Advant
®
Controller 450 User’s Guide
Chapter 5 Maintenance
5-46 3BSE 002 415R701 Rev A
Scenario C - Fault Finding
Disturbance in the controller power supply is verified.
First guidance and measures to be taken, see Figure 5-15.
Figure 5-17. First Guidance, Scenario C
SR511 LEDs Diagnostic
F 5 V2 V
ON ON ON
ON ON OFF
ON OFF ON
OFF OFF OFF
Overvoltage
Low 5 V voltage
Low 2 V voltage
5 V regulator fault
Replace SR511
1)
Replace SR511
1),
Replace SR511
1)
Replace SR511
1)
Replace or continue with
ON
OFF
OFF
5 V regulator fault
Replace SR511
1)
OFF ON ON
Normal operation
-----
See Section 5.5.10.5,
Replacement of 5 V Regulator
1)
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