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9. TROUBLESHOOTING
9.3 Remedies for warnings
If E6, E7, E9 or EE occurs, the servo off status is established. If any other warning occurs, operation can
be continued but an alarm may take place or proper operation may not be performed. Eliminate the cause
of the warning according to this section. Use the optional MR Configurator (servo configuration software)
to refer to the cause of warning.
Display Name Definition Cause Action
1. Battery cable is open. Repair cable or changed.92 Open battery
cable warning
Absolute position
detection system battery
voltage is low.
2. Battery voltage dropped to 2.8V or less. Change battery.
1. Droop pulses remaining are greater
than the in-position range setting.
Remove the cause of droop pulse
occurrence
2. Home position return was executed
during operation command
96 Home position
setting warning
Home position return
could not be made in the
precise position.
3. Creep speed high.
Reduce creep speed.
9F Battery warning Voltage of battery for
absolute position
detection system reduced.
Battery voltage fell to 3.2V or less. Change the battery.
E0 Excessive
regenerative
warning
There is a possibility that
regenerative power may
exceed permissible
regenerative power of
built-in regenerative
brake resistor or
regenerative brake
option.
Regenerative power increased to 85% or
more of permissible regenerative power of
built-in regenerative brake resistor or
regenerative brake option.
Checking method
Call the status display and check
regenerative load ratio.
1. Reduce frequency of
positioning.
2. Change regenerative brake
option for the one with larger
capacity.
3. Reduce load.
E1 Overload
warning
There is a possibility that
overload alarm 1 or 2
may occur.
Load increased to 85% or more of overload
alarm 1 or 2 occurrence level.
Cause, checking method
Refer to 50, 51.
Refer to 50, 51.
1. Noise entered the encoder. Take noise suppression
measures.
E3 Absolute position
counter warning
Absolute position encoder
pulses faulty.
2. Encoder faulty. Change servo motor.
E4 Parameter
warning
Parameter outside
setting range
Parameter value set from servo system
controller is outside setting range
Set it correctly.
E6 Servo forced stop
warning
EM1 is off. External forced stop was made valid.
(EM1 turned off.)
Ensure safety and deactivate
forced stop.
E7 Controller
emergency stop
warning
Emergency stop signal was entered into
the servo system controller.
Ensure safety and deactivate
emergency stop.
E9 Main circuit off
warning
Servo-on (SON) was
switched on with main
circuit power off.
Switch on main circuit power.
EE SSCNET error
warning
The servo system
controller connected is
not SSCNET-compatible.