SMC LEG Series Electric Actuator User Manual

SMC LEG Series Electric Actuator

Product Information

Electric Actuator/Guide type

The Electric Actuator/Guide type is a battery-less absolute step motor (24VDC) product from SMC’s LEG series. It is available in three different models: LEG(25,32,40). The product is compatible with the H series controller.

Specification

• Construction: Guide rod type
• Parameter setting: Available

Safety Instructions

When using this product, it is important to follow the safety instructions below:

• Danger: Only trained personnel should operate machinery and equipment. The assembly, operation, and maintenance of machines or equipment including our products must be performed by an operator who is appropriately trained and experienced.
• Caution: The product is provided for use in manufacturing industries. If considering using the product in other industries, consult SMC beforehand and exchange specifications or a contract if necessary.

Product Usage Instructions

Follow the steps below to use the Electric Actuator/Guide type:

1. Refer to the manual relevant to the controller being used for full operating instructions.
2. Handle the product correctly, following the relevant safety regulations.
3. Mount the product correctly in accordance with the instructions provided in the manual.
4. Perform parameter setting as required.
5. Replace the belt if necessary, following the instructions provided in the manual.
6. If you experience any issues with the product, consult the troubleshooting section of the manual.

By following these steps, you can ensure that you are using the Electric Actuator/Guide type safely and correctly.

• This manual describes the actuators operation in combination with the JXC*H series controllers.
• Refer to the manual relevant to the controller being used for full operating instructions.

Safety Instructions

• These safety instructions are intended to prevent hazardous situations and/or equipment damage.
• These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.” They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC)*1) , and other safety regulations.
• ISO 4414: Pneumatic fluid power
• General rules relating to systems.
• ISO 4413: Hydraulic fluid power
• General rules relating to systems.
• IEC 60204-1: Safety of machinery –
• Electrical equipment of machines.(Part 1: General requirements) ISO 10218: Manipulating industrial robots -Safety. etc.
• Caution indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
• Warning indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
• Danger indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.

Warning

1. The compatibility of the product is the responsibility of the person who designs the equipment or decides its specifications.
   Since the product specified here is used under various operating conditions, its compatibility with specific equipment must be decided by the person who designs the equipment or decides its specifications based on necessary analysis and test results.
   The expected performance and safety assurance of the equipment will be the responsibility of the person who has determined its compatibility with the product.
   This person should also continuously review all specifications of the product referring to its latest catalog information, with a view to giving due consideration to any possibility of equipment failure when configuring the equipment.

2. Only personnel with appropriate training should operate machinery and equipment.
   The product specified here may become unsafe if handled incorrectly.
   The assembly, operation and maintenance of machines or equipment including our products must be performed by an operator who is appropriately trained and experienced.

3. Do not service or attempt to remove product and machinery/equipment until safety is confirmed.

4. The inspection and maintenance of machinery/equipment should only be performed after measures to prevent falling or runaway of the driven objects have been confirmed.

5. When the product is to be removed, confirm that the safety measures as mentioned above are implemented and the power from any appropriate source is cut, and read and understand the specific product precautions of all relevant products carefully.

6. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.

7. Contact SMC beforehand and take special consideration of safety measures if the product is to be used in any of the following conditions.

8. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to direct sunlight.

9. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping, vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or other applications unsuitable for the standard specifications described in the product catalog.

10. An application which could have negative effects on people, property, or animals requiring special safety analysis.

11. Use in an interlock circuit, which requires the provision of double interlock for possible failure by using a mechanical protective function, and periodical checks to confirm proper operation.

Caution

• The product is provided for use in manufacturing industries.
• The product herein described is basically provided for peaceful use in manufacturing industries.
• If considering using the product in other industries, consult SMC beforehand and exchange specifications or a contract if necessary.
• If anything is unclear, contact your nearest sales branch.

Limited warranty and Disclaimer/Compliance Requirements

• The product used is subject to the following “Limited warranty and Disclaimer” and “Compliance Requirements”.
• Read and accept them before using the product.

Limited warranty and Disclaimer

1. The warranty period of the product is 1 year in service or 1.5 years after the product is delivered,whichever is first.2)

   • Also, the product may have specified durability, running distance or replacement parts. Please consult your nearest sales branch.

2. For any failure or damage reported within the warranty period which is clearly our responsibility, a replacement product or necessary parts will be provided.

   • This limited warranty applies only to our product independently, and not to any other damage
     incurred due to the failure of the product.

   • Prior to using SMC products, please read and understand the warranty terms and disclaimers noted in the specified catalog for the particular products. Vacuum pads are excluded from this 1 year warranty. A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.

   • Also, even within the warranty period, the wear of a product due to the use of the vacuum pad or failure due to the deterioration of rubber material are not covered by the limited warranty.

Compliance Requirements

1. The use of SMC products with production equipment for the manufacture of weapons of mass destruction(WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are governed by the relevant security laws and regulation of the countries involved in the transaction. Prior to the shipment of a SMC product to another country, assure that all local rules governing that export are known and followed.

