YASKAWA SGD7S series Product Manual page 164

Alarm Number:
Possible Cause
Alarm Name
A Rotary Servomotor
was removed and a
A.070:
Linear Servomotor
Motor Type
was connected.
Change Detected
(The connected
motor is a differ-
ent type of motor
from the previ-
A Linear Servomotor
ously connected
was removed and a
motor.)
Rotary Servomotor
was connected.
The setting of Pn282
A.080:
(Linear Encoder Scale
Linear Encoder
Pitch) has not been
Pitch Setting
changed from the
Error
default setting.
The SV_ON (Servo
ON) command was
A.0b0: sent from the host
controller after a util-
Invalid Servo ON
ity function that turns
Command Alarm
ON the Servomotor
was executed.
The Main Circuit
Cable is not wired
correctly or there is
faulty contact.
There is a short-circuit
or ground fault in a
Main Circuit Cable.
There is a short-circuit
or ground fault inside
the Servomotor.
A.100:
Overcurrent
Detected
(An overcurrent
flowed through
There is a short-circuit
the power tran-
or ground fault inside
sistor or the heat
the SERVOPACK.
sink overheated.)
The regenerative
resistor is not wired
correctly or there is
faulty contact.
The dynamic brake
(DB, emergency stop
executed from the
SERVOPACK) was
frequently activated,
or a DB overload
alarm occurred.
Confirmation
Set the parameters for a
Linear Servomotor and
reset the motor type
– alarm. Then, turn the
power supply to the SER-
VOPACK OFF and ON
again.
Set the parameters for a
Rotary Servomotor and
reset the motor type
– alarm. Then, turn the
power supply to the SER-
VOPACK OFF and ON
again.
Check the setting of Correct the setting of
Pn282. Pn282.
Turn the power supply to
the SERVOPACK OFF and
–
ON again. Or, execute a
software reset.
Check the wiring. Correct the wiring.
Check for short-circuits
across Servomotor
The cable may be short-
phases U, V, and W, or
circuited. Replace the
between the ground
cable.
and Servomotor phases
U, V, and W.
Check for short-circuits
across Servomotor
The Servomotor may be
phases U, V, and W, or
faulty. Replace the Servo-
between the ground
motor.
and Servomotor phases
U, V, or W.
Check for short-circuits
across the Servomotor
connection terminals U, The SERVOPACK may be
V, and W on the SER- faulty. Replace the SER-
VOPACK, or between VOPACK.
the ground and termi-
nals U, V, or W.
Check the wiring. Correct the wiring.
Check the power con-
sumed by the DB resis-
Change the SERVOPACK
tor to see how
model, operating meth-
frequently the DB is
ods, or the mechanisms
being used. Or, check
so that the dynamic brake
the alarm display to see
does not need to be used
if a DB overload alarm
so frequently.
(A.730 or A.731) has
occurred.
9.1 Alarm Displays
9.1.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
page 9-40
page 9-40
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