Omron OMNUC G5 R88M-K series User Manual page 409

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