Omron R88D-KN series User Manual page 494

Appendicies
Event code Event name
04AA0000 hex Main Circuit
Power
Supply
Undervoltage
(Undervoltag
e between
positive and
negative
terminals)
04AB0000 hex Main Circuit
Power
Supply
Undervoltage
(AC Cutoff
Detected)
04AC0000 hex Overcurrent
A-94
Meaning Assumed cause
If the Undervoltage • Insufficient power supply
Error Selection capacity
(3508 hex) is set to
• The electromagnetic contactor
1, a momentary
in the main circuit power supply
power interruption
was tripped.
occurred between
• A momentary power
L1 and L3 for longer
interruption occurred.
than the value
• A Servo Drive with 3-phase
specified for the
input specifications was
Momentary Hold
operated with a single-phase
Time. The voltage
power supply.
between the
• The Servo Drive failed.
positive and
negative terminals
in the main power
supply converter
dropped below the
specified value
while the Servo was
ON.
If the Undervoltage • Insufficient power supply
Error Selection
capacity
(3508 hex) is set to
• The electromagnetic contactor
1, a momentary
in the main circuit power supply
power interruption
was tripped.
occurred between
• A momentary power
L1 and L3 for longer
interruption occurred.
than the value
• A Servo Drive with 3-phase
specified for the
input specifications was
Momentary Hold
operated with a single-phase
Time. The voltage
power supply.
between the
• The Servo Drive failed.
positive and
negative terminals
in the main power
supply converter
dropped below the
specified value
while the Servo was
ON.
The current flowing • A short-circuit, line-to-ground
through the fault, contact failure, or
converter exceeded insulation failure occurred on
the specified value. the U, V, or W motor line.
• The Servo Drive failed.
• The relay for the dynamic brake
has been welded due to
frequent Servo ON/OFF
operations.
• Motor windings are burned out.
• The motor is not suitable for the
Servo Drive.
• The command input timing is
the same as or earlier than the
Servo ON timing.
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
Level
Maj Prt Min Obs Info
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Reference
page A-108
page A-109
page A-110