Omron NJ Series Troubleshooting Manual page 139

Event code Event name
04AC0000 hex Overcurrent
04AD0000 hex IPM Error
04AE0000 hex Regenera-
tion Tr Error
04AF0000 hex Encoder
Phase-Z
Error
04B00000 hex Encoder CTS
Signal Error
04B10000 hex Node
Address Set-
ting Error
04B20000 hex Other Errors
08080000 hex Encoder
Communica-
tions Discon-
nection Error
NJ-series Troubleshooting Manual (W503)
Meaning Assumed cause
The current flowing • A short-circuit, line-to-ground
through the con- fault, contact failure, or insula-
verter exceeded the tion failure occurred on the U, V,
specified value. 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.
The current flowing • A short-circuit, line-to-ground
through the con- fault, contact failure, or insula-
verter exceeded the tion failure occurred on the U, V,
specified value. 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.
The Servo Drive • The Servo Drive regeneration
regeneration drive drive Tr is faulty.
Tr is faulty.
A missing serial • The encoder is faulty.
incremental
encoder phase-Z
pulse was detected.
A missing serial • The encoder is faulty.
incremental
encoder CTS signal
logic error was
detected.
The node address • The Servo Drive failed.
that was read from
the rotary switches
was not between 00
and 99.
The Servo Drive • The control circuit malfunc-
malfunctioned, or tioned temporarily due to
an error occurred in excess noise.
the Servo Drive.
• The Servo Drive's self-diagno-
sis function detected an error in
the Servo Drive.
A disconnection • The encoder is not wired cor-
was detected rectly.
because communi-
cations between the
encoder and the
Servo Drive were
stopped more fre-
quently than the
specified value.
3 Error Tables
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 Cylinder-type
Motor Manual
(Cat. No. I576)
S Same as
above.
S Cylinder-type
Motor Manual
(Cat. No. I576)
and Linear
Motor Manual
(Cat. No. I577)
Linear Motor
S
Manual (Cat.
No. I577)
S Cylinder-type
Motor Manual
(Cat. No. I576)
Reference
3
3-77