Attachment Finger Clearance Clearance Impact load Aligned Not aligned Impact load Mounting 9. Adjust the gripping point so that an excessive force will not be applied to the fingers when inserting a workpiece. In particular, during a trial run, operate the product manually or at a low speed and check that the safety is assured without impact. 3) When turning over Impact load Clearance Handling Series LEH Electric Grippers/ Specific Product Precautions 3 Be sure to read before handling. Refer to page 469 for Safety Instructions and the Operation Manual for Electric Actuator Precautions. Please download it via our website, http://www.smcworld.com Warning 3. When mounting the electric gripper, tighten the mounting screws within the specified torque range. Tightening the screws with a higher torque than recommended may cause malfunction, whilst the 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. 4. When fixing the attachment to the finger, avoid applying excessive torque to the finger. Play or deteriorated accuracy can result. 5. The mounting face has holes and slots for positioning. Use them for accurate positioning of the electric gripper if required. 6. When a workpiece is to be removed when it is not energized, open or close the finger manually or remove the attachment beforehand. When it is necessary to operate the product by the manual override screws, check the position of the manual override screws of the product, and leave necessary space. Do not apply excessive torque to the manual override screws. This may lead to damage and malfunction. 7. When gripping a workpiece, keep a gap in the horizontal direction to prevent the load from concentrating on one finger, to allow for workpiece misalignment. For the same purpose, when moving a workpiece for alignment by the product, minimize the friction resistance created by the movement of the workpiece. The finger can be displaced, play or breakage. 8. Perform adjustment and confirmation to ensure there is no external force applied to the finger. If the finger is subject to repetitive lateral load or impact load, it can cause play or breakage and the lead screw can get stuck, which results in operation failure. Allow a clearance to prevent the workpiece or the attachment from hitting gripper product at the end of the stroke. 1) Stroke end when fingers are open With clearance Without clearance With clearance Without clearance 2) Stroke end when gripper is moving Clearance Clearance Impact load Caution 1. The parameters of the stroke and the opening/closing speed are for both fingers. The stroke and the opening/closing speed for one finger is half a set parameter. 2. When gripping a workpiece by the product, be sure to set to the pushing operation. Also, do not hit the workpiece to the finger and attachment in positioning operation or in the range of positioning operation. Otherwise, the lead screw can get caught and cause operation failure. However, if the workpiece cannot be gripped in pushing operation (such as a plastically deformed workpiece, rubber component, etc.), you can grip it in positioning operation with consideration to the elastic force of the workpiece. In this case, keep the driving speed for impact specified in item 3 on page 375. When the operation is interrupted by a stop or temporary stop, and a pushing operation instruction is output just after operation is restarted, the operating direction will vary depending on the start position. 374