ABB ACH550 series User Manual

74 E-Clipse Bypass Configurations for ACH550 Drives
Diagnostics and Troubleshooting
3006 UNDERVOLTAGE Message only occurs if
drive is controlling the
motor and the power to
the bypass is removed
before the drive phases
back. Message will
appear in the fault log.
This message will only
appear when drive
contactor opens when
drive is operating
Loose J7 connector on
RBCU unit
Loose input wiring
Incoming power
problems
Check that J7
connector is firmly
seated in RBCU
Check tightness of
incoming connections
Check Parameter 0413
to view voltage level at
time of trip
Check upstream
protection
3008 DRIVE AI2 LOSS Only displayed when in
Supervisory mode.
Indicates that AI2 on the
drive has failed.
Check ACH550 manual
for AI2 loss
Check ACH550 manual
for AI2 loss
3009 MTR OVERLOAD Bypass opens on motor
overload conditions
defined in the drive
Drive Mode:
Bad Motor
Bad CT’s
Bad RBCU
Bypass mode:
Bad motor
Bad CT’s
Bad RBCU
Either mode:
low input voltage
Check if overload
condition exists
Drive Mode:
Refer to 550 manual
for proper
troubleshooting
techniques
Bypass Mode:
Check that J2
connector is firmly
seated in RBCU
Use clamp meter to
verify mtr current vs.
display in parameter
0101
Check input voltage
3010 INP PHASE A LOSS Fault will be generated
only when trying to
close the bypass
contactor and the
RBCU does not sense
voltage on Phase A
Loose J7 connector
Loose wiring on
Contactor assembly.
Blown upstream fuse
Check J7 connector
Check yellow wire on
input block
Check incoming
voltage, phase to
ground
3011 INP PHASE B LOSS Fault will be generated
only when trying to
close the bypass
contactor and the
RBCU does not sense
voltage on Phase B
Loose J7 connector
Loose wiring on
Contactor assembly.
Blown upstream fuse
Check J7 connector
Check black wire on
input block
Check incoming
voltage, phase to
ground
3012 INP PHASE C LOSS Fault will be generated
only when trying to
close the bypass
contactor and the
RBCU does not senses
voltage on Phase C
Loose J7 connector
Loose wiring on
Contactor assembly.
Blown upstream fuse
Check J7 connector
Check red on input
block
Check incoming
voltage, phase to
ground
Fault
Code
Fault Name In Panel Fault Possible Cause Corrective Action

ABB ACH550 series Specifications

General

Enclosure	IP21, IP55
Output Voltage	0 to Supply Voltage
Frequency Range	0 to 500 Hz
Control Method	Scalar control, vector control
Braking Chopper	Optional
Communication	Modbus RTU, Profibus, CANopen, Ethernet
Storage Temperature	-40°C to +70°C
Relative Humidity	5 to 95 % RH, non-condensing
Altitude	Up to 1000 m (derating above 1000 m)
Cooling Method	Air-cooled