Caution

• SMC products are not intended for use as instruments for legal metrology.
• Measurement instruments that SMC manufactures or sells have not been qualified by type approval tests relevant to the metrology (measurement) laws of each country.
• Therefore, SMC products cannot be used for business or certification ordained by the metrology (measurement) laws of each country.

Specification

How to Order

Caution

• The actuator body and controller are sold as a package.
• If when only the actuator is purchased separately, confirm that the combination of the controller, which you have and the actuator is compatible.
• Check that actuator label for model number. This matches the controller.

Actuator specifications

| Work load

［kg］*1）

| Horizonal (30,50 stroke, L=50 or less)| 20| 45| 60
Vertical| 24| 27| 27
Max.weight of transferred object[kg] 2）| 75| 100| 150
Pushing force［N］3）4）5）| 126 to 238| 156 to 370| 266 to 553
Speed［mm/s］5）| 18 to 250| 24 to 200| 24 to 150
Max.acceleration/deceleration［mm/s2］| 5,000
Pushing speed［mm/s］6）| 35 or less| 30 or less| 30 or less
Positioning repeatability［mm］| ±0.02
Screw lead［mm］| 6| 8| 8
Impact/Vibration resistance［m/s2］*7）| 50/20
Actuation type| Ball screw＋Belt（Top mounting）, Ball screw（In-line）
Guide type| Sliding bearing
Operating temperature range［℃］| 5 to 40
Operating humidity range［％RH］| 90 or less (No condensation)

Electric specifications

| Motor size| □42| □56.4| □56.4
Motor type| Battery-less absolute （Step motor 24VDC）
Encoder| Battery-less absolute
Rated voltage［V］| 24VDC±10％
Power［W］*8）| Max.126| Max.159| Max.141

Lock nuit specifications

| Type 9）| Non-magnetizing lock
Holding force［N］| 78| 108| 113
Power consumption［W］10）| 5| 5| 5
Rated voltage［V］| 24VDC±10％

1. Horizontal： Workload changes according to the distance from the plate to the centre of gravity of the load. Check the “Model Selection” on catalog.
   • Vertical： Speed changes according to the work load. Check the “Model Selection” on catalog.
   • The workload is changed by the eccentric distance. Check the “Model Selection” on catalog.
2. This weight of transferred oclect is when using stopper.
3. Pushing force accuracy is ±20% (F.S.).
4. Pushing force is the set pushing force shown below. Pushing force varies depending on the motor type.
   • The pushing force values for Battery-less absolute (Step motor 24 VDC) / Size 25：30％ to 50％, Size 32：30％ to 70％, Size 40：20 to 45％. The pushihng force values change according to the duty ratio and pusing speed. Check the “Model Selection” on catalog.
5. The speed and force may change depending on the cable length, load and mounting conditions, Furthermore, if the cable length exceeds 5 m, then it will decrease by up to 10% foy each 5 m. (At 15 m: Reduced by up to 20%)
6. The allowable speed for the pushing operation.
7. Impact resistance: No malfunction occurred when it was tested with a drop tester in both an axial direction and a perpendicular direction to the lead screw. (The test was performed with the actuator in the initial state.) Vibration resistance: No malfunction occurred in a test ranging between 45 to 2000 Hz. The test was performed in both an axial direction and a perpendicular direction to the lead screw. (The test was performed with the actuator in the initial state.)
8. The power (including the controller) is for when the actuator is operating. This value can be used for the selection of the power supply.
9. With lock only.
10. For an actuator with lock, add the power consumption for the lock.

Weight［kg］/ Top mounting

Weight［kg］/ In-line

Construction

EG25/32/40M ・・・ Top mounting type

Component Parts

Replacement Parts/Grease Pack

Order No.

GR-S-010(10g)
GR-S-020(20g)

EG25/32/40MD ・・・ In-line type

Replacement Parts/Grease Pack

Order No.

GR-S-010(10g)
GR-S-020(20g)

Parameter setting

Initial setting for the basic parameters

• Refer to the controller’s (JXC series) operation manual for detail.
• As the “basic parameter” is unique data of each actuator, if an actuator other than the “electric actuator / guide type” is used, refer to the operation manual of each actuator and the controller’s (JXC series) operation manual for the basic parameter.

product
Maximum acceleration / deceleration| 5000| to 5000
Default In positioning| 0.5| 0.5 to product stroke

Origin offset Note4)

|

0.00

| Origin direction: CCW:

-10000 + ”product stroke” to 9999 Origin direction: CW

-9999 to +10000 – ”product stroke”

Maximum pushing force| 50| 70| 45| –
Parameter protect| 1:    Common + StepData| Changeable parameter

1: Common + StepData, 2: Common

Enable switch| 2: Disable| Select 1:Enable or 2:Disable when using a teaching box
Model name| Part no. of each product| Only the English characters and numbers

are changeable.

W-area output end 1| 0.00| –
W-area output end 2| 0.00| –
Origin correction data| 0.00| –

• Note1) Become effective after restarting the controller.
• Note 2) Set the stroke setting value which has the additional distance. When inputting the product stroke, the “stroke limit”alarm may be generated. (Code 1-052). （Stroke + 2mm as recommended）
• Note 3) The initial input value is when the origin direction is “CCW”. When the origin direction set to “CW”, input “2” to the “stroke(+)” and input “-(stroke)-2” to the “stroke(-)”.
• Note 4) The origin offset is used for the “return to origin”.

