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11-16
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
13
Main circuit power
supply undervoltage
Occurs when the servo 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.
• Check the power
supply capacity.
• Change the power
supply.
• Turn ON the power
supply.
• Extend the Momentary
Hold Time (Pn509).
Occurs when the power
supply is turned ON.
• Phase loss
• Correctly connect the phases
of the power supply voltage.
• Correctly connect the
single-phase.
• The main circuit power
supply is damaged.
• Control PCB damage.
• Replace the Servo
Drive.
14
Overcurrent
Occurs when the servo is
turned ON.
• Control PCB error
• Replace the Servo Drive.
• The motor power line is
short-circuited or
ground-faulted
between phases.
• Repair the short-circuited or
ground-faulted power line.
• Measure the insulation
resistance at the motor
and, if there is a short
circuit, replace the motor.
• Phase U, phase V, phase
W, and the ground are
wired incorrectly.
• Wire correctly.
• Motor winding is
burned out.
• Measure the winding
resistance, and if the
winding is burned out,
replace the motor.
• The relay for the
dynamic brake has
been deposited.
• Do not frequently input
the operation
command (RUN) input.
• Do not operate the
system by turning the
servo ON and OFF.
• Motor non-conformity
• Use a Servomotor that is
appropriate for use with
the Servo Drive.
• The pulse input timing
is too early.
• Wait at least 100 ms before
inputting pulses after
turning ON the operation
command (RUN).
• The resistor in the
Servo Drive is
abnormally
overheating.
• Reduce the ambient
temperature of the Servo
Drive to 55
C or lower.
• If the relay does not
click when the power
supply is turned ON,
replace the Servo Drive.
Alarm
number
Error conditions
Status when error
occurs
Cause
Measures
Содержание OMNUC G5 R88D-KN series
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