Fault Listing - ABB ACH550 series User Manual

E-Clipse Bypass Configurations for ACH550 Drives

Fault Listing

Fault
Fault Name In Panel
Code
3001 COIL CURR FBK
3002 BYP CNTACT STUCK
3003 DRV CNTACT STUCK
3004 BYPASS COIL OPEN
3005 DRIVE COIL OPEN
Fault
RBCU is sensing
abnormal current
feedback when neither
contactor should be
energized
M2 contactor indicates
it is not prepared to
move on a power up
check of the contactor
or after contact is
commanded to open
M1 contactor indicates
it is not prepared to
move on a power up
check of the contactor
or after contact is
commanded to open
M2 contactor will not
close when
commanded to do so
M1 contactor will not
close when
commanded to do so
Possible Cause
Defective component
on RBCU
Defective Contactor
Defective RBCU
Defective Contactor
Defective RBCU
Loose J8 connector on
RBCU
Loose wires on
contactor terminals A1
and/or A2
Bad Output on RBCU
Bad Contactor
Loose J8 connector on
RBCU
Loose wires on
contactor terminals A1
and/or A2
Bad Output on RBCU
Bad Contactor
Diagnostics and Troubleshooting
73
Corrective Action
Change RBCU
Disconnect incoming
power from unit
Check if contactor
armature moves freely.
If armature moves
freely, then change the
RBCU. If armature does
not move freely, then
change individual
contactor (M2) or the
complete assembly
(RCSA-0x)
Disconnect incoming
power from unit
Check if contactor
armature moves freely.
If armature moves
freely, then change the
RBCU. If armature does
not move freely, then
change individual
contactor (M1) or the
complete assembly
(RCSA-0x)
Verify that J8 connector
is firmly seated.
With incoming power
disconnected, check for
tightness of A1 and A2
terminals
Swap RBCU
Change Contactor/
Assembly
Verify that J8 connector
is firmly seated.
With incoming power
disconnected, check for
tightness of A1 and A2
terminals
Swap RBCU
Change Contactor/
Assembly