Initial setting for the ORIG parameters

• Refer to the controller’s (JXC series) operation manual for detail.
• As the “ORIG parameter” is unique data of each actuator, if an actuator other than the “electric actuator/guide type” is used, refer to the operation manual of each actuator and the controller’s (JXC series) operation manual for the “ORIG parameters”.

Description

（Extract）

| Initial input value| Input range
---|---|---
ORIG direction| 2| 1:CW , 2:CCW   Note1)
ORIG mode| 1| –
ORIG limit| 100| –
ORIG time| 100| –
ORIG speed| 20| –
ORIG ACC /DEC| 1000| –
Creep speed| 10|
ORIG sensor| 0: Disable| –

Note 1) CCW direction: motor side origin, CW direction: end side origin. Become effective after restarting the controller.

Electric Actuators Precautions

Wiring/Cables

Warning

1. Adjustment, installation, inspection, or wiring changes should be conducted after the power supply to this product has been turned off.
   • Electrical shock, malfunction, or damage can result.
2. Never disassemble the cable. Use only the specified cables.
3. Never connect or disconnect the cable or connector with the power on.

Caution

1. Wiring should be done correctly.
   • For each terminal, voltages other than those stipulated in the operation manual should not be applied.
2. Connect the connector securely.
   • Check for correct connector wiring and polarity.
3. Handling noise
   • If the noise is at the same wavelength as the signal lines, it will lead to malfunction. As a countermeasure, separate the high and low electrical lines, shorten the length of wiring, etc.
4. Do not connect power or high-voltage cables in the same wiring path as the unit.
   • The product can malfunction due to noise and surge voltage interfer- ence in the signal line from power and high-voltage cables.Separate the wiring of the controller and its peripheral device from that of power and high-voltage cables.
5. Be careful that cables are not caught by actuator movement.
6. Operate with cables such that they are not easily moved.
   • Avoid bending cables at sharp angles where they enter the product.
7. Avoid twisting, folding, rotating, or applying external force to the cable.
   • Electric shock, wire breakage, contact failure, or a loss of product control may occur.
8. Do not move cables connected to the actuator.
   • The motor and lock cables are not robotic cables and can be broken when moved. Therefore, secure the cables and the connectors (part “A” in the figure below) in place during set up.
9. Select a “robotic cable (flexible cable)” when repeated bending of the actuator cable is required. Also, do not put cables into a flexible moving tube with a radius smaller than the specified value (50 mm or longer).
   • Electric shock, wire breakage, contact failure, or a loss of product control may occur if “standard cables” are used for repeated bending.
10. Confirm wiring insulation.
    • Insulation failure (interference with other circuits, poor insulation between terminals, etc.) could introduce excessive voltage or current to the controller or its peripheral devices, causing damage to them.
11. The speed and force may change depending on the cable length, load, and mounting conditions.
    • Furthermore, if the cable length exceeds 5 m, then it will decrease by up to 10% for every additional 5 m. (At 15 m: Reduced by up to 20%)
12. When checking the conductivity of the cable, be care- ful not to deform the connector’s mating hole and terminals.
    • Inserting a non-compatible connector, tool, cylinder-shaped object, etc., into the connector’s mating hole can cause the mating hole or terminals to become deformed, which may cause contact failure or disconnection.
13. Refrain from plugging in and unplugging the connector frequently.
    • Doing so may result in contact failure or disconnection.

【Transportation】

Caution

1. Do not carry or swing the product by the cable.

Design/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 opera- tion manual may lead to breakage or operation failure of the product.Any damage attributed to use beyond the specifications is not covered by the warranty.

2. There is a possibility of dangerous sudden action by the product if the sliding parts of the machinery are twisted due to external forces, etc.
   In such cases, human injury may occur, such as by hands or feet getting caught in the machinery, or damage to the machinery itself may occur. Design the machinery so as to avoid such dangers.

3. A protective cover is recommended to minimize the risk of personal injury.
   If a driven object and the 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 se- cure.

5. Consider a possible loss of power source.
   Take measures to prevent injury and equipment damage in the event of a power source failure.

6. Consider emergency stops.
   Design so that human injury and/or damage to machinery and equipment will not be caused when machinery is stopped by a safety device under abnormal conditions, such as a power outage or a manual emergency stop.

7. Consider the whole system.
   Design the system so that human injury or equipment damage will not occur upon the restart of operation of the whole system.

8. Never disassemble the product or make any modifica- tions, including additional machining. Doing so may cause human injury and/or an accident. It may also cause the deterioration of the product’s performance.

9. Do not use the stop signals, the “EMG” of the control- ler and the stop switch on the teaching box, as the emergency stop of the system.
   The stop signals, “EMG” of the 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 applies to the relevant safety standards separately.

10. When using the product vertically for applications, it is necessary to install a built-in safety device.
    The table may fall due to the weight of a workpiece. The safety device should not interfere with the 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 a stroke which exceeds 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 may run out.

