A - 111
Appendices
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
A-4 Sysmac Error Status Codes
A
A-4-1 Error List
387D0000 Regeneration Over-
load Warning
The Regeneration Load
Ratio (4150-81 hex)
exceeded 85%.
• The regeneration process-
ing is set inappropriately
• The Regeneration Resistor
is selected inappropriately
• The Regeneration Resistor
is used for continuous
regenerative braking
• The applied power supply
voltage is higher than the
specified value
• Regeneration Resistor fail-
ure
√ P. A -17 2
387E0000 Motor Vibration
Warning
The motor vibration, which
was higher than or equal to
the level set in the Vibra-
tion Detection - Detection
Level (3B70-01 hex), was
detected.
• The control parameter is set
inappropriately
• The rigidity decreased due
to mechanical looseness or
wear
√ P. A -17 3
78220000 Command Warning A command could not be
executed.
• The Switch ON command
was received
• The Enable operation com-
mand was received
• An operation command in
the prohibition direction was
received after the immedi-
ate stop by the Drive Prohi-
bition Input or Software
Position Limit
• Homing started
• The positioning start com-
mand was received in the
Profile position mode
√ P. A -17 4
84B00000 EtherCAT Communi-
cations Warning
An EtherCAT communica-
tions error occurred more
than one time.
• An EtherCAT communica-
tions cable is disconnected,
broken, short-circuited, or
has a contact failure in a
daisy chain configuration.
• In a ring topology configura-
tion, the ring disconnection
status occurred.
• In a ring topology configura-
tion, the ring disconnection
status was fixed.
•Noise
• Failure of the EtherCAT
physical layer of a Servo
Drive
√ P. A -17 5
90A00000 Unit Restarted Restart was performed. • Restart was performed √ P. A-1 7 5
98210000 STO Detected The safety input OFF state
was detected via the safety
input signal or EtherCAT
communications.
• The cable is disconnected
or broken
• The STO input was turned
OFF via EtherCAT commu-
nications
√ P. A-1 76
Event code
(hex)
Event name Description Assumed cause
Level
Refer-
ence
Min
Obs
Info
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