Toshiba TOSVERT VF-S11 Instruction Manual page 86

[Alarm information] Each message in the table is displayed to give a warning but does not cause the inverter to trip.
Error code






/

/











Note) When the ON/OFF function is selected for DC braking (DB), using the input terminal selection parameter, you can judge
the inverter to be normal if "" disappears when opening the circuit between the terminal and CC.
[Prealarm display]
Overcurrent alarm

Overvoltage alarm

Overload alarm

Overheat alarm

Problem
• The ST-CC circuit is opened.
ST terminal OFF
Undervoltage in main • The supply voltage between R, S and T is
circuit
under voltage.
Retry in process • The inverter is n the process of retry.
• A momentary stop occurred.
Frequency point • The frequency setting signals at points 1
setting error alarm and 2 are set too close to each other.
Clear command • This message is displayed when pressing
acceptable
the STOP key while an error code is
displayed.
Emergency stop • The operation panel is used to stop the
command acceptable
operation in automatic control or remote
control mode.
Setting error alarm / • An error is found in a setting when data is
An error code and
reading or writing.
data are displayed
alternately twice
each.
Display of first/last • The first and last data item in the 
data items
data group is displayed.
• DC braking in process
DC braking
Shaft fixing control • Motor shaft fixing control is in process.
Flowing out of • The number of digits such as frequencies
excess number of is more than 4.
digits
(The upper digits have a priority.)
Momentary power • The slowdown stop prohibition function
failure slowdown
set with  (momentary power
stop prohibition failure ride-through operation) is
function activated.
activated.
Auto-stop because of • The automatic stop function selected with
continuous operation  was activated.
at the lower-limit
frequency
Parameters in the • Parameters are being initialized to default
process of
values.
initialization
Operation panel key • The same key is held down for more than
fault 20 seconds.
• Some key is faulty.
Auto-tuning • Auto-tuning in process
Same as  (overcurrent)
Same as  (overvoltage)
Same as  and  (overload)
Same as  (overheat)
Possible causes
• Close the ST-CC circuit.
• Measure the main circuit supply voltage.
• The inverter is normal if it restarts after
• Set the frequency setting signals at points
• Press the STOP key again to clear the
• Press the STOP key for an emergency
• Check whether the setting is made
• Press MODE key to exit the data group.
• The message goes off in several tens of
• Normal if the message disappears when
• Lower the frequency free unit
• To restart operation, reset the inverter or
• To deactivate the automatic stop function,
• Normal if the message disappears after a
• Check the operation panel.
• Normal if it the message disappears after
85
E6581160
Remedies
If the voltage is at a normal level, the
inverter requires repairing.
several tens of senconds.
The inverter restarts automatically. Be
careful of the machine because it may
suddenly restart.
1 and 2 apart from each other.
trip.
stop.
To cancel the emergency stop, press any
other key.
correctly.
seconds if no problem occurs. Note)
a stop command is entered (or the
operation command is canceled).
magnification .
input an operation signal again.
increase the frequency command above
the lower-limit frequency (LL) + 0.2 Hz or
turn off the operation command.
while (several seconds to several tens of
seconds).
a few seconds.
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