3. Do not use the product in applications where exces- sive external force or impact force is applied to it.
   The product can be damaged. The components, including the motor, are manufactured to precise tolerances. Even a slight deformation may cause a malfunction or seizure.

4. During operation (positioning operation or pushing op- eration), it cannot be returned to the origin position.

5. Refer to the Auto Switches Precautions (pages 15 to 19) if an auto switch is to be built in and used.

6. Step motor (servo/24 VDC) and servo motor (24 VDC) specifica- tions with the following model number are not compliant with UL Standards: “Controller/Driver type: Without controller/driver (Nil).”
   Individual actuators are not certified as UL Standards compliant products.

7. When UL Standards compliance is required, the electric actuator and controller/driver should be used with a UL1310 class 2 power supply.

8. Do not exceed the product specifications even if a work load is supported by external guides. Although the actuator moment is reduced by external guides, the required trans- port ability (the relationship between the speed and the work load) is not reduced.

Mounting

Warning

1. Keep the manual in a safe place for future reference.
   The product should be mounted and operated only after thorough- ly reading the operation manual and understanding its contents.

2. Observe the tightening torque for screws.
   Tighten the screws to the recommended torque for mounting the product.

3. Do not make any alterations to this product.
   Alterations made to this product may lead to a loss of durability or damage to the product, which can lead to human injury or damage to other equipment and machinery.

4. When connecting, make sure the rod axis and the load, and the direction of the movement match.
   Failure to do so may cause complications with the lead screw, such as wear or damage.

5. When an external guide is used, connect the moving parts of the actuator and the load in such a way that there is no interference at any point within the stroke.
   Do not scratch or dent the sliding parts of the product tube, piston rod, etc., by striking or grasping them with other objects. The com- ponents are manufactured to precise tolerances. Even a slight deformation may cause a malfunction or seizure.

6. Prevent the seizure of rotating parts (pins, etc.) by ap- plying grease.

7. Do not use the product until you confirm that the equipment can operate properly.
   After mounting or repair, connect the power supply to the product and perform appropriate functional inspections to check it is mounted properly.

8. When one side is fixed
   When an actuator is operated at a high speed with one end fixed and the other free (basic, flange, or direct mount types), a bending moment may act on the actuator due to the vibration generated at the stroke end, which can damage the actuator. In such a case, install a mounting bracket to suppress the vibration of the actuator body, or reduce the speed so that the actuator does not vibrate. Also, use a mounting bracket when moving the actuator body or when a long stroke actuator is mounted horizontally and fixed at one end.

9. Do not apply strong impact or an excessive moment while mounting the product or a workpiece. If an external force over the allowable moment is applied, it may cause play in the guide or an increase in the sliding resistance.

10. Maintenance space
    Reserve sufficient space for maintenance.

Handling

Warning

1. Do not touch the motor during operation.
   The surface temperature of the motor can increase to approx. 80 C due to operating conditions. The temperature may also increase due to energiza- tion. As it may cause burns, do not touch the motor when in operation.

2. If abnormal heating, smoking, fire, etc., occurs in the product, immediately shut off the power supply.

3. Stop operation at once if there are abnormal noises or vibrations.
   Abnormal noises or vibrations may mean that the product is not properly mounted, and if allowed to continue in this state, damage to the equipment may occur.

4. Never touch the rotating parts of the motor while in operation.

5. Before installing, adjusting, inspecting, or performing maintenance on the product, controller, and related equip- ment, be sure to shut off the power supply. Then, lock it so that no one other than the person working can turn the power on, or implement measures such as a safety plug.

6. In the case of an actuator that has a servo motor (24 VDC), the motor phase detection step is conducted by inputting the servo’s on signal just after the controller power is turned on. The motor phase detection step moves the table/rod the dis- tance of the one screw-lead as the maximum.
   (The motor rotates in the reverse direction if the table/rod hits an ob- stacle such as the end stop damper.) Take the motor phase detection step into consideration when installing and operating this actuator.

Caution

1. Keep the controller and the actuator combined as delivered for use.

   • The actuator’s parameters are set at the time of shipment. If it is combined with a different set of parameters, failure can result.

2. Conduct the following inspection before operation.

   • a) Confirm that the power supply line and each signal line is not damaged.
   • b) Confirm that the power supply line and each signal line is not loosened.
   • c) Confirm that the electric actuator/cylinder/controller/driver is not mounted loosely.
   • d) Confirm that the electric actuator/cylinder/controller/driver is operating correctly.
   • e ) Confirm the function of the emergency stop of the whole system.

3. If several persons are to be working conjointly, determine the pro- cedure, signs, measures against abnormality, and restarting mea- sures in advance. Then, have someone else, supervise the work.

4. The product may operate at a speed different from the set speed depending on the load and resistance.
   When selecting a product, check the catalog for instructions regarding selection and specifications.

5. Do not apply a load, impact, or resistance in addition to the transferred load during the return to origin.
   If the product is made to return to origin by pushing force, a displacement of the origin position may occur.

6. Do not remove the name plate.

7. Operation tests should be done at a low speed. Start operation by predefined speed after confirming there are no problems.

