CP-7[732-742]-series Mechanical Reference(2.9E) - 第226页
AC Servopack Check List for Troubleshooting Alarm Alarm Name Status Cause Check Item Remedy A.Cb Encoder Echoback Error • Encoder wiring incorrect or poor connection . • Encoder defective. • Servopack defective. • Manual…
AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item Remedy
A.C5 Magnetic Polarity
Detection Error
• Power supply to the main circuit
is turned off.
• Incorrect encoder wiring.
• Encoder defective.
• Servopack defective.
• Check connections around the
power supply to the main circuit.
• Replace the motor.
• Replace the Servopack.
A.C8 Absolute Encoder
Clear Error and
Multiturn Limit
Setting Error
• Occurs at power ON.
• Occurs at encoder alarm
reset.
• Encoder defective.
• Servopack defective.
• Encoder defective.
• Servopack defective.
• Check the power supply to the
main circuit.
• Check the encoder wiring.
• Servopack defective.
• Check the encoder wiring or
connector insertion at the
encoder side.
• Encoder defective.
• Servopack defective.
• Check the encoder wiring.
• Servopack defective.
• Replace the motor.
• Replace the Servopack.
• Replace the motor.
• Replace the Servopack.
A.C6
A.C7
PA-, PB-phase
connection error
C-phase
connection error
• Occurs at power ON or
when motor is in operation.
• Servopack defective.
• Incorrect encoder wiring.
• Encoder defective.
• Replace the Servopack.
• Manually correct the encoder
wiring.
• Replace the motor.
NP1MT006E
A.C9 Encoder Communi-
cations Error
• Occurs at power ON or
during operation.
• Encoder wiring incorrect or poor
connection.
• Encoder defective.
• Servopack defective.
• Manually correct the encoder
wiring.
• Replace the motor.
• Replace the Servopack.
A.CA Encoder Parameter
Error
• Occurs at power ON.
• Occurs during operation.
• Encoder defective.
• Servopack defective.
• Encoder defective.
• Servopack defective.
• Replace the motor.
• Replace the Servopack.
• Replace the motor.
• Replace the Servopack.
Part 5 Chapter 2 Servo System Troubleshooting
Edition 2.6 5-2-10 CP-7 series Mechanical Reference
AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item Remedy
A.Cb Encoder Echoback
Error
• Encoder wiring incorrect or poor
connection .
• Encoder defective.
• Servopack defective.
• Manually correct the encoder
wiring.
• Replace the motor.
• Replace the Servopack.
A.d0 Position Error
Pulse Overflow
• Occurs at control power ON.
• Occurs during operation.
• Servopack defective.
• Parameter Pn505 value is 0.
• Imperfect motor wiring.
• Imperfect encoder wiring.
• Servopack defective.
• Load capacity is too large.
• Check the encoder wiring or
connector insertion at the
encoder side.
• Encoder defective.
• Servopack defective.
• Check the parameter
(overflow: Pn505).
• Check that the motor U, V and W
wiring is correct.
• Excessive load on servo.
• Check parameter Pn205.
• A.CC occurs even if the Pn205
setting is correct.
• Replace the Servopack.
• Correct the Pn505 setting
(Refer to the parameter list
supplied with the machine).
• Manually correct the motor
wiring.
• Manually correct the encoder
wiring.
• Replace the Servopack.
• Check for excessive load on
components driven by the servo.
A.CC Multiturn Limit
Disagreement
• Occurs at power ON.
• Occurs during operation.
• Occurs at power ON or
during operation.
• Servopack parameter is wrong.
• The multiturn limit has not been
set in the encoder.
• Servopack defective.
• Correct the Pn205 setting
(Refer to the parameter list
supplied with the machine).
• Execute the multiturn limit
setting change Fn013 when
the alarm occurs.
• Replace the Servopack.
NP1MT007E
A.F1 Power Line Open
Phase
• Occurs at control power ON.
• Occurs at main power ON or
when motor is in operation.
• Servopack defective.
• 3-phase power supply is not
connected.
• 3-phase power supply is
imbalanced.
• Servopack defective.
• Servopack defective.
• Check the power supply voltage.
• Check the power supply voltage.
• Servopack defective.
• Replace the Servopack.
• Manually correct the power
supply wiring.
• Correct the power supply
imbalance.
• Replace the Servopack.
Part 5 Chapter 2 Servo System Troubleshooting
Edition 2.6 5-2-11 CP-7 series Mechanical Reference
AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item Remedy
A.E0 SERCOS IF
Unset
• SERCOS IF CPU is set to
nonoperation (SERCOS IF
status (S or ST) LED (green)
does not come on).
• SERCOS IF does repeater
operation only.
• Problem with the SERCOS IF
connection.
• Base board defective. (SGDZ)
• SERCOS IF defective.
• Servopack defective.
• Set the switches 1 to 3 on the
servo amp according to the
electrical schematic.
• Reattach the connector between
the SGDH and the SERCOS IF.
• Reattach the connector between
the base board and the
SERCOS IF.
• Replace the base board.
(SGDZ)
• Replace the SERCOS IF.
• Replace the Servopack.
• Check that the connector
between the SGDH and the
SERCOS IF, or the base board
and the SERCOS IF (SGDZ) are
connected properly.
• Base board defective. (SGDZ)
• SERCOS IF defective.
(DPRAM (SGDH), CPU defective)
• Servopack defective.
(When using SGDZ, DPRAM
defective)
• Occurs at (10 sec. after)
control power on.
NP1MT008E
A.E2 WDC Error • Occurs after the
initialization of the
SERCOS communications.
• Fiber optics are cut.
• Power is off at one of the other
servo amps in the SERCOS
communications loop.
• Servo board is defective.
• SERCOS IF is defective.
• Check if the fiber optics connector
is detached or if the connection is
cut.
• Check if “bb” is flashing (SGDH)
at one of the servo amps within
the loop, or if its power is off.
• Check for power alarms such as
sudden stoppage.
• Check for alarms such as cuts in
servo board communications.
• SERCOS IF is defective.
• Manually readjust the fiber optics
cabling.
• Manually readjust the power and
power wiring.
• Improve the power source.
• Replace the Servopack.
• Replace the SERCOS IF.
A.E3 MST Loss • Occurs after the
initialization of the
SERCOS communications.
• Servo board is defective.
• SERCOS IF is defective.
• Check for alarms such as cuts in
servo board communications.
• SERCOS IF is defective.
• Replace the Servopack.
• Replace the SERCOS IF.
Part 5 Chapter 2 Servo System Troubleshooting
Edition 2.6 5-2-12 CP-7 series Mechanical Reference