Precautions for use
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12
Temperature
z
Use the actuator equipped with the
AZ
Series in conditions where its surface temperature will not
exceed 80 °C (176 °F).
The motor surface temperature may exceed 80 °C (176 °F) under certain conditions (ambient temperature, operating
speed, duty cycle, etc.). In order to protect the encoder (ABZO sensor), use the motor in a conditions where the surface
temperature does not exceed 80 °C (176 °F). If the encoder (ABZO sensor) temperature reaches the upper limit, the
motor overheat protection alarm will generate.
z
Use the actuator equipped with the
AR
Series or
RKII
Series in conditions where its surface
temperature will not exceed 100 °C (212 °F).
The motor does not have a function to protect from overheating. The motor surface temperature may exceed 100 °C
(212 °F) under certain conditions (ambient temperature, operating speed, duty cycle, etc.). To prevent the motor
bearings (ball bearings) from reaching its usable life quickly, use the motor in a conditions where the surface
temperature does not exceed 100 °C (212 °F).
Operation
z
Do not apply a moment load or axial load in excess of the specified permissible limit.
Operating the actuator under an excessive moment load or axial load may damage the bearings. Be sure to operate
the actuator below the specified permissible limits of the moment load and axial load.
z
When the motor is the double shaft
With these models, do not apply load torque, radial load or axial load to the back shaft of the motor.
z
Hollow hole section
If the pipe or cable installed in the hollow hole section is rotated together with the output table, take measures not to
rub or disconnect in contact with the inner wall of the hollow hole section.
z
Holding torque at standstill
When the actuator stops, the holding torque of the output table will be reduced by the current cutback function of
the driver. When selecting a actuator, check the holding torque at motor standstill in the specifications on the catalog.
z
Do not use the electromagnetic brake to reduce speed or as a safety brake.
Do not use the electromagnetic brake as a means to decelerate and stop the actuator. The brake hub of the
electromagnetic brake will wear significantly and the braking force will drop if used to stop the motor. The
electromagnetic brake is a power-off activated type. This means that although it helps maintain the position of the
load in the event of power outage, etc., this brake cannot securely hold the load in place. Accordingly, do not use the
electromagnetic brake as a safety brake. To use the electromagnetic brake to hold the load in place, do so after the
actuator has stopped.
z
Do not perform an operation to cause overshooting or undershooting.
Operating the actuator under the condition that overshooting or
undershooting occurs may cause damage to the gear-reduction
mechanism. Review the operating condition or adjust the speed filter.
Since the product equipped with the
RKII
Series pulse input type does not
have the function of the speed filter, adjust to revise the operating
condition.
Ac
tuator rotation
speed
Time
Overshooting
Undershooting