8. Do not apply forces of impact, collision, or resistance to the moving parts of an actuator in operation.
   Doing so will cause a decrease in product life, damage to the product, etc.

Grounding

Warning

1. Be certain to ground the actuator.
2. Dedicated grounding should be used. Grounding should be to a D-class ground. (Ground resistance of 100 or less.)
3. Grounding should be performed near the actuator to shorten the grounding distance.
4. The cross-sectional area of this wire shall be a minimum of 2 mm2.
5. Avoid common grounding with other devices.

Unpackaging

Caution

1. Check that the received product is as ordered.

If a product different from the one ordered is installed, injury or damage can result.

Operating Environment

Warning

1. Avoid use in the following environments.

• a) Areas with large amounts of dust or cutting chips that could enter the product
• b) Areas where the ambient temperature exceeds the specified range (Refer to the specifications.)
• c) Areas where the ambient humidity exceeds the specified range (Refer to the specifications.)
• d) Areas with corrosive gas, flammable gas, sea water, water, or steam that could adhere to the product
• e) Areas where strong magnetic or electric fields are generated
• f) Areas where direct vibration or impact shock is applied to the product
• g) Areas where there are large amounts of dust or there is exposure to water/oil droplets
• h) Areas that are exposed to direct sunlight (ultraviolet rays)
• i) Areas at altitudes of over 1000 m
• Heat radiation performance and withstand voltage may decline as a result. For details, consult with SMC.

1. Do not use in an environment where the product is di- rectly exposed to liquid, such as cutting oils. If cutting oil, coolant, or oil mist adheres to the product, failure or increased sliding resistance can result.
2. Install a protective cover when the product is used in an environment directly exposed to foreign matters, such as dust, cutting chips, and spatter. Looseness or increased sliding resistance can result.
3. Shade the product from direct sunlight.
4. In locations near heat sources, block them off. When there is a heat source surrounding the product, the radiated heat from the heat source can increase the temperature of the product beyond the operating temperature range. Protect it with a cover, etc.
5. Levels of the base oil of grease may decrease due to the exter- nal environment and operating conditions, causing a decline in lubrication performance and a shortened life of the product.

Storage

Warning

1. Do not store the product in a place in direct contact with rain or water drops or where it is exposed to harmful gas or liquid.
2. Store in an area that is shaded from direct sunlight and has a temperature and humidity within the specified range (–10 C to 60 C and 35 to 85% no condensation or freezing).
3. Do not apply vibration or impact to the product during storage.

Maintenance

Warning

1. Do not disassemble or repair the product. Fire or electric shock can result. Contact SMC if the disassembly of the product is required for maintenance.
2. Before modifying or checking the wiring, the voltage should be checked with a tester 5 minutes after the power supply has been turned off. Failure to do so may result in electrical shock.

Caution

1. Perform maintenance and inspection according to the procedures indicated in the operation manual. Improper handling can cause an injury, damage, or the malfunc- tion of equipment and machinery.

2. Removal of equipment
   Before equipment is removed, first confirm that measures are in place to prevent the dropping or runaway of driven objects, etc. Proceed only after cutting off the electric power. When starting up again, proceed with caution after confirming that conditions are safe.

3. Be sure to cut the power to the controller and discon- nect the electric actuator cable before moving the electric actuator slider manually by hand. If the slider is moved with the electric actuator and controller still connected, the induced voltage of the motor will go to the control- ler, making it difficult to move the electric actuator smoothly. Moreover, frequently moving the electric actuator slider may result in controller damage or malfunction due to the induced voltage.

Lubrication

Caution

• The product has been lubricated for life by the manufac- turer and does not require any further lubrication.
• When lubrication is applied, special grease must be used. Please read the maintenance manual of each actuator.

Actuator with Lock

Warning

1. Do not use the lock as a safety brake or as a control that requires a locking force. The lock used for the product with lock is designed to prevent the dropping of workpieces.
2. For vertical mounting, use the product with lock. If the product is not equipped with a lock, the product will move and drop the workpiece when the power is removed. Please ensure that your safe equipment designs include measures to prevent the falling of workpieces.
3. “Drop prevention” is a safety precaution that prevents a workpiece 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 prod- uct, the lock will lose its holding force and damage to the sliding parts of the lock or a reduced service life may result. The same adverse effects may also occur when the lock slips due to a force exceeding the holding force, as this accelerates the wear of the lock.
5. Do not apply liquid, oil, or grease to the lock or the area surrounding it. When liquid, oil, or grease are adhered to the sliding parts of the lock, its holding force will reduce significantly. Any changes in lock sliding performance and condition may cause a lock release malfunction.
6. Take measures against drops and check that safety is assured before the mounting, adjustment, and inspec- tion 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 the SVRE output signal is off), supply 24 VDC to the [BK RLS] terminal of the power supply connector. If the product is operated without releasing the lock, the wearing of the lock sliding surface will be accelerated, causing a reduction in the holding force and the life of the locking mechanism.
8. Do not supply 24 VDC power supply continuously to the [BK RLS (Lock release)] terminal. Stop supplying 24 VDC 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 when the stop signal (EMG) is received.
9. The actuator may unable to unlock when the sliding part for locking reaches its life due to therotation sliding of the shoe during operation. When the lock mechanism reaches its life, please contact SMC sales office for the replacement parts. The sliding part for locking may make noise during operation, but this is normal.

