ABB Advant Controller 450 - Mains Supply and 24 V Power Supply - General Fault Finding

Advant
®
Controller 450 User’s Guide
Chapter 5 Maintenance
5-48 3BSE 002 415R701 Rev A
Mains Supply and 24 V Power Supply - General Fault Finding
Figure 5-19. Fault Finding, Mains Supply and 24 V Power Supply
24V distribution (SX554)
Mains supply A/B
Take measures
Replace 5 V Regulator
ON
OFF
U < min
Y
N
LIVE
Power switch (SX5xx)
Power supply (SA16x)
Reset MCB
Y
N
N
Y
MCB tripped
output
U < 19 V
Y
N
Fuse blown
Reset/Replace fuses
Check for a disconnection
in the 24 V power supply
distribution
> 19 V
Test
See Section 5.5.10.5,
Replacement of 5 V Regulator
See Section 5.5.10.4, Replacement of
Power Supply Unit
Replace SA16x