ABB ACH550-UH User Manual

ACH550 E-Clipse Bypass User’s Manual 2-225
Diagnostics
Fault listing
Fault
Code
Fault Name In
Panel
Fault Possible Cause Corrective Action
3001 COIL CURR FBK RBCU is sensing
abnormal current
feedback when neither
contactor should be
energized
Defective component
on RBCU
Change RBCU
3002 BYP CNTACT
STUCK
M2 contactor indicates
it is not prepared to
move on a power up
check of the contactor
or after contact is
commanded to open
Defective Contactor
Defective 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)
3003 DRV CNTACT
STUCK
M1 contactor indicates
it is not prepared to
move on a power up
check of the contactor
or after contact is
commanded to open
Defective Contactor
Defective 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 (M1) or the
complete assembly
(RCSA-0x)
3004 BYPASS COIL
OPEN
M2 contactor will not
close when
commanded to do so
Loose J8 connector
on RBCU
Loose wires on
contactor terminals A1
and/or A2
Bad Output on RBCU
Bad Contactor
Verify that J8
connector is firmly
seated.
With incoming power
disconnected, check
for tightness of A1 and
A2 terminals
Swap RBCU
Change Contactor/
Assembly
3005 DRIVE COIL
OPEN
M1 contactor will not
close when
commanded to do so
Loose J8 connector
on RBCU
Loose wires on
contactor terminals A1
and/or A2
Bad Output on RBCU
Bad Contactor
Verify that J8
connector is firmly
seated.
With incoming power
disconnected, check
for tightness of A1 and
A2 terminals
Swap RBCU
Change Contactor/
Assembly

ABB ACH550-UH Specifications

General

Brand	ABB
Model	ACH550-UH
Category	Controller
Language	English