Controller (Including Driver) and Peripheral Devices

Design/Selection

Warning

1. Be sure to apply the specified voltage.
   Otherwise, malfunction or breakage may occur. If the applied volt- age is lower than the specified voltage, it is possible that the load will not be able to be moved due to an internal voltage drop of the controller. Please check the operating voltage before use.

2. Do not operate the product beyond the specifications.
   Otherwise, a fire, malfunction, or actuator damage may result. Please check the specifications before use. Install an emergency stop circuit.

3. Please install an emergency stop outside of the enclosure so that the system operation can be stopped immediately and the power supply can be intercepted.

4. In order to prevent any damage caused by the break- down or malfunction of the controller and its peripher- al devices, a backup system should be established in advance by giving a multiplelayered structure or a fail-safe design to the equipment, etc.

5. If a danger of human injury is expected due to abnor- mal heat generation, smoking, ignition, etc., of the controller and its peripheral devices, cut off the power supply of the product and the system immediately.

Caution

1. Use an actuator with the lock option if the actuator will not be mounted horizontally for use. Burnout of the internal parts of the controller may occur. If the actuator is not equipped with a lock, it will move and drop the workpiece when the power and servo are turned OFF.

Handling

Warning

1. Do not touch the inside of the controller and its periph- eral devices.
   Doing so may cause an electric shock or damage to the controller.

2. Do not perform the operation or setting of the product with wet hands.
   Doing so may cause an electric shock.

3. Products with damage or those missing any compo- nents should not be used.
   An electric shock, fire, or injury may result.

4. Use only the specified combination between the elec- tric actuator and controller.
   Failure to do so may cause damage to the actuator or the controller.

5. Be careful not to be hit by workpieces while the actua- tor is moving.
   It may cause an injury.

6. Do not connect the power supply or power on the product before confirming the area to which the work- piece moves is safe.
   The movement of the workpiece may cause an accident.

7. Do not touch the product when it is energized and for some time after power has been disconnected, as it is very hot. Doing so may lead to a burn due to the high temperature.

8. Before installation, wiring, and maintenance, the volt- age should be checked with a tester 5 minutes after the power supply has been turned off. Otherwise, an electric shock, fire, or injury may result.

9. Static electricity may cause malfunction or break the controller. Do not touch the controller while power is supplied.
   When touching the controller for maintenance, take sufficient measures to eliminate static electricity.

10. Do not use the product in an area where dust, powder dust, water, chemicals, or oil is in the air. It will cause failure or malfunction.

11. Do not use the product in an area where a magnetic field is generated.
    It will cause failure or malfunction.

12. Do not install the product in an environment contain- ing flammable gas, explosive gas, or corrosive gas. It could lead to fire, explosion, or corrosion.

13. Radiant heat from strong heat sources, such as a fur- nace, direct sunlight, etc., should not be applied to the product.
    It will cause failure of the controller or its peripheral devices.

14. Do not use the product in an environment subject to a temperature cycle.
    It will cause failure of the controller or its peripheral devices.

15. Do not use the product in a place where surges are generated. When there are units that generate a large amount of surge around the product (e.g. solenoid type lifters, high-frequency in- duction furnaces, motors, etc.), this may cause deterioration or damage to the product’s internal circuit. Avoid sources of surge generation and crossed lines.

16. Do not install the product in an environment under the effect of vibrations and impacts. It will cause failure or malfunction.

17. When a surge-generating load, such as a relay or sole- noid valve, is driven directly, use a product that incor- porates a surge absorption element.

18. The power supplies should be separated between the controller power and the I/O signal power, and both power supplies must not be of the “inrush-current limited” type. If the power supply is of the “inrush-current limited” type, a voltage drop may occur during the acceleration or deceleration of the actuator.

Mounting

Warning

1. Install the controller and its peripheral devices on a fire-proof material. Direct installation on or near a flammable material may cause a fire.
2. Do not install the product in a place subject to vibra- tions and impacts. It will cause failure or malfunction.
3. Do not mount the controller and its peripheral devices together with a large-sized electromagnetic contactor or no-fuse breaker, which generate vibration, on the same panel. Mount them on different panels, or keep the controller and its peripheral devices away from such a vibration source.
4. Install the controller and its peripheral devices on a flat surface. If the mounting surface is distorted or uneven, an unacceptable force may be added to the housing, etc., causing problems
5. Take measures to ensure that the operating tempera- tures of the controller and its peripheral devices are within the range of the specifications. Also, the controller should be installed with spaces between its sides and the other structures or components.
   Failure to do so may cause the malfunction of the controller and its peripheral devices or a fire.

Power Supply

Caution

1. Use a power supply that has low noise between lines and between the power and ground. In cases where noise is high, an isolation transformer should be used.
2. To prevent lightning surges, appropriate measures should be taken. Ground the surge absorber
   for light- ning separately from the grounding of the controller and its peripheral devices.

