108
e-38
AI1 signal
Loss
AI1 analog signal level
is lower than the level
set by the parameter
f422.
Check signal on AI1
to eliminate the cause
of signal loss.
Confirm whether
f422 is correctly set.
e-39
Inverter
inside
communic
ation error
communicatio
n error between
keyboard and
control board
CPU
Ccontact
manufacturer to
maintain
e-41
Input
phase
failure
The input side
of the main
circuit is phase
failure.
The inside
component of
the inverter is in
abnormal state.
Determine the cause
of input phase failure
and correct it.
Set f405 = 0.
e-42
Output
phase
failure
The output
side of the main
circuit is phase
failure.
Determine the cause
of input phase failure
(such as poor
connection, open
circuit of output or
open circuit of motor
winding) and correct it.
Set f406 = 0.
Code of
fault
Type of fault
Possible cause
Measures
(troubleshooting)
e-43
Emergency
Use the
Perform fault reset.
