86 Rockwell Automation Publication 7000-UM202D-EN-P - May 2018
Chapter 2 Power Component Definition and Maintenance
SCR Sharing Resistance Test
To test the sharing resistor of an SCR module, disconnect the 2-pole plug of
the self-powered gate driver board labeled SHARING and SNUBBER on the
circuit board. The red wire of the plug is the sharing resistor. Measure the
resistance between the red wire of the plug and the heatsink to the left. A value
of 80 k-ohms indicates a healthy sharing resistor.
Figure 76 - SCR Sharing Resistance Test
Resistance between heatsink
and red wire at plug is
sharing resistance
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