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MELSEC-Q
15 TROUBLESHOOTING
Classifica
tion of
warnings
Warning
code
LED
display of
the servo
amplifier
Warning name Warning Cause
2149 E9
Main circuit of
warning
Servo ON signal is turned ON
while the main circuit power is
off.
Servo ON signal is turned ON while
the main circuit power is off.
2152 EC
Overload warning
2
Operation, in witch a current
exceeding the rating flew
intensively in any of the U, V
and W phases of the
servomotor, was repeated.
During a stop, the status in witch a
current flew intensively in any of the U,
V and W phases of the servomotor
occurred repeatedly, exceeding the
warning level.
Servo
amplifier
warnings
2153 ED
Output watt
excess warning
The status, in witch the output
wattage (speed
torque) of the
servomotor exceeded the rated
output, continued steadily.
Continuous operation was performed
with the output wattage (speed
torque) of the servomotor exceeding
150% of the rated output.