Yaskawa Σ-V Series AC Servo Drives Rotational Motor MECHATROLINK-III - Manual (Page 274)

8.2 Warning Displays
8-19
8
Trou
blesh
ooting
A.911:
Vibration
Abnormal vibration was
detected at the motor
speed.
Check for abnormal noise from the
servomotor, and check the speed and
torque waveforms during operation.
Reduce the motor speed or reduce the
servo gain by using the function such
as one-parameter tuning.
The moment of inertia
ratio (Pn103) value is
greater than the actual
value or is greatly
changed. Check the moment of inertia ratio.
Set the moment of inertia ratio
(Pn103) to an appropriate value.
A.930:
Absolute
Encoder Battery
Error
(The absolute
encoder battery
voltage is lower
than the specified
value.)
(Only when an
absolute encoder
is connected.)
The battery connection
is incorrect.
Check the battery connection. Reconnect the battery.
The battery voltage is
lower than the specified
value 2.7 V.
Measure the battery voltage. Replace the battery.
A SERVOPACK fault
occurred.
−
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.94A
Data Setting
Warning 1
(Parameter Num-
ber Error)
Disabled parameter
number was used.
Refer to 8.3 Monitoring Communica-
tion Data on Occurrence of an Alarm
or Warning
to determine which
command was the cause of the
warning.
Use the correct parameter number.
A.94B
Data Setting
Warning 2
(Out of Range)
Attempted to send val-
ues outside the range to
the command data.
Refer to 8.3 Monitoring Communica-
tion Data on Occurrence of an Alarm
or Warning
to determine which
command was the cause of the
warning.
Set the value of the parameter within
the allowable range.
A.94C
Data Setting
Warning 3
(Calculation
Error)
Calculation result of set
value is incorrect.
Refer to 8.3 Monitoring Communica-
tion Data on Occurrence of an Alarm
or Warning
to determine which
command was the cause of the
warning.
Set the value of the parameter within
the allowable range.
A.94D
Data Setting
Warning 4
(Parameter Size )
Parameter size set in
command is incorrect.
Refer to 8.3 Monitoring Communica-
tion Data on Occurrence of an Alarm
or Warning
to determine which
command was the cause of the
warning.
Use the correct parameter size.
A.94E
Data Setting
Warning 5
(Latch mode
error)
Latch mode error is
detected.
Refer to 8.3 Monitoring Communica-
tion Data on Occurrence of an Alarm
or Warning
to determine which
command was the cause of the
warning.
Change the setting value of Pn850 or
the LT_MOD data for the
LTMOD_ON command sent by the
host controller to the proper value.
(When using the MECHATROLINK-
II-compatible profile.)
A.95A
Command
Warning 1
(Unsatisfying
Command)
Command sending con-
dition is not satisfied.
Refer to 8.3 Monitoring Communica-
tion Data on Occurrence of an Alarm
or Warning
to determine which
command was the cause of the
warning.
Send a command after command
sending condition is satisfied.
A.95B
Command
Warning 2
(Non-supported
Command)
SERVOPACK received
unsupported command.
Refer to 8.3 Monitoring Communica-
tion Data on Occurrence of an Alarm
or Warning to determine which
command was the cause of the
warning.
Do not sent an unsupported command.
(cont’d)
Warning
Number:
Warning Name
(Warning
Description)
Cause Investigative Actions Corrective Actions