SMC Networks LER Series, Operation Manual, Page: 39 / 48

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5.5 Maintenance
Warning
1. Do not disassemble or repair the product.
Fire or electric shock can result.
Contact SMC, in case of disassembly for the maintenance.
2. Before modifying or checking the wiring, the voltage should be checked with a tester 5 minutes
after the power supply is turned off.
Electrical shock can result.
Caution
1. Maintenance should be performed according to the procedure indicated in the Operating
Manual.
Incorrect handling can cause an injury, damage or malfunction of equipment and machinery.
2. Removal of product
When equipment is serviced, first confirm that measures are in place to prevent dropping of work
pieces and run-away of equipment, etc, and then cut the power supply to the system. When machinery
is restarted, check that operation is normal with actuators in the proper positions.
[Lubrication]
Caution
1. The product has been lubricated for life at manufacturer, and does not require lubrication in
service.
When lubrication is applied, special grease must be used.
5.6 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 work piece.
2. For vertical mounting, use the product 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 happen when the lock slips due to a force hight 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 be cause of
lock release malfunction.
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. When the actuator is operated manually (when SVRE output signal is off), supply 24DCV to
the [BK RLS] terminal of the power supply connector.
If the product is operated without releasing the lock, wearing of the lock sliding surface will be
accelerated, causing reduction in the holding force and the life of the locking mechanism.
8. Do not supply 24VDC power supply constantly to the [BK RLS(Lock release)] terminal.
S
top supplying 24VDC power supply to the [BK RLS(Lock release) terminal during normal
operation. If power is supplied to the [BK RLS] terminal continuously, the lock will be released,
and workpieces may be dropped at stop (EMG).
/Refer to the operation manual of LEC (controller) for details of wiring.