YASKAWA UAK series User Manual page 263

Alarm
Alarm Name
Display
A.EF2 Local Bus Drive WD Error
Local Bus Communications
A.EF4
Error
Converter AC Power Supply
A.F1A
Open Phase
Converter AC Power Supply
A.F2A
Frequency Error
Converter AC Power Supply
A.F2B Frequency Detection Time
Exceeded
A.F30 External DB Error
Converter AC Power Supply
A.F3B
Phase Sequence Error
Meaning
A local bus watchdog alarm occurred in the SERVOPACK.
An error occurred during local bus communications.
The voltage was low for one second in phase L1, L2, or L3
when the main power supply was turned ON.
The power supply frequency is faulty.
The detection of the AC power supply input frequency was
not completed within the set time.
There is an error in the connection to the external dynamic
brake.
An error occurred in the AC power supply phase sequence.
11.2 Alarm Displays
(cont'd)
Motor Stop Alarm
Method Reset
Gr.2 N/A
Gr.2 Available
Gr.1 Available
Gr.1 Available
Gr.1 Available
Gr.1 N/A
Gr.1 Available
1
11-9
1