Megmeet MV600 Series - Operation Exception and Solutions

232
Alarm
code
Alarm type Possible alarm causes Solutions
AL.rLy1
Abnormal
contactor
The grid voltage is too low. Check the grid voltage
The contactor is damaged.
Replace the contactor of the main circuit, seek for
service support
The power-up buffer resistance is
damaged.
Replace the buffer resistance, seek for service
support
The control circuit is damaged. Seek for service support
Input phase loss Check the input R.S.T. wiring
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