ABB ACS800 Firmware Manual page 286

286
WARNING CAUSE
START HIGH The Start command is active when the drive is
powered ON. The Start command remains ON
(FFB3)
after a fault or fast stop has occurred and a
reset is done.
START INTERL No Start Interlock signal received.
(FF8D)
SYNCRO SPEED Value of motor nominal speed set to parameter
99.08
(FF87)
synchronous speed of motor. Tolerance is
3.18 AW 5 bit 1
0.1%. This warning is active only in DTC mode.
TEMP DIF xx y Excessive temperature difference between
several parallel connected inverter modules.
(4380)
xx (1...12) refers to inverter module number
4.01 FAULTED INT
and y refers to phase (U, V, W).
INFO
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.
THERMISTOR Motor temperature is excessive. Motor thermal
protection mode selection is THERMISTOR.
(4311)
3.08 AW 1 bit 2
(programmable
Fault Function
30.04 ... 30.05)
T MEAS ALM Motor temperature measurement is out of
acceptable range.
(FF91)
3.08 AW 1 bit 6
UNDERLOAD Motor load is too low due to, For example,
release mechanism in driven equipment.
(FF6A)
3.09 AW 2 bit 1
(programmable
Fault Function
30.13)
ZERO POS WARN Start command with incorrect Zero position
input.
(FFFB)
Fault tracing
is not correct: Value is too near
WHAT TO DO
Start command should be made OFF and then
can be made ON for a start sequence.
Check the circuit connected to the Start
Interlock input on the RMIO board.
Check nominal speed from motor rating plate
and set parameter 99.08
Check cooling fan.
Replace fan.
Check air filters.
Check motor ratings and load.
Check start-up data.
Check thermistor connections to digital input
DI6.
Check connections of motor temperature
measurement circuit. See chapter
features for circuit diagram.
Check for problem in driven equipment.
Check Fault Function parameters.
Check for Zero position DI.
exactly accordingly.
Program