6.5 Minor Faults/Alarms
362 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Code Name Causes Possible Solutions
Electrical interference caused a
communication data error.
• 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 recommended cables or other shielded
line. Ground the shield on the controller side or
the drive input power side.
• Separate 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.
The option card is incorrectly installed
to the drive.
Correctly install the option card to the drive.
The option card is damaged. If the fault continues and the wiring is correct,
replace the option card.
Note:
• The drive detects this error if the Run command or frequency reference is assigned to the option card.
• If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• 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 Causes Possible Solutions
CALL Serial Comm Transmission
Error
The communications cable wiring is
incorrect.
Correct any wiring errors.
There is a short circuit or the
communications cable is not connected.
• Repair short circuits and connect cables.
• Replace the defective communications cable.
There was a programming error on the
controller side.
Examine communications at start-up and correct
programming errors.
The communications circuitry is
damaged.
• Do a self-diagnostics check.
• If the problem continues, replace the control
board or the drive. For information about
replacing the control board, contact Yaskawa or
your nearest sales representative.
The termination resistor setting for
MEMOBUS/Modbus communications
is incorrect.
On the last drive in a MEMOBUS/Modbus
network, set DIP switch S2 to the ON position to
enable the termination resistor.
Note:
• The drive detects this error if it does not correctly receive control data from the controller when energizing the drive.
• If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
CE Modbus Communication
Error
The communications cable wiring is
incorrect.
Correct wiring errors.
There is a short circuit or the
communications cable is not connected.
• Repair short circuits and connect cables.
• Replace the defective communications cable.
Electrical interference caused a
communication data error.
• 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 recommended cables or other shielded
line. Ground the shield on the controller side or
the drive input power side.
• Separate 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.
To Next Page
Loading...