Grounding

Warning

1. Be sure to carry out grounding in order to ensure the noise tolerance.
2. Dedicated grounding should be used. Grounding should be to a D-class ground. (Ground resistance of 100 or less)
3. Grounding should be performed near the controller and its peripheral devices to shorten the grounding distance.
4. In the unlikely event that a malfunction is caused by the ground, please disconnect it.

Wiring

Warning

1. 1. Do not apply any excessive force to cables, such as repeated bending, tensioning, or placing a heavy object on the cables. It may cause an electric shock, fire, or the breaking of a wire.
2. Connect wires and cables correctly. Incorrect wiring could break the controller or its peripheral devices depending on the seriousness.
3. Do not connect wires while power is being supplied. It may cause the controller to break or its peripheral devices could be damaged, causing a malfunction.
4. Do not carry the product by holding its cables. It may cause an injury or damage to the product.
5. Do not connect power or high-voltage cables in the same wiring path as the unit. The product can malfunction due to noise and surge voltage interference in the signal line from the power and high-voltage cables.Separate the wiring of the controller and its peripheral devices from that of the power and high-voltage cables.
6. Confirm wiring insulation.
   Insulation failure (interference with other circuits, poor insulation between terminals, etc.) could introduce excessive voltage or current to the controller or its peripheral devices and damage them.

Maintenance

Warning

1. Perform a maintenance and inspection periodically. Confirm wiring and screws are not loose.Loose screws or wires may cause unintentional malfunction.
2. Conduct an appropriate functional inspection after completing the maintenance and inspection. At times where the equipment or machinery does not operate properly, conduct an emergency stop of the system. Otherwise, an unexpected malfunction may occur and it will become impossible to ensure safety. Conduct a test of the emergency stop in order to confirm the safety of the equipment.
3. Do not disassemble, modify, or repair the controller and its peripheral devices.
4. Do not put anything conductive or flammable inside of the controller. It may cause a fire.
5. Do not conduct an insulation resistance test or with- stand voltage test on this product.
6. Ensure sufficient space for maintenance activities. Design the system allowing the required space for maintenance and inspection.

LEG series guide rod type / Common precautions

Design/selection

Warning

1. Do not apply a load in excess of the actuator specification. A product should be selected based on the maximum work load and allowable moment. If the product is used outside of the operating specification, eccentric load applied to the guide will become excessive and have adverse effects such as creating play in the guide, reduced accuracy and reduced product life.
2. Do not use the product in applications where excessive external force or impact force is applied to it. This can lead to premature failure of the product.
3. Do not use the product in applications where excessive external force or impact force is applied to it. Excessive external force or impact force will damage the product. When used as a stopper, select a stroke of 50 mm or less.
4. Do not exceed the speed limit of the actuator specification. Select a suitable actuator by the relationship between allowable workload and speed. Noise or reduction of accuracy may occur if the actuator is operated in excess of its specification and could lead to reduced accuracy and reduced product file.
5. Do not use the product in applications where excessive external force or impact force is applied in the axial direction of the actuator. When used as a stopper, the workspace cannot get over the stopper(Fig. A), the stopper cannot hit the workspace (Fig. B) This can lead to premature failure of the product.

Handling

Caution

INP output signal

1. Positioning operation When the product comes within the set range by step data [In positon], output signal will be turned on. Initial value: Set to [0.50] or higher.

2. Pushing operation
   When the effective force exceeds step data [Trigger LV], the INP output signal will turn on. Use the product within the specified range of [Pushing force] and [Trigger LV]. To ensure that the actuator pushes the workpiece with the set [Pushing force], it is recommended that the [Trigger LV] be set to the same value as the [Pushing force].

3. For pushing operation, be sure to use the product in the “Pushing operation” mode. Do not hit the stroke end unless the product returns to origin. This may lead to damage and malfunction. There is a risk of damage to the internal stopper due to collision with the stroke end.

4. Do not change the positioning force from initial setting. If the positioning force is changed, it may cause a decrease in performance.

5. The maximum speed of this actuator is affected by the stroke. Check the model selection section of the catalog

6. Do not apply load or impact or resistance in addition to the transferred during return to
   origin.

7. In pushing operation, set the product to a position of at least 2 mm away from a workpiece. (This position is referred to as a pushing start position) The following alarms may be generated and operation may become unstable.
   a. ”Posn failed” alarm is generated. The product cannot reach a pushing start position due to variation in the target position.
   b. ”Pushing ALM” alarm is generated. The product is pushed back from a pushing start position after starting to push.

8. Do not scratch or dent the sliding parts of the piston rod, by striking or attaching objects. The piston rod and guide rod are manufactured to precise tolerances, even a slight deformation may cause malfunction.

9. When an external guide is used, connect it in such a way that no impact or load is applied to it. Use a freely moving connector (such as a floating joint).

10. Do not operate by fixing the piston rod and moving the actuator body. The excessive load will be applied to the piston rod, leading to damage to the actuator and reduced the life of the product.

11. When rotational torque is applied to the end of the plate, use it within the allowable range. This may cause deformation of the guide rod and bushing, play in the guide or an increase in the sliding resistance.

