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Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) User Manual

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58

Rockwell Automation Publication 7000-UM151E-EN-P - January 2013

Chapter 3 Component Definition and Maintenance

Figure 38 - Thermal sensor replacement (heatpipe model)

Replacing the Symmetrical Gate Commutated Thyristor

The Symmetrical Gate Commutated Thyristor (SGCT, or “device”) with
attached circuit board is located within the PowerCage assembly.

You must replace SGCTs in matched sets:

• 4160V systems use sets of 2
• 6600V systems use sets of 3

THERMAL SENSOR
PLUGS INTO FEED BACK
CIRCUIT BOARD

AIR FLOW SENSOR

PLUGS INTO FEED BACK

CIRCUIT BOARD

AIR FLOW SENSOR

MOUNTING BRACKET

TEMPERATURE FEEDBACK
AIR FLOW CIRCUIT BOARD