ABB ACS 800 Series, Firmware Manual

Page: 295 / 340

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