Yaskawa Junma Series SERVOPACK - Manual (Page 76)

6.1 Alarm Indicator Lights
E-75
English
Overload The servomo-
tor did not
rotate for a ref-
erence input
from the con-
troller. Servomotor main circuit cable
wiring is incorrect or a contact in
servomotor wiring is faulty. Check and correct the servomo-
tor wiring.
Encoder cable wiring is incor-
rect or a contact in the cable is
faulty.
The starting torque exceeds the
maximum torque. Reconsider and correct the
load, operating conditions, and
servomotor capacity.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Normal opera-
tion. The effective torque continued
over the period of the rated
torque, or the starting torque
greatly exceeds the rated
torque. Reconsider the load and opera-
tion conditions.
Reconsider the servomotor
capacity and use a servomotor
with a larger capacity.
Drop in power supply voltage. Make sure that the power
supply voltage is within the
permissible range.
The servomotor coil burned out. Measure the coil resistance. If
the coil burned out, replace the
servomotor.
The servomotor was operated
with the holding brake engaged. Measure the voltage of the
brake terminals and release the
brake.
The ambient temperature
around the servomotor
exceeded 55
°C.
Reconsider the installation
conditions so that the ambient
temperature will be 55
°C or
less.
The installation conditions of the
SERVOPACK are not suitable
(the SERVOPACK is influenced
by the mounting direction,
mounting space, or ambient
objects).
A SERVOPACK fault occurred. Replace the SERVOPACK.
An overload alarm was cleared
excessive number of times by
turning OFF the power. Reconsider and correct the
load, operating conditions, and
servomotor capacity.
The SERVOPACK is used with
the 100 VAC input voltage, and
the motor is trying to rotate at a
speed outside the allowable
range defined by the speed/
torque characteristic curve. Use the 200 VAC input voltage
or input the reference correctly.
Servo OFF
status. The servomotor did not stop
three seconds after the SERVO-
PACK is set to servo OFF
status. Reconsider the load conditions.
Check to see if the servomotor
is being rotated by an external
force.
Alarm
Display
Alarm
Name
Conditions at
Alarm Occur-
rence
Cause Corrective Action
AL1
AL2
AL3