Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control - Manual (Page 55)

Rockwell Automation Publication 7000-IN012B-EN-P - June 2014 55
Commissioning the Drive Chapter 4
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 heat sink to the left. A value of 80 k-
ohms indicates a healthy sharing resistor.
Figure 40 - SCR sharing resistance test
Resistance between heat sink and
red wire at plug is sharing resistance