ABB ACS800 Series - Page 178

Fault tracing
166
POINTER ERROR
(FFD0)
Source selection (pointer) parameter points to
non existing parameter index.
Check source selection (pointer) parameter
settings.
->POWEROFF!
(FF39)
Inverter type (e.g. sr0025_3) has been
changed. Inverter type is usually changed at
factory or during drive implementation.
Switch control board power off to validate
inverter type change.
PP OVERLOAD
(5482)
Excessive IGBT junction to case temperature.
This can be caused by excessive load at low
frequencies (e.g. fast direction change with
excessive load and inertia).
Increase ramp time.
Reduce load.
REPLACE FAN
(4280)
Running time of inverter cooling fan has
exceeded its estimated life time.
Replace fan.
Reset fan run time counter 01.44.
START INHIBI
(FF7A)
02.15 AW 1 bit 0
Optional start inhibit hardware logic is
activated.
Check start inhibit circuit (AGPS board).
START INTERL
(FF8D)
No Start Interlock signal received. Check circuit connected to Start Interlock input
on RMIO board.
SYNCRO SPEED
(FF87)
Value of motor nominal speed set to parameter
99.08 is not correct: Value is too near
synchronous speed of motor. Tolerance is
0.1%. This warning is active only in DTC mode.
Check nominal speed from motor rating plate
and set parameter 99.08 exactly accordingly.
TEMP DIF xx y
(4380)
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 e.g. by
unequal current sharing between parallel
connected inverters.
Check cooling fan.
Replace fan.
Check air filters.
THERMISTOR
(4311)
02.15 AW 1 bit 02
(programmable
Fault Function
30.04…30.05)
Motor temperature is excessive. Motor thermal
protection mode selection is THERMISTOR.
Check motor ratings and load.
Check start-up data.
Check thermistor connections to digital input
DI6.
T MEAS ALM
(FF91)
02.15 AW 1 bit 06
Motor temperature measurement is out of
acceptable range.
Check connections of motor temperature
measurement circuit. See chapter Program
features for circuit diagram.
UNDERLOAD
FF6A)
02.16 AW 2 bit 01
(programmable
Fault Function
30.13)
Motor load is too low due to e.g. release
mechanism in driven equipment.
Check for problem in driven equipment.
Check Fault Function parameters.
Warning Cause What to Do