Omron NJ Series

3 Error Tables
3-110
NJ-series Troubleshooting Manual (W503)
04AC0000 hex Overcurrent The current flowing
through the con-
verter exceeded the
specified value.
• A short-circuit, line-to-ground
fault, contact failure, or insula-
tion failure occurred on the U, V,
or W motor line.
• The Servo Drive failed.
• The relay for the dynamic brake
has been welded due to fre-
quent Servo ON/OFF opera-
tions.
• Motor windings are burned out.
• The Servomotor is not suitable
for the Servo Drive.
• The command input timing is
the same as or earlier than the
Servo ON timing.
S Cylinder-type
Motor Manual
(Cat. No. I576)
and Linear
Motor Manual
(Cat. No. I577)
04AD0000 hex IPM Error The current flowing
through the con-
verter exceeded the
specified value.
• A short-circuit, line-to-ground
fault, contact failure, or insula-
tion failure occurred on the U, V,
or W motor line.
• The Servo Drive failed.
• The relay for the dynamic brake
has been welded due to fre-
quent Servo ON/OFF opera-
tions.
• Motor windings are burned out.
• The Servomotor is not suitable
for the Servo Drive.
• The pulse input timing is the
same as or earlier than the
Servo ON timing.
S Same as
above.
04AE0000 hex Regenera-
tion Tr Error
The Servo Drive
regeneration drive
Tr is faulty.
• The Servo Drive regeneration
drive Tr is faulty.
S Same as
above.
04AF0000 hex Encoder
Phase-Z
Error
A missing serial
incremental
encoder phase-Z
pulse was detected.
• The encoder is faulty. S Cylinder-type
Motor Manual
(Cat. No. I576)
04B00000 hex Encoder CTS
Signal Error
A missing serial
incremental
encoder CTS signal
logic error was
detected.
• The encoder is faulty. S Same as
above.
04B10000 hex Node
Address Set-
ting Error
The node address
that was read from
the rotary switches
was not between 00
and 99.
• The Servo Drive failed. S Cylinder-type
Motor Manual
(Cat. No. I576)
and Linear
Motor Manual
(Cat. No. I577)
04B20000 hex Other Errors The Servo Drive
malfunctioned, or
an error occurred in
the Servo Drive.
• The control circuit malfunc-
tioned temporarily due to
excess noise.
• The Servo Drive’s self-diagno-
sis function detected an error in
the
Ser
vo Drive.
S Linear Motor
Manual (Cat.
No. I577)
08080000 hex Encoder
Communica-
tions Discon-
nection Error
A disconnection
was detected
because communi-
cations between the
encoder and the
Servo Drive were
stopped more fre-
quently than the
specified value.
• The encoder is not wired cor-
rectly.
S Cylinder-type
Motor Manual
(Cat. No. I576)
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info