YASKAWA SGD7S-****20A Series - Page 433

12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
12-14
A.070:
Motor Type
Change Detected
(The connected
motor is a differ-
ent type of motor
from the previ-
ously connected
motor.)
A Rotary Servomotor
was removed and a
Linear Servomotor
was connected.
–
Set the parameters for a
Linear Servomotor and
reset the motor type
alarm. Then, turn the
power supply to the
SERVOPACK OFF and
ON again.
page 12-48
A Linear Servomotor
was removed and a
Rotary Servomotor
was connected.
–
Set the parameters for a
Rotary Servomotor and
reset the motor type
alarm. Then, turn the
power supply to the
SERVOPACK OFF and
ON again.
page 12-48
A.080:
Linear Encoder
Pitch Setting
Error
The setting of Pn282
(Linear Encoder Scale
Pitch) has not been
changed from the
default setting.
Check the setting of
Pn282.
Correct the setting of
Pn282.
page 5-17
A.0b0:
Invalid Servo ON
Command Alarm
The SV_ON (Servo
ON) command was
sent from the host
controller after a util-
ity function that turns
ON the Servomotor
was executed.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. Or, execute a
software reset.
page 6-48
A.100:
Overcurrent
Detected
(An overcurrent
flowed through
the power tran-
sistor or the heat
sink overheated.)
The Main Circuit
Cable is not wired
correctly or there is
faulty contact.
Check the wiring. Correct the wiring.
page 4-26
There is a short-circuit
or ground fault in a
Main Circuit Cable.
Check for short-circuits
across Servomotor
phases U, V, and W, or
between the ground
and Servomotor phases
U, V, and W.
The cable may be short-
circuited. Replace the
cable.
There is a short-circuit
or ground fault inside
the Servomotor.
Check for short-circuits
across Servomotor
phases U, V, and W, or
between the ground
and Servomotor phases
U, V, or W.
The Servomotor may be
faulty. Replace the Servo-
motor.
There is a short-circuit
or ground fault inside
the SERVOPACK.
Check for short-circuits
across the Servomotor
connection terminals U,
V, a nd W o n th e
SERVOPACK, or
between the ground
and terminals U, V, or
W.
The SERVOPACK may be
faulty. Replace the
SERVOPACK.
The regenerative
resistor is not wired
correctly or there is
faulty contact.
Check the wiring. Correct the wiring.
page 4-22
The dynamic brake
(DB, emergency stop
executed from the
SERVOPACK) was
frequently activated,
or a DB overload
alarm occurred.
Check the power con-
sumed by the DB resis-
tor to see how
frequently the DB is
being used. Or, check
the alarm display to see
if a DB overload alarm
(A.730 or A.731) has
occurred.
Change the SERVOPACK
model, operating meth-
ods, or the mechanisms
so that the dynamic brake
does not need to be used
so frequently.
–
Continued on next page.
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction Reference