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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 rod may fall due to the weight of work. The safety device should not interfere with normal operation
of the machine.
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
a day or every 1000 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. Each component that includes motor is made with accurate tolerance.
So even slightly deformed or miss-alignment of component may lead operation failure of the product.
Summary of Contents for LER Series
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