ABB ACH550-VCR - Page 69

ACH550 Installation, Operation and Maintenance Manual 69
ACH550 E-Clipse Bypass
3018 MAX CYCLE
FAULT
Supervisory Mode only.
Declared if bypass
contactor is closed by
supervisory control 16
times within a 1 hour
period.
High and low levels of
hysteresis band are too
tight
Check parameters
3202-3205. Increase
time delays on
parameters 3204 and
3205
3019 DRIVE LINK FAULT Supervisory Mode
Only. Fault generated if
RS-485 link between
drive and bypass stops
communicating.
Bad cable/connection
between drive and
bypass.
Communication
improperly set in drive
Parameter 9802.
Application Macro
improperly set in drive
parameter 9902.
Proper seating of cable
in drive and
RBCU(connector J3)
Check drive parameter
9802 (Modbus) and
9902 (E-Clipse)
Check drive Group 53
Follow DriveLink
recovery procedure
3020 PHASE SEQ Sequence of 3 phase
voltage input is such
that bypass operation
will result in motor
rotation opposite of
drive forward operation.
Phase sequence
unknown at time of
wiring
Swap any two of the
three input wires to the
bypass unit
3021 PH A CURR FBK Fault is generated
when current in Phase
A is detected and the
bypass contactor is
open
Loose CT connection
Bad RBCU
Bad CT
Check J2 connector for
proper seating
Check connector on
Current Assembly
Replace RBCU
Replace RCSA unit
3022 PH C CURR FBK Fault is generated
when current in Phase
C is detected and the
bypass contactor is
open
Loose CT connection
Bad RBCU
Bad CT
Check J2 connector for
proper seating
Check connector on
Current Assembly
Replace RBCU
Replace RCSA unit
3023 BYP COIL
SHORTED
Coil characteristics are
checked only on power
up and coil current is
greater than allowable
values
Shorted contactor coil
Shorted/damaged
cable
Bad RBCU
Replace RBCU
Replace RCSA unit
3024 DRV COIL
SHORTED
Coil characteristics are
checked only on power
up and coil current is
greater than allowable
values
Shorted contactor coil
Shorted/damaged
cable
Bad RBCU
Replace RBCU
Replace RCSA unit
3027 INVALID SUB ASM Contactor assembly as
recorded in the RBCU
unit does not match
drive information
communicated via 485
link
RBCU unit from a
different size bypass
used to replace a
defective RBCU.
Parameters not
matched after
Firmware change.
Contact ABB at
1-800-HELP-365
Option 4
Fault
Code
Fault Name In
Panel
Fault Possible Cause Corrective Action