YASKAWA Σ-V Series User Manual page 271

8 Troubleshooting
8.2.2 Troubleshooting of Warnings
Warning
Warning Name
Display
Regenerative
Overload:
A.920
Warning before
the alarm A.320
occurs
Dynamic Brake
Overload:
A921
Warning before
the alarm A.731
occurs
Command
Option Module
A.94A
IF Data Setting
Warning 1
Command
Option Module
A.94B
IF Data Setting
Warning 2
Command
Option Module
A.94C
IF Data Setting
Warning 3
Command
Option Module
A.94D
IF Data Setting
Warning 4
Command
Option Module
A.94E
IF Data Setting
Warning 5
Command
Option Module
A.95A
IF Command
Warning 1
8-26
Situation at Warning
Occurrence
The power supply volt-
age exceeds the speci- Measure the power supply voltage.
fied range.
The external regenera-
tive resistance, SERVO-
PACK capacity, or Check the operating conditions or
regenerative resistor capacity using the capacity selection
capacity is insufficient software SigmaJunmaSize+, etc.
or a continuous regener-
ative state occurs.
Regenerative power
continuously flowed
Check the load on the linear servo-
back because negative
motor during operation.
load was continuously
applied.
The linear servomotor is
driven by an external Check the operating conditions.
force.
The moving energy at a Check the operating frequency of the
DB stop exceeds the DB DB with power consumed by DB
resistance capacity. resistance (Un00B).
A SERVOPACK fault
–
occurred.
An incorrect parameter
number was sent to the
SERVOPACK from the –
host controller or com-
mand option module.
Out-of-range data was
sent to the SERVO-
PACK from the host –
controller or command
option module.
Incorrect parameter data
was sent to the SERVO-
PACK from the host –
controller or command
option module.
The incorrect parame-
ter size was sent to the
–
SERVOPACK from the
host controller or com-
mand option module.
Incorrect latch mode
settings were sent to the
SERVOPACK from the –
host controller or com-
mand option module.
The host controller or
command option mod-
ule sent a operating
command when the
–
operation execution
conditions in the SER-
VOPACK had not been
satisfied.
Cause
Set the power supply voltage within
the specified range.
Change the regenerative resistance,
regenerative resistor capacity, or SER-
VOPACK capacity. Reconsider the
operating conditions using the capac-
ity selection software SigmaJunma-
Size+, etc.
Reconsider the system including the
servo, machine, and operation condi-
tions.
Do not drive the linear servomotor
with external force.
• Reduce the linear servomotor refer-
ence speed.
• Reduce the mass.
• Reduce the number of times of the
DB stop operation.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
Specify the correct parameter number.
Specify the value of the parameter
within the allowable range.
Specify the value of the parameter
within the allowable range.
Specify the correct parameter size.
Set a proper value for the latch mode.
Send a command after the operation
conditions are satisfied.
Corrective Actions