Speed Control; Allowable Kinetic Energy - SMC Networks JMDB 32 Series Operation Manual

2-5. Speed control

1) When the cylinder speed is adjusted, install SMC AS Series Speed controllers around
the air supply to adjust to the specified speed.
2) When speed controllers are used for adjusting speed, there are two cases, one is
regulating the supply air to the cylinder (meter-in control), and another is regulating
the exhaust air from the cylinder (meter-out control). In the former case, cylinder
operation will be unstable. Generally, the latter case is applied.
Caution
！
Piston speed should be controlled gradually from low speed to the specified

speed with a speed controller fully closed.

2-6. Allowable kinetic energy

Warning
！
Use the actuator with allowable kinetic energy (Fig. 3) or less.

Operation with a kinetic energy over the allowable value can break the product and cause
injury or damage to equipment. If excessive kinetic energy is expected, install an external
absorber to prevent impact to the body of the product. In this case, please verify the rigidity of
the equipment carefully.
Caution
！
When the product is equipped with a rubber bumper, note that there will be

a slight bounce at the stroke end.
Fig. 3 Allowable Kinetic Energy
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