4-6
Data
display
Cause and actionDescription
uU
flashing
Main circuit undervoltage
(UV)
The DC voltage of the main
circuit dropped to or below the
undervoltage detection level.
→ Check whether the voltage of power supply to the Inverter is
proper. If not, impose the proper voltage.
→ Check whether the power input line to the Inverter is broken or
disconnected. If the power input line is broken or
disconnected, replace the power input line or connect the
power input line properly.
→ Check the terminal block screws for looseness. If they are
loose, tighten them securely.
%U
flashing
Main circuit overvoltage
(OV)
The DC voltage of the main
circuit exceeded the
overvoltage detection level
while the Inverter had no
output.
→ Check whether the voltage of power supply to the Inverter is
proper. If not, impose proper voltage.
%h1
flashing
Heat sink overheat (OH1)
The temperature of the heat
sink exceeded approximately
90°C and n034 was set to 3
for the continuous operation of
the Inverter.
The ambient temperature is too high.
→ Install a cooling fan or air conditioner.
A heat generating object exists near the Inverter.
→ Remove the object.
%h3
flashing
Inverter overheat warning
(OH3)
Inverter overheat warning as
multi-function input was
received by the Inverter.
→ Turn OFF inverter overheat warning.
%l3
flashing
Overtorque (OL3)
A current exceeding the value
set with n075 flowed for more
than the time set with n076.
→ Check whether the n075 and n076 settings are appropriate.
→ Check the machine use status and eliminate the cause of the
problem.
bb
flashing
Remote baseblock (bb)
The remote baseblock
command input as
multi-function input was
received by the Inverter.
→ Turn OFF the remote baseblock command input.
call
flashing
Operation mode error
(CALL)
The setting of n002 was
improper.
The parameter n002 was set to a value other than 0 to 3.
→ Reset n002.
%pe3 Multi-function input setting
error
The multi-function input
settings of n035 to n039 were
improper.
Make sure that the values of n035 to n039 are different from one
another.
Make sure that a single search mode is selected with n035 to
n039 set to 15 or 16.
Make sure that both set values 22 and 25 are selected with n035
to n039.
%pe5 V/f data setting error
Optional V/f pattern settings
were improper.
Reset the optional V/f pattern to satisfy the following condition.
→ n017 x n015 x n014 x n012
Operation Chapter 4
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