1. When mounting the product, keep a 40 mm or longer diameter for bends in the cable.
2. When using auto switch, the following limits will be in effect. Please select the product while paying attention to this.

• Insert the auto switch from the front side with rod (plate) sticking out.
• In the case of the motor parallel mounting type, it is not possible to fix the auto switch in the part hidden by the motor cover.
• Please consult with SMC when using auto switch on the rod stick out side.

Mounting

Warning

1. Never place your hands or fingers between the plate and the body. Be very careful to prevent your hands or fingers from getting caught in the gap between the actuator body and the plate when air is applied.

Caution

1. When tightening the screws to install the workpiece or fixture, fix the plate so that it does not rotate, and tighten the screws properly within the specified torque range. This may cause abnormal responses of the auto switch, play in the internal guide or an increase in the sliding resistance.
2. When mounting the product and/or a workpiece, tigtten the mounting screws within the specified torque range. Tightening the screws with a higher torque than recommended may cause a malfunction, whilst tightening with a lower torque can cause the displacement of the mounting position or in extreme conditions the actuator could become detached from its mounting position.

Work fixed/ Plate tapped style

Model| Screw| Max.

tightening

torque [N•m]

| Max. thread depth [mm]
---|---|---|---
LEG 25| M8×1.25| 12.5| 12
LEG 32 /LEG 40| M10×1.5| 24| 16

Mounting / Upper mounting tapped style

Model| Screw| Max.

tightening

torque [N•m]

| Length L [mm]
---|---|---|---
LEG 25| M6×1.0| 5.2| 48
LEG 32| M8×1.25| 12.5| 64
LEG 40| M8×1.25| 12.5| 78

Mounting / Lower mounting tapped style

Model| Screw| Max.

tightening

torque [N•m]

| Max. thread depth [mm]
---|---|---|---
LEG 25| M8×1.25| 12.5| 20
LEG 32 /LEG 40| M10×1.5| 24| 20

• Keep the flatness of the mounting surface within the following ranges when mounting the actuator body and work piece.
• The insufficient flatness of the work piece or the surface onto which the actuator body is to be mounted can cause increased sliding resistance.

Precaution on maintenance

Warning

1. Turn off the power supply before maintenance and replacement of the product.
2. Put on protective goggles when applying grease.

[Maintenance frequency]

• Perform maintenance according to the table below. Contact SMC if any abnormality is found.

Whichever occurs first.

[Items for visual appearance check]

• Loose screws. Abnormal dirt.
• Check of flaws/faults and cable connections.
• Vibration, noise.

[Items for internal check]

1. Lubricant condition on moving parts.
2. Loose or mechanical play in fixed parts or fixing screws.

[Items for belt check]

• Check the belt regularly as shown in “maintenance frequency”.
• Stop operation immediately and contact SMC when the belt appears to be like photographs shown below.
• a. Tooth shape canvas is worn out
• Canvas fiber becomes fuzzy.
• Rubber is removed and the fiber becomes whitish.
• Lines of fibers become unclear.
• b. Peeling off or wearing of the side of the belt Belt corner becomes round and frayed thread sticks out.
• c. Belt partially cut
• Belt is partially cut. Foreign matter caught in teeth other than cut part causes flaw.
• d. Vertical line of belt teeth
• Flaw, which is made when the belt runs on the flange.
• e. Rubber back of the belt is softened and sticky.
• f. Crack on the back of the belt

Replacement of belt

1. After the Screw is removed, the “Pulley plate” is removed.
2. After the screw is removed、” End cover” and ”Grommet” are removed, and the “Motor cover” is lifted up.
3. The screw[A] that is the fixation of the “Motor” is loosened
4. The screw[B] that is the fixation of “Motor” is loosened (To extent in which the slide can be done), and “Belt” is removed.
5. After “Belt” is installed, the root of “Motor” is pulled in a string or a long banding band. With tensile force adjusted, tighten the screw[B] which fix the actuator to the motor. （See the table below）

Model| Belt Part number| Pull tension

（N）

---|---|---
LEG25| LE-D-15-1| 19
LEG32| LE-D-15-2| 30
LEG40| LE-D-15-3
Model| Screw type| Screw size| Tightening torque [Nm]
---|---|---|---
LEG25| Cross recessed binding head screw| M3x6| 0.63
LEG32| hexagon socket head cap screw|

M4x10

|

1.5

LEG40

1. Screw[A] is tighten to fix “Motor
   • hexagon socket head cap screw[A] M2.5×10 [Tightening torque 0.18Nm]
2. Return plate”, “End cover”, “Grommet” are installed.
   • Cross recessed binding head screw M3x6 [[Tightening torque 0.63Nm]
3. End cover”, “Grommet” are installed

head screw

| M3x80 (Without lock)

M3x120 (With lock)

| 0.36
LEG32| Cross-recessed round-head screw| M3x85 (Without lock) M3x125 (With lock)
LEG40| Cross-recessed round-head screw| M3x105 (Without lock) M3x150 (With lock)

Troubleshooting

• Alarms below are abstract of representative examples.
• For other alarms, see operation manual of controller

/ Initial stage

When power is supplied, alarm for “AbEnc Comm ALM”

/code: 1-106” is generated.

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