Toshiba TOSVERT VF-nC3E Instruction Manual page 237

[Alarm information]
Error code

A-05

A-17

A-30

ATN

CLR

DB

E-49


E-50

E-51

E1

E2

E3
EASY/
／
STD


EOFF

ERR1
/
HEAD/

END
/
HI/

LO

INIT

LSTP
12

MOFF
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.
(Continued overleaf)
Each message in the table is displayed to give a warning but does not cause the inverter to trip.
Problem
 An attempt was made to operate at a
Output frequency upper
limit
frequency higher than 10 times the base
frequency ( or ).
 The RUN or STOP key is held down for
Operation panel key
alarm
more than 20 seconds.
 The RUN or STOP key is faulty.
 The carrier frequency() setting is
Carrier frequency
higher than 4kHz when = 2 or 3.
setting error alarm
 Auto-tuning in process
Auto-tuning
 This message is displayed when pressing
Clear command
acceptable
the STOP key while an error code is
displayed.
 DC braking in process
DC braking
 The input terminal was switched to sink
External power supply
input
logic of external power supply input
logic switching check
(+24V).
alarm
 The input terminal was switched to source
Source logic switching
check alarm
logic.
 The input terminal was switched to sink
Sink logic switching
check alarm
logic.
 The number of digits such as frequencies
Flowing out of excess
number of digits
is more than 4.
(The upper digits have a priority.)
 The EASY key was pushed in the
Switching display of
Easy setting mode /
standard monitor mode.
Standard setting mode
 The operation panel is used to stop the
Emergency stop
command acceptable
operation in automatic control or remote
control mode.
 The frequency setting signals at points 1
Frequency point setting
error alarm
and 2 are set too close to each other.
 The first and last data item in the 
Display of first/last data
items
data group is displayed.
 An error is found in a setting when data is
Setting error alarm /
An error code and data
reading or writing.
are displayed
alternately twice each.
 Parameters are being initialized to default
Parameters in the
process of initialization
values.
 The automatic stop function selected with
Auto-stop because of
 was activated.
continuous operation at
the lower-limit
frequency
 The supply voltage between R, S and T is
Undervoltage in main
circuit
under voltage.
Possible causes
 Operate at a frequency within 10 times the
 Check the operation panel.
 Check the parameter  and .
 Normal if it the message disappears after a
 Press the STOP key again to clear the trip.
 The message goes off in several tens of
 Check the wiring, and set the appropriate
 Check to make sure that the wiring is
 Lower the frequency free unit magnification
 When easy is displayed, setting mode
 Press the STOP key for an emergency
 Set the frequency setting signals at points 1
 Press MODE key to exit the data group.
 Check whether the setting is made
 Normal if the message disappears after a
 This function is cancelled, when frequency
 Measure the main circuit supply voltage
L-4
E6582233
Remedies
base frequency.
few seconds.
seconds if no problem occurs. Note)
logic.
normal, and reset or turn the power off and
then back on again. This switches the logic.
.
becomes easy setting mode. When std
is displayed, it becomes standard setting
mode.
stop.
To cancel the emergency stop, press any
other key.
and 2 apart from each other.
correctly.
while (several seconds to several tens of
seconds).
reference reaches LL+0.2Hz or operation
command is OFF.
(between the terminal PA and PC).
If the voltage is at a normal level, the
inverter requires repairing.