SMC Networks LE2FS Series Operation Manual page 14

③ Do not operate using external forces while the electric actuator and controller are
connected.
If the electric actuator mover is intentionally moved by external force (e.g. spring, human power,
etc.), primary side of the controller input power supply must be cut off before doing that.
If the slider is moved while the electric actuator is connected to the controller, the motor induced
voltage will be passed around the controller. Therefore, if the actuator is moved at high speed and
frequency, this induced voltage may cause the controller to break down.
【Lubrication】
Caution
① The product has been lubricated for life at manufacture and does not require
lubrication in service.
Contact SMC if lubrication will be applied.
■
Precautions for actuator with lock
Warning
① Do not use the lock as a safety lock or a control that requires a locking force.
The lock used for the product with a lock is designed to prevent dropping of the work piece.
② When using in a mounting position other than horizontal, be sure to use an electric
actuator with a lock.
If the product is not equipped with a lock, the product will move and drop the work piece when the
power is removed.
③ "Measures against drops" means preventing a work piece from dropping due to its
weight when the product operation is stopped and the power supply is turned off.
④ Do not apply an impact load or strong vibration while the lock is activated.
If an external impact load or strong vibration is applied to the product, the lock will lose it's holding
force and damage to the sliding part of the lock or reduced lifetime can result. The same situations
will occur when the lock slips due to a force higher than its holding force, as this will accelerate the
wear to the lock.
⑤ Do not apply liquid or oil and grease to the lock or its surrounding.
When liquid or oil and grease are adhered to the sliding part of the lock, its holding force will reduce
significantly. Or, lock sliding part performance and condition changes may cause a lock release
malunction.
⑥ Take measures against drops and check that safety is assured before mounting,
adjustment and inspection of the product.
If the lock is released with the product mounted vertically, a work piece can drop due to its weight.
⑦ If the mover of electric actuator with lock is intentionally moved by external force (e.g.
spring, human power, etc.), supply 24 V DC of the lock release power supply to the
LKRLS1 and LKRLS2 terminals of the power supply blocking plug after the controller
input power supply primary side is shut off.
If the product is manually operated without releasing the lock, wearing of the lock sliding surface will
be increased, causing reduction in the holding force and the life of the locking mechanism.
⑧ Do not constantly energize LKRLS1 and LKRLS2.
The LKRLS1 and LKRLS2 are only used for adjustment and emergency return. Be sure to stop
supplying 24 VDC power to LKRLS1 and LKRLS2 during normal operation. If power is still supplied
to LKRLS1 and LKRLS2, the lock is forcibly released. Therefore, the workpiece may fall under its
own weight when the servo is turned off, which may result in equipment failure.
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