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