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35
Type
Display on
5-digit LED
Protective function
Corrective action
Radiator fin
overheat
protection
When the temperature of the
radiator fin exceeds approx.
100
℃
, the temperature sensor is
activated to trip the inverter.
Examine the cooling fan and the
ambient temperature.
CPU error
Trips the inverter if the
micro-computer causes an error.
The microcomputer operation may
be interfered by external noise.
Locate and remove the noise
source or reduce the noise level.
Self-diagnosis
trip
Trips upon changing in certain
parameter, e.g. [
Operation
mode selection].
This is not an error. After trip is
canceled, the updated result will
become effective.
Communication
error
If communication is interrupted for
a period of, or longer than [
Protocol timeout] as many times
as, or more frequently than [
Communication retry frequency], it
is judged as communication error.
Check the communication host for
abnormal condition.
④
External forced
trip
Trips the inverter when [
I5
function selection] or [
I6
function selection] is set to
external forced trip and I5/I6 is not
connected to [G].
After short-circuiting “I5/I6” and
“G”, reset the trip.
After short-circuiting the “I5” or “I6”
terminal and the “G” terminal,
cancel the trip.
When a thermal protector is
connected, examine the cause of
overload.
Note) If the LED display shows a cause of trip and “
” alternately after
the trip is reset, the cuase of trip has not been removed yet. Remove the
cause of trip first, and then reset the trip again.
Note)
The cooling fan driving sequence is shown below.
Power supply
Run command
Fan
While the inverter trips, the fan is driven only for two minutes.
ON
OFF
Running
Halted
Driven
Halted
2 min.
2 min.
