ABB ACS800 Firmware Manual page 295

FAULT CAUSE
SPD MATCH FLT If speed error at set point is higher than SP
DEV LEV (Par. 75.02) or the actual speed
(FFF1)
change per second during acceleration/
3.33 CRANE FW bit 1
deceleration is less than SPD CHG PER SEC
(Par. 75.04) for a time longer than SPD
MATCH FLT TD (Par. 75.03) the drive will trip
for SPD MATCH FLT.
SC INV xx y Short circuit in inverter unit of several parallel
(2340) connected inverter modules. xx (1 ... 12) refers
to inverter module number and y refers to
3.05 FW 1 bit 0, 4.01 phase (U, V, W).
and 4.02
SHORT CIRC Short-circuit in motor cable(s) or motor
(2340)
3.05 FW 1 bit 0 and
4.02
Output bridge of converter unit is faulty.
SLOT OVERLAP Two option modules have the same connection
interface selection.
(FF8A)
START INHIBI Optional start inhibit hardware logic is
activated.
(FF7A)
3.03 bit 8
SUPPLY PHASE Intermediate circuit DC voltage is oscillating
due to missing mains phase, blown fuse or
(3130)
rectifier bridge internal fault.
3.06 FW 2 bit 0
Trip occurs when DC voltage ripple is 13% of
DC voltage.
SYNC FAULT Synchronisation error of Follower drive. The
error in position of the Follower drive is greater
(FFBE)
than the allowed limits.
3.33 CRANE FW
bit 4
TEMP DIF xx y Excessive temperature difference between
several parallel connected inverter modules. xx
(4380)
(1...12) refers to inverter module number and y
3.17 FW 5 bit 8 and
refers to phase (U, V, W).
4.01
Alarm is indicated when temperature difference
is 15 °C. Fault is indicated when temperature
difference is 20 °C
Excessive temperature can be caused, for
example, by unequal current sharing between
parallel connected inverters.
THERMAL MODE Motor thermal protection mode is set to DTC
for high-power motor.
(FF50)
WHAT TO DO
Check ramp times.
Check Torque and Current limit
settings.
Check motor and motor cable.
Check power semiconductors (IGBTs) of
inverter module.
Check motor and motor cable.
Check there are no power factor correction
capacitors or surge absorbers in motor cable.
Contact ABB representative.
Check connection interface selections in group
98 OPTION MODULES.
Check start inhibit circuit (AGPS board).
Check mains fuses.
Check for mains supply imbalance.
Check the Synchro error limits.
Check encoder connections.
Check cooling fan.
Replace fan.
Check air filters.
See parameter 30.05.
295
Fault tracing