Toshiba VF-PS1 Instruction Manual page 297

(Continued)
Error
Problem
code
•The supply voltage between R, S
Undervoltage in
and T is under voltage.

main circuit •Trouble of rush current restraint
circuit or DC circuit fuse.
•The inverter is in the process of
retry.
 Retry
•A momentary stop occurred.
•The frequency setting signals at
Point setting
points 1 and 2 are set too close to

alarm
each other.
•This message is displayed when
pressing the STOP key while an
Clear enabling
error code is displayed.

indication
•Input terminal RES signal is ON
during trip display.
Emergency stop •The operation panel is used to stop
 enabling the operation in automatic control
indication or remote control mode.
Setting error •An error is found in a setting when
alarm data is reading or writing.
An error code
and data are
/
displayed
alternately twice
each.
•DC braking in process
DC braking

•Motor shaft fixing control is in
Shaft fixing in
process.

control
•It is displayed at setting the
parameter  to "".
In forced
 •"" and operation frequency is
operation
displayed alternately in operation of
forced fire-speed control.
•It is displayed at setting the
Setting error
parameter  to "" or "".

alarm
•No operation at setting "" or "".
•The digit number of the item
displayed, e.g., frequency, is in

Panel indication excess of the specified digit

overflow number.

(Number of overflowing digits is
indicated.)
Parameters in •Parameters are being initialized to
the process of default values.

initialization
•Auto-tuning 1 in process.
In auto-tuning 1

Auto-stop •The automatic stop function of
because of  is being performed.
continuous

operation at the
lower-limit
frequency
Momentary power •The deceleration stop function of
failure slowdown  (regenerative power ride-

stop prohibition through control) is activated.
function activated.
Display of •First and last data in the 
/
first/last data group.

items
•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
.
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.
Possible causes
•Measure the main circuit supply voltage.
If the voltage is at a normal level, the inverter
requires repairing.
•Make a service call.
•The inverter is normal if it restarts after several
tens of seconds. The inverter restarts
automatically. Be careful of the machine because it
may suddenly restart.
•Set the frequency setting signals at points 1 and 2
apart from each other.
•Press the STOP key again to clear the trip.
•Turn off the input terminal RES signal.
•Press the STOP key for an emergency stop. To
cancel the emergency stop, press any other key.
•Check whether the setting is made correctly.
•The message goes off in several tens of seconds if
no problem occurs. [Note]
•If the message disappears by stop command (ST
(terminal to which the ST function is assigned)-CC
open), it is normal.
•Continue to press the ENTER key for 2 seconds at
setting the parameter  to "".
•It is normal the alarm is gone out after the forced
fire-speed control operation.
•Please select the parameter  to other numbers
except "" and "".
•For indication of frequency, set multiplying rate
() lower. (Parameter setting that results in
overflow is of course valid.)
•Normal if the message disappears after a while
(several seconds to several tens of seconds).
•Normal if it the message disappears after a few
seconds.
•This function is deactivated when the command
frequency becomes 0.2Hz or more higher than the
lower-limit frequency (LL) or when a command for
stopping operation is entered.
•To restart operation, reset the inverter or input an
operation signal again.
•To exit from the group, press the MODE key.
•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.
M-5
E6581386
Remedies
13