SMC Networks LEF Series User Manual

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5. Electric actuators / Common precautions
5.1 Design and selection
Warning
1. Be sure to read the operation manual (this manual and the one for the controller: LEC series).
Handling or usage/operation other than that specified in the Operation Manual may lead to breakage
and operation failure of the product.
Any damage attributed to the use beyond the specifications is not guaranteed.
2. There is a possibility of dangerous sudden action by the product if sliding parts of machinery
are twisted due to external forces etc.
In such cases, human injury may occur, such as by catching hands or feet in the machinery, or
damage to the machinery itself may occur. Design the machinery should be designed to avoid such
dangers.
3. A protective cover is recommended to minimize the risk of personal injury.
If a driven object and moving parts of the product are in close proximity, personal injury may occur.
Design the system to avoid contact with the human body.
4. Securely tighten all stationary parts and connected parts so that they will not become loose.
When the product operates with high frequency or is installed where there is a lot of vibration, ensure
that all parts remain secure.
5. Consider a possible loss of power source.
Take measures to prevent injury and equipment damage even in the case of a power source failure.
6. Consider behavior of emergency stop of whole system.
Design the system so that human injury and/or damage to machinery and equipment will not be
caused, when it is stopped by a safety device for abnormal conditions such as a power outage or a
manual emergency stop of whole system.
7. Consider the action when operation is restarted after an emergency stop or abnormal stop of
whole system.
Design the system so that human injury or equipment damage will not occur upon restart of
operation of whole system.
8. Never disassemble or modify (including additional machining) the product.
An injury ro failure can result.
It will cause the loss of the product performance.
9. Do not use the stop signal, "EMG" of the controller and stop switch on the teaching box as the
emergency stop of system.
The stop signal, "EMG" of controller and the stop switch on the teaching box are for decelerating and
stopping the actuator.
Design the system with an emergency stop circuit which is applied relevant safety standard separately.
10. When using it for vertical application, it is necessary to build in a safety device.
The table may fall due to the weight of work. The safety device should not interfere with normal
operation of the machine.
11. Do not exceed product specification, even if work load is supported by external linear guides.
The moment to actuator is reduced by external guide, but required ability for transport (relationship
between speed and work load) is not redeuced.
Caution
1. Operate within the limits of the maximum usable stoke.
The product will be damaged if it is used with the stroke which is over the maximum stroke. Refer to
the specifications of the product.
2. When the product repeatedly cycles with partial strokes, operate it at a full stroke at least once
every 10 strokes.
Otherwise, lubrication can run out.
3. Do not use the product in applications where excessive external force or impact force is applied
to it.
The product can be damaged.
4. Returning to origin cannot be done during the operation.
It cannot be done during positioning operation, pushing operation and pushing.
5. Refer to a common auto switch /matter (Best Pneumatics No 2) when an auto switch is built in
and used.
2021-05-2010:32
DW913599

SMC Networks LEF Series Specifications

General

Brand	SMC Networks
Model	LEF Series
Category	Controller
Language	English