YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
143
Code
Name
Causes
Possible Solutions
The option card is incorrectly
installed to the drive.
Correctly install the option card to the
drive.
The option card is damaged.
If the alarm continues and the wiring is
correct, replace the option card.
CALL
Serial Comm
Transmission Error
The communications cable
wiring is incorrect.
Correct wiring errors.
There is a short-circuit in the
communications cable or the
communications cable is not
connected.
•
Repair the short-circuited or
disconnected portion of the cable.
•
Replace the defective
communications cable.
A programming error occurred
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.
CE
Modbus
Communication Error
The communications cable
wiring is incorrect.
Correct wiring errors.
There is a short-circuit in the
communications cable 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 the 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.