YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
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Fault
This section gives information about some of the causes and possible solutions of faults.
You must use the Fault Reset operation to remove the fault before you can operate the
drive. Use the information in this table to remove the cause of the fault.
Code
Name
Causes
Possible Solutions
bAT
Keypad Battery Low
Voltage
The keypad battery voltage is
low.
Replace the keypad battery.
bCE
Bluetooth
Communication Fault
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
BrakingTransistor
Overload Fault
The duty cycle of the braking
transistor is high (the
regeneration power or repetition
frequency is high).
•
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 Selection =
Disable]
.
The braking transistor in the
drive is broken.
Replace the drive.
bUS
Option
Communication Error
The drive did not receive a
signal from the controller.
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.