Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 79

4. STARTUP
4.3 Servo amplifier display
On the servo amplifier display (3-digit, 7-segment display), check the status of communication with the servo
system controller at power-on, check the axis number, and diagnose a fault at occurrence of an alarm.
4.3.1 Scrolling display
The statuses of the A-axis and the B-axis are displayed alternately. The statuses of the both axes can be
checked.
(1) Normal display
When there is no alarm, the statuses of the A-axis and the B-axis are displayed alternately. In this example,
the A-axis is set as the first axis, and the B-axis as the second axis.
(2) Alarm display
When there is an alarm, the alarm number (two digits) and the alarm detail (one digit) are displayed
following the status display. In this example, the encoder initial communication error 1 (16.1) is occurring in
the A-axis, and the overcurrent (32.2) is occurring in the B-axis.
A-axis status display
Status display Axis number
(1 digit) (2 digits)
"F": Indicates that an alarm is occurring.
A-axis status display
Status display Axis number
(1 digit)
"b" : Indicates ready OFF/servo OFF status.
"C" : Indicates ready ON/servo OFF status.
"d" : Indicates ready ON/servo ON status.
After 2s
A-axis alarm number
display
After 2s
B-axis status display
After 2s
(2 digits)
After 2s
B-axis status display
After 2s
4 - 6
After 2s
B-axis alarm number
display
Alarm number Alarm detail
(2 digits) (1 digit)