YASKAWA E-V Series User Manual page 228

8 Troubleshooting
8.2.2 Troubleshooting of Warnings
Warning
Warning Name
Display
Regenerative
Overload:
A.920
Warning before
the alarm A320
occurs
Dynamic Brake
Overload:
A921
Warning before
the alarm A.731
occurs
Data Setting
Warning 1
A.94A
(Parameter Num-
ber Error)
Data Setting
Warning 2
A.94B
(Out of Range)
Data Setting
Warning 3
A.94C
(Calculation
Error)
Data Setting
Warning 4
A.94D
(Parameter Size)
Data Setting
Warning 5
A.94E
(Latch mode
error)
Command
A.95A
Warning 1
Command
A.95B
Warning 2
Command
A.95D
Warning 4
Command
A.95E
Warning 5
Command
Warning 6
A.95F
(Undefined Com-
mand)
8-24
Situation at Warning
Occurrence
The power supply volt-
age is in excess of the Measure the power supply voltage.
specified range.
The external regenera-
tive resistance, servo
amplifier capacity, or Check the operating conditions or
regenerative resistor capacity using the capacity selection
capacity is insufficient software SigmaSize+, etc.
or a continuous regener-
ative state occurs.
Regenerative power
continuously flowed
Check the load on the servomotor dur-
back because negative
ing operation.
load was continuously
applied.
The 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.
Disabled parameter
–
number was used.
Attempted to send val-
ues outside the range to –
the command data.
Calculation result of set
–
value is incorrect.
Parameter size set in
–
command is incorrect.
Latch mode error is
–
detected.
Command sending con-
–
dition is not satisfied.
SERVOPACK received
–
unsupported command.
Command sending con-
dition for latch-related
–
commands is not satis-
fied.
Subcommand sending
condition is not satis- –
fied.
Undefined command
–
was sent.
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 SigmaSize+,
etc.
Reconsider the system including the
servo, machine, and operation condi-
tions.
Do not drive the motor with external
force.
• Reduce the servomotor reference
speed.
• Reduce the mass.
• Reduce the number of times of the
DB stop operation.
The SERVOPACK may be faulty.
Repair or replace the SERVOPACK.
Use the correct parameter number.
Set the value of the parameter within
the allowable range.
Set the value of the parameter within
the allowable range.
Use the correct parameter size.
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.
Send a command after command
sending condition is satisfied.
Do not sent an unsupported command.
Send a command after command
sending condition is satisfied.
Send a command after command
sending condition is satisfied.
Do not use an undefined command.
Corrective Actions