Toshiba TOSVERT VF-S9 Instruction Manual page 186

(Continued)
Communication
Error code
No.
* 1D Small-current opera-
tion trip
22h Ground fault trip
11h Emergency stop
15h
Main unit RAM fault
16h
Main unit ROM fault
17h
CPU fault trip
18h Remote control error
29h Inverter type error
12h EEPROM fault
28h Auto-tuning error
* With a parameter, you can choose between trip-on and -off.
[Alarm information]
Error code
ST terminal OFF
(Note 1)
Undervoltage in main
circuit
Retry in process
Frequency point set-
ting error
Clear command ac-
ceptable
Emergency stop
command accept-
able
Setting error alarm /
An error code and
data are displayed
alternately twice
each.
(Continued overleaf)
Problem Possible causes
• The output current falls to the low-current
detection level during operation.
• A ground fault occurs in the output cable
or the motor.
• During automatic operation or remote op-
eration, a stop command is entered from
the operation panel or a remote input de-
vice.
• The control RAM is defective.
• The control ROM is defective.
• The control CPU is defective.
• An error arises during remote operation.
• The control circuit board (main circuit
board or drive circuit board) is replaced.
• A data writing error occurs.
• Check the settings of the motor parameters
• Check that the motor is not two or more sizes smaller in capacity than the inverter.
• Check that the inverter output cable is not too thin.
• Check that the motor is not running.
• Check that the motor is a three-phase inductive motor.
Each message in the table is displayed to give a warning but does not cause the inverter to
trip.
Problem Possible causes
• The ST-CC circuit is opened.
• The supply voltage between R, S and T is
under voltage.
• The inverter is in the process of retry.
• A momentary stop occurred.
• The frequency setting signals at points 1
and 2 are set too close to each other.
• This message is displayed when pressing
the STOP key while an error code is dis-
played.
• The operation panel is used to stop the
operation in automatic control or remote
control mode.
• An error is found in a setting when data is
reading or writing.
M-3
E6580757
Remedies
• Enable
(low-current detection pa-
rameter).
• Check whether the detection level is set
properly to the system.
( and )
• If no error is found in the setting, make a
service call.
• Check the cable and the motor for ground
faults.
• Reset the inverter.
• Make a service call.
• Make a service call.
• Make a service call.
• Check the remote control device, cables,
etc.
• Make a service call.
• Turn off the inverter, then turn it on again.
If it does not recover from the error, make
a service call.
to .
Remedies
• Close the ST-CC circuit.
• Measure the main circuit supply voltage.
If the voltage is at a normal level, the
inverter requires repairing.
• 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.
• Press the STOP key for an emergency
stop.
To cancel the emergency stop, press any
other key.
• Check whether the setting is made cor-
rectly.
13