15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
15-37
15
Maintenance
EA2 hex:
Command-
Option IF Servo
Synchronization
Error
Fluctuation in the Eth-
erCAT communica-
tions synchronization
timing (Sync0) caused
the synchronization
timing in the SERVO-
PACK to fluctuate.
–
Turn the power supply
OFF and ON again and re-
establish communica-
tions.
–
A failure occurred in
the SERVOPACK.
–
Repair or replace the
SERVOPACK.
–
EA3 hex:
Command-
Option IF Servo
Data Error
Noise caused an error
in communications in
the SERVOPACK.
–
Implement countermea-
sures against noise.
–
A failure occurred in
the SERVOPACK.
–
Replace the SERVO-
PACK.
–
Eb1 hex:
Safety Function
Signal Input Tim-
ing Error
The delay between
activation of the
/HWBB1 and
/HWBB2 input sig-
nals for the HWBB
was ten second or
longer.
Measure the time delay
between the /HWBB1
and /HWBB2 signals.
The output signal circuits
or devices for /HWBB1
and /HWBB2 or the SER-
VOPACK input signal cir-
cuits may be faulty.
Alternatively, the input sig-
nal cables may be discon-
nected. Check to see if
any of these items are
faulty or have been dis-
connected.
–
A failure occurred in
the SERVOPACK.
–
Replace the SERVO-
PACK.
–
EC8 hex:
Gate Drive Error 1
(An error
occurred in the
gate drive circuit.)
A failure occurred in
the SERVOPACK.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
–
EC9 hex:
Gate Drive Error
2
(An error
occurred in the
gate drive cir-
cuit.)
Ed1 hex:
Command Exe-
cution Timeout
A timeout error
occurred for an Ether-
CAT command.
Check the motor status
when the command is
executed.
Execute the Servo ON
command (Enable Opera-
tion command) only when
the motor is not operat-
ing.
–
F10 hex:
Power Supply
Line Open Phase
(The voltage was
low for more than
one second for
phase R, S, or T
when the main
power supply
was ON.)
The three-phase
power supply wiring is
not correct.
Check the power sup-
ply wiring.
Make sure that the power
supply is correctly wired.
The three-phase
power supply is
unbalanced.
Measure the voltage for
each phase of the
three-phase power sup-
ply.
Balance the power sup-
ply by changing phases.
–
A failure occurred in
the SERVOPACK.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
–
Continued on next page.
Continued from previous page.
Alarm Code:
Alarm Name
Possible Cause
Confirmation
Correction
Reference