CP-7[732-742]-series Mechanical Reference(2.9E) - 第221页

AC Servopack Check List for Troubleshooting Alarm Alarm Name Status Cause Check Item Remedy A.30 Regenerative Error Detected • Occurs at control power ON. • Occurs at main power ON. • Servopack defective. • Wiring to reg…

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AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item Remedy
A.02 Parameter Break-
down
• Occurs at power ON. • Servopack power supply
malfunctions.
• Servopack defective.
• Does AC power supply
sometimes provide 30V to 60V?
• Restore the AC power supply.
• Replace the Servopack.
A.03 Main Circuit
Detector Error
• Occurs at power ON or
during operation
• Servopack power supply
malfunctions.
• Servopack defective.
• Does AC power supply
sometimes provide 30V to 60V?
• Restore the AC power supply.
• Replace the Servopack.
A.04 Parameter Setting
Error
• Occurs at power ON or
during operation.
• Servopack defective.
• SERCOS IF defective.
• Replace the Servopack.
• Replace the SERCOS IF.
A.05 Combination Error • Occurs at power ON. • Servopack capacity does not
match motor capacity.
• Servopack defective.
• Check the combination of
Servopack capacity and motor
capacity.
• Servopack defective.
• Match the Servopack capacity
to the motor capacity.
• Replace the Servopack.
• Replace the motor.
A.10 Overcurrent • Occurs at control power
ON.
• Overcurrent occurs at
main power ON or during
motor operation.
• Servopack defective.
• Servopack detects overcurrent
by mistake.
• Failure in electronic overload
thermal relay forced reset for
overload alarm
• Grounding: Grounding in motor
or motor cable wiring.
• Shortcircuit in load: Load short-
circuit in motor or motor cable
• Shortcircuit in load: Load short-
circuit in main circuit in
Servopack.
• Improper connection between
phases U, V and W and ground,
shortcircuit between phases or
incorrect ground wiring.
• Use a tester to check between
phases U, V and W.
• DB circuit or regenerative circuit
resistor or wiring grounding.
• Replace the Servopack.
• Replace the motor or manually
correct the motor cable to
eliminate grounding.
• Replace the motor or manually
correct the motor cable to
eliminate grounding.
• Replace the Servopack.
NP1MT001E
Part 5 Chapter 2 Servo System Troubleshooting
Edition 2.6 5-2-5 CP-7 series Mechanical Reference
AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item Remedy
A.30 Regenerative
Error Detected
• Occurs at control power ON.
• Occurs at main power ON.
• Servopack defective.
• Wiring to regenerative resistor
defective.
• Servopack defective.
• Incorrect regenerative resistor
wiring.
• Regenerative resistor
disconnected.
• Check the wiring to regenerative
resistor.
• Servopack defective.
• Check that wiring to the
regenerative resistor is proper.
• Check the regenerative
resistance value.
• Replace the Servopack.
• Check the regenerative value
and correct the wiring.
• Replace the Servopack.
• Manually correct the wiring of the
external regenerative resistor.
• Replace the external
regenerative resistor.
A.32 Regenerative
overload
• Occurs at control power ON.
• Occurs at normal operation.
• Servopack defective.
• Parameter Pn600 set value is
not correct when a regenerative
resistor is mounted externally.
• Servopack defective.
• Check that parameter Pn600 set
value is correct.
• Servopack defective.
• Replace the Servopack.
• Set parameter Pn600 correctly.
• Replace the Servopack.
NP1MT002E
A.40 Overvoltage • Occurs at control power ON.
• Occurs at main power ON
or when motor is in operation.
• Servopack defective.
• Excessive power supply voltage.
• Servopack defective.
• Check the AC power supply
voltage. (Is there excessive
voltage variation?)
• Servopack defective.
• Replace the Servopack.
• Set the AC power supply voltage
to a value in the normal setting
range.
• Replace the Servopack.
A.41 Undervoltage • Occurs at control power ON.
• Occurs at main power ON
or when motor is in operation.
• Servopack defective.
• Power supply voltage is
excessively small.
• Servopack defective.
• Power supply variation is large
and power supply is reduced.
• Check the AC power supply
voltage. (Pay attention to
different power supply applied.)
• Servopack defective.
• Check that a momentary power
failure has not occurred.
• Replace the Servopack.
• Set the AC power supply voltage
to a value in the normal setting
range.
• Replace the Servopack.
Part 5 Chapter 2 Servo System Troubleshooting
Edition 2.6 5-2-6 CP-7 series Mechanical Reference
AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item Remedy
A.51 Overspeed • Occurs at control power ON.
• Occurs at main power ON
or when motor is in
operation.
• Servopack defective.
• Incorrect motor wiring.
• Incorrect encoder wiring.
• Servopack defective.
• Check that the motor rotating
direction is correct (phases U, V
and W wiring).
• Servopack defective.
• Replace the Servopack.
• Manually correct the motor
wiring.
• Manually correct the encoder
wiring.
• Replace the Servopack.
A.71
A.72
Overload for
Instantaneous
Maximum Load
Overload for
Continuous
Minimum Load
• Occurs at control power ON.
• Occurs at main power ON
or when motor is in
operation.
• Servopack defective.
• Incorrect motor wiring.
(imperfect wiring or connection)
• Incorrect encoder wiring.
(imperfect wiring or connection)
• Servopack defective.
• Check that the connnection is
correct and that the motor wiring
does not have an open phase.
• Servopack defective.
• Excessive load on servo.
• Replace the Servopack.
• Manually correct the motor
wiring.
• Manually correct the encoder
wiring.
• Replace the Servopack.
• Check for excessive load on
components driven by the servo.
NP1MT003E
A.73 Dynamic Brake
Overload
• Servopack defective. • Replace the Servopack.
A.74 Overload of
in-rush Current
Limit Resistor
• Occurs at control power ON.
• Occurs at main circuit
power supply ON/OFF.
• Servopack defective.
• The allowable frequency of
in-rush current limit resistor at
power ON/OFF is exceeded.
• Servopack defective.
• Check that the allowable
frequency of in-rush current limit
resistor (5 times/min) is not
exceeded.
• Check that the Servopack fan is
operating.
• Check that the fan for the control
board is operating.
• Check the ambient temperature
of the Servopack exceeds 35 °C.
• Excessive load on servo.
• Replace the Servopack.
• Reduce the main circuit power
supply ON/OFF frequency to
5 times/min.
• Replace the Servopack.
A.7A Heat Sink
Overheated
• Occurs at main power ON
or when motor is in
operation.
• Servopack defective.
• Ambient temperature of the
Servopack exceeds 35 °C.
• Replace the Servopack.
• Set the ambient temperature of
the Servopack to 35 °C or less.
• Check for excessive load on
components driven by the servo.
Part 5 Chapter 2 Servo System Troubleshooting
Edition 2.6 5-2-7 CP-7 series Mechanical Reference