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E6581528
M-6
13
(Continued)
Error
code
Problem Possible causes Remedies
/
Display of
first/last data
items
•First and last data in the
group.
•To exit from the group, press the MODE key.
During learning
•Learning for brake sequence
operation or light-load high-speed
operation is currently in progress.
•To cancel learning, suspend it and set learning
parameters to .
Brake sequence
learning error
•Braking operation is not performed
normally.
•The load is too heavy.
•There are some operation errors.
•Brake signal output (, ) is not assigned to
the control output terminal.
•The brake function mode selection parameter
() is not set.
• Learning is performed while the load is lifted
Light-load
high-speed
learning
operation error
•There are some errors in the
operation for learning for light-load
high-speed operation.
•Check whether the learning operation for light-load
high-speed operation is performed correctly.
⇒ Refer to 6.16.
Light-load
high-speed
learning
overload error
•Learning operation for light-load
high-speed operation is performed
while the load is lifted.
•Motor constants (, ,
to ) are not
entered correctly.
•Check the load.
•Check the motor constant setting.
Key operation
permitted
temporarily
•This message appears if the
ENTER key is pressed and held
down for 5 seconds or more when
key operation is prohibited by
.
•When this message is displayed, all the keys are
operational. To prohibit key operation again, turn
off the inverter and then turn it back on.
Note: In the case of DC injection breaking ON/OFF function is selected for an input terminal; if “” disappears as a
result of open-circuit between the terminal and CC, it is normal.
[Pre-alarm display]
Error
code
Description Possible causes Remedies
Overcurrent pre-alarm Same as (Overcurrent) Same as (Overcurrent)
Overvoltage pre-alarm
Achieving PBR operation
level
Same as (Overvoltage)
blink while PBR is operating is not
an error.
Same as (Overvoltage)
blink while PBR is operating is not
an error.
Overload pre-alarm Same as and (Overload) Same as and (Overload)
Overheat pre-alarm Same as (Overheat) Same as (Overheat)
Communication error •Various transmission errors occur
when computer is linked up with
inverter system.
•Various transmission errors occur in
inverter to inverter communication
(slave side). Time-out or trip in master
side.
•For measures to correct various kinds
of data transmission errors, refer to
the instruction manual for the
communications device used
specified in Section 6.42.
•Check the master inverter.
If two or more problems arise simultaneously, one of the following alarms appears and blinks.
, , , , ……,
The blinking alarms , , , , are displayed in this order from left to right.