Troubleshooting; Error Diagnosis Using The Alarm Displays - Omron OMNUC G5 R88M-K series User Manual

11-4 Troubleshooting

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