Toshiba TOSVERT VF-AS3 Instruction Manual page 597

Trip Failure
Trip name
display code
OL2 000E Overload
(Motor) *
OL3 003E Overload
(IGBT)
OLr 000F Overload
(Braking
resistor) *
OP1 000A Overvoltage
(during
acceleration)
OP2 000B Overvoltage
(during
deceleration)
*Enable/Disable can be selected for trip with a parameter.
Detection factor
1) The motor is locked up.
2) Operation continues in low-speed
range.
3) The motor is overloaded.
4) The setting of the electronic thermal
does not match the motor
characteristic.
5) <Pt: V/f Pattern> does not match the
machinery.
1) While operating the low-speed range
(15 Hz or less) with high carrier
frequency, overload occurred.
2) Momentary power failure occurred, and
tried to start the rotating motor.
1) The braking rate is large.
2) The deceleration time is short.
1) Input voltage is high and showed
abnormal fluctuation.
2) Connection is made as the following
system.
• Power supply capacity is 500 kVA or
more.
• The power factor improvement
capacitor was opened/closed.
• Equipment is connected that uses
thyristor on the same system.
3) Momentary power failure occurred, and
tried to start the rotating motor.
1) The deceleration time is short and the
regenerative energy is large.
2) <F305: Overvoltage limit operation> is
set to "1: Disabled".
3) Input voltage is high and showed
abnormal fluctuation.
4) Connection is made as the following
system.
• Power supply capacity is 500 kVA or
more.
• The power factor improvement
capacitor was opened/closed.
• Equipment is connected that uses
thyristor on the same system.
13-7
E6582062
Measures
1) Check the machinery.
2), 3), and 4) Set the electronic thermal
according to the motor. <OLM: Motor
overload protection characteristic>,
<tHrA: Motor overload protection
current 1>, etc.
5) Set <Pt: V/f Pattern> according to the
machinery.
1)
• Reduce the load.
• Lower the carrier frequency. Or set
<F316: Carrier frequency control> to
"Valid decrease".
• Increase the output frequency.
2) Set <F301: Auto-restart>. Depending
on the characteristic of machinery,
<F302: Regenerative power ride-
through> = "1" is also effective.
• Increase the deceleration time. <dEC:
Deceleration time 1>, etc.
• Change the braking resistor (option) to a
large capacity, and set <F309: Braking
resistor capacity>.
1) Use within the power supply voltage
range. When no problem is found in the
input voltage, install an input AC
reactor (option).
2) Install an input AC reactor (option).
3) Set <F301: Auto-restart>. Depending
on the characteristic of machinery,
<F302: Regenerative power ride-
through> = "1" is also effective.
1)
• Increase the deceleration time. <dEC:
Deceleration time 1>, etc.
• When the regenerative energy is large,
install a braking resistor.
2) Change <F305> = "0", "2", and "3" to
enable the Overvoltage limit operation.
When the deceleration time is limited,
install a braking resistor (option).
3) Use within the power supply voltage
range. When no problem is found in the
input voltage, install an input AC
reactor (option).
4) Install an input AC reactor (option).
13. Trip information and measures
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