, which is essential for optimum
performance and life of the resistor. A small container of compound will
be supplied with the replacement resistor; however, if more is required, it
can be ordered from Rockwell Automation by part number RU-6052.
When installing the mounting screws, alternately tighten each screw
gradually to ensure uniform pressure distribution over the mounting
surface. Wipe off any excess compound that may have squeezed out while
tightening the mounting screws.
When replacing the ceramic wire-wound type snubber resistors, use
caution when handling the parts. The resistor element is under a thin
coating on the ceramic tube, and it may be damaged if dropped, struck or
scraped.
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