Allen-Bradley PowerFlex 7000

84 Rockwell Automation Publication 7000-UM202D-EN-P - May 2018
Chapter 2 Power Component Definition and Maintenance
Figure 74 - SCR snubber Circuit Connections
SCR Resistance Measurement Measured Resistance
Inverter Rectifier (SCR only)
SCR Anode-Cathode Resistance (heatsink to
heatsink) k-Ω
(Lowest) (Highest) (Lowest) (Highest)
SCR Gate-Cathode Resistance (across SCR
Phoenix connector) Ω
Snubber Resistance (Test point: heatsink
above) Ω
(Lowest) (Highest) (Lowest) (Highest)
Snubber Capacitance (Test Point – heatsink
on Right) µF
(Lowest) (Highest) (Lowest) (Highest)
Sharing Resistance (Red wire from snubber
Phoenix connector—heatsink on left) k-Ω
(Lowest) (Highest) (Lowest) (Highest)
HeatsinkHeatsink
To Gate Driver Board
Heatsink
Heatsink
Snubber
Resistor
Snubber
Capacitor
Sharing Resistor
Test Point