221
Alarm
code
Alarm type Possible alarm causes Solutions
AL.FbL
Closed loop
feedback loss
The parameters for feedback loss are
set improperly.
Modify the P14.26 setting
Feedback wire-break Rewiring
The reference of closed loop feedback
value is too low.
See the P14.01 setting and increase the feedback
reference
AL.EGL
External
reference
command lost
During the frequency main reference or
the torque command selection analog
current reference, the analog reference
signal is disconnected or too low (less
than 2mA).
Check the wiring or adjust the input type of the
reference signal
AL.24v
Control board
24V power
short circuit
Short circuit of P24 and terminal COM
Confirm whether the wiring of P24 and COM is
correct
The interface board circuit is damaged. Replace the interface board, seek for service support
AL.Fbo
Closed loop
feedback loss
The parameters for feedback loss are
set improperly.
Modify the P14.26 setting
AL.PIL
Wrong PID limit
value setting
The PID lower limit set value exceeds
PID upper limit set value
Adjust the PID upper / lower limit set value
Please carefully choose the fault alarm function; otherwise, the accident range extension, the human injury
and the property damage may be caused.
7.2 Operation exception and solutions
Table 7-3 Operation exception and solutions
Symptoms Conditions Possible causes Solutions
The
operation
panel has
no
response.
An individual key or
each key has no
response.
The locking function of the
operation panel takes effect.
In stop or running status, press the
ENTER/DATA key and retain pressure on it,
then press the V key successively for three
times, after that, you can unlock it.
Completely power off the drive and then power
it up
The wires of the operation panel
have poor contact.
Check the wires and perform the hot plug again
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