Minor Faults/Alarms - YASKAWA GA700 Technical Manual

6.5

Minor Faults/Alarms

This section gives information about the causes and possible solutions when a minor fault or alarm occurs. Use
the information in this table to remove the cause of the minor fault or alarm.
Code Name
AEr Station Address Setting
Error
Note:
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
bAT Keypad Battery Low
Voltage
Note:
• If detected, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will switch ON.
• Set o4-24 [bAT Detection Selection] to enable/disable bAT detection.
Code Name
bb Baseblock
Note:
The drive will not output an alarm signal for this alarm.
Code Name
bCE Bluetooth Communication
Error
Note:
• The drive detects this error when using the Bluetooth LCD keypad to operate the drive with a smart device.
• If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• Use o2-27 [bCE Detection selection] to enable and disable bCE detection.
Code Name
boL Braking Transistor
Overload
Note:
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
bUS Option Communication
Error
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Causes
The node address for the option card is
not in the permitted setting range.
Causes
The keypad battery voltage is low.
Causes
An external baseblock command was
entered through MFDI terminal S1 to
S8, and the drive output stopped as
shown by an external baseblock
command.
Causes
The smart device with DriveWizard
Mobile is too far from the keypad.
Radio waves from a different device are
causing interference with
communications between the smart
device and keypad.
Causes
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.
Causes
The communications cable wiring is
incorrect.
There is a short circuit or the
communications cable is not connected.

6.5 Minor Faults/Alarms

Possible Solutions
• For CC-Link communication, set F6-10 [CC-
Link Node Address] correctly.
• For MECHATROLINK communication, set F6-
20 [MECHATROLINK Station Address]
correctly.
• For CANopen communication, set F6-35
[CANopen Node ID Selection] correctly.
Possible Solutions
Replace the keypad battery.
Possible Solutions
Examine the external sequence and timing of the
baseblock command input.
Possible Solutions
Use the smart device within 10 m (32.8 ft.) from
the keypad.
Note:
bCE can occur when the smart device is 10 m or
nearer to the keypad depending on the
specifications of the smart device.
Make sure that no device around the keypad uses
the same radio bandwidth (2400 MHz to 2480
MHz), and prevent radio interference.
Possible Solutions
• Install a braking unit (CDBR series).
• Install a regenerative converter.
• Increase the deceleration time.
Set L8-55 = 0 [Internal DB TransistorProtection =
Disable].
Replace the drive.
Possible Solutions
Correct wiring errors.
• Repair short circuits and connect cables.
• Replace the defective communications cable.
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