Toshiba TOSVERT VF-AS1 Instruction Manual page 317

(Continued)
Error
code
/

 During learning




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





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.
13
Problem Possible causes
•First and last data in the 
Display of
first/last data group.
items
•Learning for brake sequence
operation or light-load high-speed
operation is currently in progress.
•Braking operation is not performed
normally.
Brake sequence
•The load is too heavy.
learning error
•There are some operation errors.
Light-load •There are some errors in the
high-speed operation for learning for light-load
learning high-speed operation.
operation error
•Learning operation for light-load
Light-load high-speed operation is performed
high-speed while the load is lifted.
•Motor constants (, ,
learning
 to ) are not
overload error
entered correctly.
•This message appears if the
Key operation ENTER key is pressed and held
permitted down for 5 seconds or more when
temporarily
key operation is prohibited by
.
Description
Same as  (Overcurrent)
Overcurrent pre-alarm
Same as  (Overvoltage)
Overvoltage pre-alarm
 blink while PBR is operating is not
Achieving PBR operation
level an error.
Same as  and  (Overload)
Overload pre-alarm
Same as  (Overheat)
Overheat pre-alarm
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.
•To exit from the group, press the MODE key.
•To cancel learning, suspend it and set learning
parameters  to .
•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
•Check whether the learning operation for light-load
high-speed operation is performed correctly.
⇒ Refer to 6.16.
•Check the load.
•Check the motor constant setting.
•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.
Possible causes
Same as  (Overcurrent)
Same as  (Overvoltage)
 blink while PBR is operating is not
an error.
Same as  and  (Overload)
Same as  (Overheat)
•For measures to correct various kinds
•Check the master inverter.
M-6
E6581528
Remedies
Remedies
of data transmission errors, refer to
the instruction manual for the
communications device used
specified in Section 6.42.