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Appendices
A - 100
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
08490000
Overcurrent Error
The current flowing to the
motor exceeded the protec-
tion level.
• There is a short-circuit,
ground fault, or contact fail-
ure on the U, V, or W motor
cable
• There is a short-circuit on
the wiring of External
Regeneration Resistor
• The insulation resistance
failed between the U, V, or
W motor cable and the
motor ground wire
• False detection due to the
noise
• Servo Drive failure
√
084A0000
Encoder Communi-
cations Disconnec-
tion Error
The communications dis-
connection was detected
between the encoder and
the Servo Drive.
• Noise into the encoder
cable
• Contact failure of the signal
line, and disconnection of
the encoder
• Power supply undervoltage
to the encoder
• Encoder failure
√
084B0000
Encoder Communi-
cations Error
Illegal data was received
from the encoder the speci-
fied number of times.
• Noise into the encoder
cable
• Contact failure of the signal
line, and disconnection of
the encoder
• Power supply undervoltage
to the encoder
√
084D0000
Non-volatile Memory
Hardware Error
An error occurred on the
non-volatile memory.
• False detection due to a
data read error that was
caused by excessive noise
• Non-volatile memory failure
√
18230000
Absolute Encoder
Multi-rotation
Counter Error
The encoder detected a
multi-rotation counter error.
• A temporary error occurred
in the encoder multi-rotation
detection function due to
vibration, impact, or con-
densation
• Encoder failure
√
18380000
System Error
A hardware error due to the
self-diagnosis and a fatal
software error were
detected.
• False detection due to a
data read error that was
caused by excessive noise
• A fatal software error was
detected
• Hardware failure
√
Event code
(hex)
Event name
Description
Assumed cause
Level
Refer-
ence
Min
Ob
s
In
fo
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