YASKAWA CIPR-GA50UВ001AJ Series Installation & Primary Operation page 142

15 Troubleshooting
Code Name
Bluetooth
bCE
Communication Error
Braking Transistor
boL
Overload
Option
bUS
Communication Error
142
Causes
The smartphone or tablet with
DriveWizard Mobile installed is
too far from the keypad.
Radio waves from a different
device are causing interference
with the communication
between the smartphone or
tablet and keypad.
The duty cycle of the braking
transistor is high (the
regeneration power or repetition
frequency is high).
You enabled the protective
function for the braking
transistor when you have a
regenerative converter.
The braking transistor in the
drive is broken.
The communications cable
wiring is incorrect.
There is a short-circuit in the
communications cable or the
communications cable is not
connected.
Electrical interference caused a
communication data error.
YASKAWA TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
Possible Solutions
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 or nearer to the
keypad depending on the
specifications of the smartphone or
tablet.
Make sure that no device around the
keypad uses the same radio bandwidth
(2400 MHz to 2480 MHz), and prevent
radio interference.
• Install a regenerative converter.
• Increase the deceleration time.
Set L8-55 = 0 [Internal DB
TransistorProtection Selection =
Disable].
Replace the drive.
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.
• 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.