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11-15
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
11-4 Troubleshooting
If an error occurs in the machine, determine the error conditions from the alarm displays and
operation status, identify the cause of the error, and take appropriate measures.
Error Diagnosis Using the Alarm Displays
Alarm
number
Error conditions
Status when error
occurs
Cause
Measures
11
Power supply
undervoltage
Occurs when the power is
turned ON.
• The power supply
voltage is low.
• Momentary power
interruption occurred.
• Power supply capacity
is insufficient.
• The power supply voltage
is reduced because the
main power supply is OFF.
• The main power supply
is not input.
• Increase the power
supply capacity.
• Change the power
supply.
• Turn ON the power
supply.
• Power supply capacity
is insufficient.
• Increase the power
supply capacity.
• Phase loss
• Connect the phases (L1,
L2, L3) of the power
supply voltage correctly.
• For single-phase, connect
to L1 and L3 correctly.
• The main circuit power
supply is damaged.
• Control PCB error.
• Replace the Servo
Drive.
12
Overvoltage
Occurs when the power
supply is turned ON.
• Main circuit power
supply voltage is out of
allowable range.
• Change the main circuit
power supply voltage to
within allowable range.
Occurs when the motor is
decelerating.
• Load inertia is too
large.
• Calculate the regenerative
energy and connect an
External Regeneration
Resistor with the required
regeneration absorption
capacity.
• Extend the deceleration time.
• Main circuit power
supply voltage is out of
allowable range.
• Change the main circuit
power supply voltage to
within allowable range.
Occurs during descent
(vertical axis).
• Gravitational torque is
too large.
• Add a counterbalance
to the machine to lower
gravitational torque.
• Reduce the descent speed.
• Calculate the regenerative
energy and connect an
External Regeneration
Resistor with the required
regeneration absorption
capacity.
Содержание OMNUC G5 R88D-KN series
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