YASKAWA GA700 Technical Manual page 338

6.4 Faults
Code Name
Note:
• The drive detects this error if the Run command or frequency reference is assigned to the option card.
• Do a Fault Reset to clear the fault.
• If the drive detects this error, the drive will operate the motor as specified by the stopping method set in F6-01 [Communication Error
Selection].
Code Name
CE Modbus Communication
Error
Note:
• The drive detects this error if it does not correctly receive control data for the CE detection time set to H5-09 [CE Detection Time].
• Do a Fault Reset to clear the fault.
• If the drive detects this error, the drive will operate the motor as specified by the stopping method set in H5-04 [Communication Error
Stop Method].
Code Name
CF Control Fault
Note:
• The drive detects this error if the torque reference is more than the torque limit for 3 seconds or longer while the drive ramps to stop.
• Do a Fault Reset to clear the fault.
338
Causes
The option card is damaged.
Causes
The communications cable wiring is
incorrect.
There is a short circuit or the
communications cable is not connected.
Electrical interference caused a
communication data error.
Causes
Motor parameters are set incorrectly
The torque limit is too low.
The load inertia is too big.
The drive is trying to ramp to stop a
machine that cannot do ramp to stop or
on a machine for which deceleration is
not necessary.
The motor and drive are connected
incorrectly.
Line-to-line Resistance Tuning is not
done.
The drive received a Run command
while the motor was coasting.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Possible Solutions
If the fault continues and the wiring is correct,
replace the option card.
Possible Solutions
Correct wiring errors.
• Repair short circuits and connect cables.
• Replace the defective communications cable.
• Examine the control circuit lines, main circuit
lines, and ground wiring, and decrease the
effects of electrical interference.
• Make sure that a magnetic contactor is not the
source of the electrical interference, then use a
Surge Protective Device if necessary.
• Use only the recommended cables or other
shielded line. Ground the shield on the controller
side or the drive input power side.
• Isolate the communication wiring from drive
power lines, and install a noise filter to the input
side of the power supply for communication.
• Decrease the effects of electrical interference
from the controller.
Possible Solutions
Correctly set the motor parameters and do Auto-
Tuning again.
Adjust L7-01 to L7-04 [Torque Limit].
• Adjust C1-02, C1-04, C1-06, and C1-08
[Deceleration Time].
• Set the frequency reference to the minimum
output frequency, and stop the Run command
when the drive stops deceleration.
Correctly set b1-03 [Stopping Method Selection].
Correct wiring errors.
Do Stationary Auto-Tuning for Line-to-Line
Resistance.
• Examine the sequence and input the Run
command after the motor fully stops.
• Set b3-01 = 1 [Speed Search at Start Selection =
Enabled].