ABB ACH550 series User Manual

80 E-Clipse Bypass Configurations for ACH550 Drives
Diagnostics and Troubleshooting
Alarm Listing
The following table lists the alarms by code number and describes each.
Alarm
Code
Alarm Name In Panel Alarm Possible Cause Corrective Action
4001 INP PHASE A LOSS Alarm will occur in
drive mode. In bypass,
alarm will occur if
bypass contactor has
not closed. Unit will
trip on Fault 3010 if the
bypass contactor is
closed
Loose J8 connector
Loose wiring on
Contactor assembly.
Blown upstream fuse
Check J8 connector
Check yellow wire on
input block
Check incoming
voltage, phase to
ground
4002 INP PHASE B LOSS Alarm will occur in
drive mode. In bypass,
alarm will occur if
bypass contactor has
not closed. Unit will
trip on Fault 3011 if the
bypass contactor is
closed
Loose J8 connector
Loose wiring on
Contactor assembly.
Blown upstream fuse
Check J8 connector
Check black wire on
input block
Check incoming
voltage, phase to
ground
4003 INP PHASE C LOSS Alarm will occur in
drive mode. In bypass,
alarm will occur if
bypass contactor has
not closed. Unit will
trip on Fault 3012 if the
bypass contactor is
closed
Loose J8 connector
Loose wiring on
Contactor assembly.
Blown upstream fuse
Check J8 connector
Check red wire on
input block
Check incoming
voltage, phase to
ground
4004 AUTO TRANSFER Message is displayed
when the drive faults
and the bypass
switches to bypass
mode as configured in
Parameter 1608
Drive fault Check drive
4005 EXT COMM ERR Time between fieldbus
messages has
exceeded timeout
interval set with
parameter 3005
Incorrect
Communication
settings in Group 51 &
53.
Poor Connections
Noise on
Communication Line
Check Group 51& 53
Tighten Connections
Check Communication
Cable Grounding
4006 Selected by PAR 1620:
RUN ENABLE
DAMPER END SWITCH
VALVE OPENING
PRE-LUBE CYCLE
Alarm will occur when
start order is given and
the “RUN Enable” is
not present
Run Enable condition
is not satisfied.
Bad 24v supply
Bad digital input
Check 24 Volts on
RBCU unit
Check for 24 volts on
respective DI when
condition is satisfied
Check Parameter 0103
for status of digital
input
4007 PCB TEMP RBCU unit reached
181 degrees
Fahrenheit, 83 degrees
Celsius
Cabinet cooling has
failed
Ambient conditions too
high
Bad RBCU unit
Stop drive and let cool
down and restart
Add additional cooling
Replace RBCU

ABB ACH550 series Specifications

General

Brand	ABB
Model	ACH550 series
Category	Controller
Language	English