Appendices
A - 128
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
Event name Encoder Communications Disconnection Error Event code 084A0000 hex
Description The communications disconnection was detected between the encoder and the Servo Drive.
Source
EtherCAT Master Function Mod-
ule
Source details
Slave
Detection
timing
Continuously
Error
attributes
Level
Minor fault
Recovery
Error reset
(after cycling
slave power)
Log category
System log
Effects User program Continues. Operation Power drive circuit is OFF
Indicators
EtherCAT NET RUN EtherCAT NET ERR EtherCAT LINK/ACT
--- --- ---
System
-defined
variables
Variable Data type Name
None None None
Cause and
correction
Assumed cause Correction Prevention
Noise into the encoder cable • Separate the motor cable and
the encoder cable if they are
bundled together.
• Connect the shield to FG.
• Check that the motor ground
wire is connected to FG.
• Separate the motor cable and
the encoder cable if they are
bundled together.
• Connect the shield to FG.
• Check that the motor ground
wire is connected to FG.
Contact failure of the signal line,
and disconnection of the encoder
Replace the encoder cable if it is
broken. Firmly connect the
encoder connector to the Servo
Drive.
Confirm that the encoder is not
broken before use, and connect
the encoder connector to the
Servo Drive securely.
Power supply undervoltage to the
encoder
Use the recommended encoder
cable.
Use the recommended encoder
cable.
Encoder failure If this event occurs again after you
performed all corrections shown
above, replace the motor.
None
Attached
information
None
Precautions/
Remarks
AL status code: -, Error No.: 2100 hex
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