
150
YASKAWA
TOEPC71061737D GA800 DRIVE INSTALLATION & PRIMARY OPERATION
Code
Name
Causes
Possible Solutions
bb
Baseblock
An external baseblock command was entered through
one of the MFDI terminals Sx, and the drive output
stopped as shown by an external baseblock command.
Examine the external sequence and timing of the baseblock
command input.
bCE
Bluetooth Communication Error
The smartphone or tablet with DriveWizard Mobile
installed is too far from the keypad.
Use the smartphone or tablet 10 m (32.8 ft.) or nearer to the keypad.
Note:
bCE
can occur when the smartphone or tablet is 10 m (32.8 ft)
or nearer to the keypad depending on the specifications of the
smartphone or tablet.
Radio waves from a different device are causing
interference with communications between the
smartphone or tablet and keypad.
Make sure that no device around the keypad uses the same radio
bandwidth (2400 MHz to 2480 MHz), and prevent radio
interference.
boL
Braking Transistor Overload
The duty cycle of the braking transistor is high (the
regeneration power or repetition frequency is high).
•
Install a braking unit (CDBR series).
•
Install a regenerative converter.
•
Increase the deceleration time.
You enabled the protective function for the braking
transistor when you have a regenerative converter.
Set
L8-55 = 0 [Internal DB TransistorProtection = Disable]
.
The braking transistor in the drive is broken.
Replace the drive.
bUS
Option 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.
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.
bUSy
Busy
You set the drive to use MEMOBUS/Modbus
communications to change parameters, but you used
the keypad to change parameters.
Use MEMOBUS/Modbus communications to enter the enter
command, then use the keypad to change the parameter.
You tried to change a parameter while the drive was
changing setting.
Wait until the process is complete.
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.
There is damage to the communications circuitry.
•
Do a self-diagnostics check.
•
If the problem continues, replace the control board or the drive.
Contact Yaskawa or your nearest sales representative to replace
the control board.
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.