E-Clipse Bypass Configurations for ACH550 Drives 73
Diagnostics and Troubleshooting
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
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