Advant
®
Controller 450 User’s Guide
Section 5.5.9 List of General Fault Finding Procedures and Hints
3BSE 002 415R701 Rev A 5-43
General
Fault finding in the controller cabinet is carried out as follows.
Before replacing a power supply unit or a fuse or resetting a MCB try to check for a reason of
the fault. If deemed too time consuming, it is always possible to try the easy way and “look for
the smoke”.
Scenario A - Fault Finding
Total shut down is verified.
First guidance and measures to be taken, see Figure 5-15.
Figure 5-15. First Guidance, Scenario A
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
Lost 24 V voltage
Replace SR511
1)
Replace SR511
1), 2)
Replace SR511
1)
Replace or continue with
ON
OFF
OFF
Low 24 V voltage or 5 V reg. fault
OFF ON ON
Normal operation ------
2. Replace SR511
1)
See Section 5.5.10.5,
Replacement of 5 V Regulator
1)
If fault remains there is an overload
in the controller subrack
2)
See Figure 5-19
1. See Figure 5-19