Owner manual

272 Rockwell Automation Publication PFLEX-IN029B-EN-P - August 2014
Appendix A PowerFlex 700H and 700S Diagnostic Procedures
Figure 40 - DC Fan System Block Diagram
DC Fan Power Supply Circuit Board
ASIC
Circuit
Board
(X11)
X8
of
Next
Fan
X8
X3
X2
1 - DC+ 3 - DC-
1 - Fan PWM 2 - Iso +18V 3 - Fan Control 4 - Fan Alarm Fr9 5 - DC- Ref 6 - Fan Alarm Fr8 7 - Fan Alarm Fr10
OPTO
OPTO
OPTO
1 - Next Fan PWM 2 - Iso +18V* 3 - Next Fan Control 4 - Next Fan Alarm*
dc/dc Converter
Fault Detect
Driver
X81 Blue
X81 Red
DC+DC-
Isolation
PWM Contoller
DC-
+18V
Ifdbk
Temp
OPTO
+
_
X81 Yellow
X81 White
Rotate
48V DC Fan
Vfdbk
Control