YASKAWA CIPR-GA50C Serie Manual De Instrucciones página 33

Code Name
bb Baseblock
CrST Cannot Reset
FWD/REV Run
EF
Command Input Error
EF1 - EF7 External Fault
(Terminal Sx)
GF Ground Fault
oC Overcurrent
YASKAWA TOMPC7106173UA GA500 Installation and Operation Instruction
Causes
An external baseblock
command was entered through
MFDI terminal S1 to S7, and
the drive output stopped as
shown by an external baseblock
command.
The drive received a fault reset
command when a Run
command was active.
A forward command and a
reverse command were input at
the same time for longer than
0.5 s.
MFDI terminal Sx caused an
external fault through an
external device.
External Fault [H1-xx = 20 to
2B] is set to MFDI terminal, but
the terminal is not in use.
Overheating caused damage to
the motor or the motor
insulation is not satisfactory.
The motor main circuit cable is
contacting ground to make a
short circuit.
An increase in the stray
capacitance of the cable and the
ground terminal caused an
increase in the leakage current.
There was a problem with the
drive hardware.
• The motor main circuit cable
is contacting ground to make
a short circuit.
• The load is too large.
• The acceleration time is too
short.
• The V/f pattern settings are
incorrect.
• The motor data is incorrect.
• A magnetic contactor was
switched at the output.
Possible Solutions
Examine the external sequence and
timing of the baseblock command input.
Turn off the Run command then de-
energize and re-energize the drive.
Examine the forward and reverse
command sequence and correct the
problem.
• Remove the cause of the external fault
to clear the external fault input in the
MFDI.
• Correctly set the MFDI.
Measure the motor insulation resistance,
and replace the motor if there is electrical
conduction or unserviceable insulation.
• Examine the motor main circuit cable
for damage, and repair short circuits.
• Measure the resistance between the
motor main circuit cable and the
ground terminal. If there is electrical
conduction, replace the cable.
• If the wiring length of the cable is
more than 100 m, decrease the carrier
frequency.
• Decrease the stray capacitance.
Replace the control board or the drive.
For information about replacing the
control board, contact Yaskawa or your
nearest sales representative.
• Replace damaged output cables or
motor cables.
• Repair damaged devices.
• Make sure that the parameter settings
are correct.
• Make sure that the sequence of the
electromagnetic contactor on the drive
output side is correct.
1 English
33