TOYODenki VFDB2009 Series, Operation Manual

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Chapter 9
Trouble shooting
9.1 Protect display
When abnormalities occur in VFDB2009 dynamic brake system and the protection operates, DB operation is
stopped immediately, 86A points of contact are operated, 86A of LED lights up, and the contents of
protection are displayed on the display for indication of DB unit. The list of the protection displays of DB unit
is shown in the following table.
Table 9.1 List of protect display
Protect
display Protect content Discription of protect opertaion
FF1 Abnormalities of main circuit) A braking resistor is un-connecting.
、
IGBT failure
FF2 Cooling fin overheating) When the temperature of IGBT becomes beyond a predetermined
value
FF3 Abnormalities of preset value When the preset values memorized by RAM or EEPROM are
abnormalities
FF4 Over voltage of 200V series When D.C. voltage exceeds 450V in 200V series at the time of a
setup
9.2 Trouble shooting
When operation is correctly impossible or the problem of a certain abnormalities having arisen during
operation occurs, please investigate a cause by the following check methods and cope with it. When the
problem applicable to neither of the next measure arises, please contact to agency of our company, or our
company.
Table 9.2 List of trouble shootng
Protect
display Cause Measure
FF1 A braking resistor is un-connecting. A braking resistor is connected between P and PR
.
IGBT breaks down DB unit is exchanged.
Each of power-supply-voltage system
change connector CN2 and CN3 is
un-inserting.
A connector is inserted. (Refer to "5.2.1 change of
power supplyvoltage.")
FF2
Ambient air temperature is high.
The environment where DB unit is installed checks
in conformity in specification.
(Refer to "2.1 common specification.")
There is not an enough cooling space.
Please secure a regular cooling space.
(Please refer to "3.1 installation." )
The direction of installation is not
suitable.
Please install in the regular direction of
installation. (Please refer to "3.1 installation." )
A fan motor is failure or a defect of
operation. (only VFDB2009-200F)
Please exchange a fan motor.
It is not applied to which of the
above-mentioned to .
DB unit, a braking resistor, and a thermal relay are
reselected. (Refer to "Chapter 6 Selection of
peripheral device.")
FF3
The write-in defect to EEPROM occurs by
an excessive noise.
DB unit takes noise measures and a preset value
is initialized.
FF4 At the time of inverter use of 400Vseries,
setup of DB unit is 200Vseries.
A setup of a power supply voltage of DB unit
and a power supply voltage change connector
are checked. (Refer to "5.2.1 change of power
supplyvoltage.")
Power supply voltage is rising unusually.
Please check an input power supply.