ABB Advant Controller 450 - Page 399

Advant
®
Controller 450 User’s Guide
Section 5.5.9 List of General Fault Finding Procedures and Hints
3BSE 002 415R701 Rev A 5-47
Scenario D - Fault Finding
Disturbance in the I/O subrack power supply is verified.
First guidance and measures to be taken, see Figure 5-18.
Figure 5-18. First Guidance, Scenario D
2. Then see Figure 5-19
2)
I/O Subrack 1 LEDs Diagnostic
ON OFF ON
OFF ON ON
ON OFF OFF
Regulator fault
Supply branch A fault
Supply branch B fault
Replace actual DSSR 170
1)
2. Check for a disconnection in the
Replace or continue with
ON OFF ON
Normal operation
-----
OFF
OFF
ON
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
ON
OFF
OFF
OFF
ALIVE AFAIL BLIVE BFAIL PBC LIVE FAIL
DSSS 171 DSSR 170
24 V power supply distribution
I/O Subrack 2..3 LEDs Diagnostic
ON OFF ON
OFF ON ON
ON OFF OFF
Regulator fault
Supply branch A fault
Supply branch B fault
Replace actual DSSR 170
1)
ON OFF ON
Normal operation
-----
OFF
OFF
ON
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
ON
OFF
OFF
OFF
ALIVE AFAIL BLIVE BFAIL PBC LIVE FAIL
DSSS 171 DSSR 170
1. First check the fuses F501/F502
on I/O subrack DSRF 187A
(rear side)
1. First check the fuses F501/F502
on I/O subrack DSRF 187A
(rear side)
See Section 5.5.10.5,
Replacement of 5 V Regulator
1)
Valid to the power supply units
for I/O subrack 2...3
2)
Replace or continue with