Omron NJ Series Troubleshooting Manual page 138

3 Error Tables
Event code Event name
04A80000 hex Control
Power Sup-
ply Under-
voltage
04A90000 hex Overvoltage
04AA0000 hex Main Circuit
Power Sup-
ply Under-
voltage
(Undervolt-
age between
positive and
negative ter-
minals)
04AB0000 hex Main Circuit
Power Sup-
ply Under-
voltage (AC
Cutoff
Detected)
3-76
Meaning Assumed cause
The voltage • Power supply undervoltage. Or,
between the posi- the power supply voltage
tive and negative dropped because there was
terminals in the inrush current when the main
control power sup- power supply was turned ON.
ply converter
• A momentary power interrup-
dropped below the
tion occurred.
specified value.
• The Servo Drive failed.
The power supply • The voltage between the posi-
voltage exceeded tive and negative terminals in
the allowable input the control power supply con-
voltage range. verter exceeded the specified
value.
• The voltage was suddenly
increased by the phase
advance capacitor or the unin-
terruptible power supply (UPS).
• The Regeneration Resistor wir-
ing is broken.
• The External Regeneration
Resistor is not suitable.
• The Servo Drive failed.
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 interrup-
L1 and L3 for longer
tion occurred.
than the value
• A Servo Drive with 3-phase
specified for the
input specifications was oper-
Momentary Hold
ated with a single-phase power
Time. The voltage
supply.
between the posi-
• The Servo Drive failed.
tive 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 interrup-
L1 and L3 for longer
tion occurred.
than the value
• A Servo Drive with 3-phase
specified for the
input specifications was oper-
Momentary Hold
ated with a single-phase power
Time. The voltage
supply.
between the posi-
• The Servo Drive failed.
tive and negative
terminals in the
main power supply
converter dropped
below the specified
value while the
Servo was ON.
Level
Maj Prt Min Obs Info
S Cylinder-type
Motor Manual
(Cat. No. I576)
and Linear
Motor Manual
(Cat. No. I577)
S Same as
above.
S Same as
above.
S Same as
above.
NJ-series Troubleshooting Manual (W503)
Reference