SMC Networks CRQ2 Series, Руководство по эксплуатации

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6-4 Internal structure and operation principle
In figure 14, the switch A is turned on. When pressurized from port A, piston B moves to the left and piston A
moves to the right, and the shaft rotates clockwise. At this point, magnet goes out of switch A
’s operation
range to turn off switch A. Then, piston A moves right , and the magnet goes into switch B
’s operation range
to turn on switch B.
7
．
Cushions
a) Rotary actuator is not adjusted so that the cushions work during shipment. Adjust the cushion valve
attached to the cover depending on rotation time and load inertia moment.
（
See Fig 15
）
b)Rotating the cushion valve reduces the orifice diameter and increases cushion effect.
Counterclockwise increase orifice diameter and reduces cushion effect.
c) Tighten the cushion valve lock nut properly. Loose lock nut lead to cause the cushion valve to rotate
and initially set cushion value changes. Re-adjustment is necessary in this case.
ｄ
) Cushion packing wears out during long period of operation, and cushion effect becomes weaker.
Re-adjustment is necessary.
e)
Don’t operate the actuator with the cushion valve orifice completely closed. The piston may bumps
into the stroke end, not fully travel the stroke, or the pressure exceeds the proof pressure of the
cushion packing.
ｆ
) Don’t start the actuator with the cushion valve orifice completely open.
Since this means an actuator without a cushion, the impact is big. If the actuator operate with allowable
energy in table 2 with this condition, the rotary actuator may be broken.
Open the cushion valve and the speed controller gradually fromclosed condition.
-30-
Fig.14
Lock nut
Cushion valve
Fig.15
Switch A
Most sensitive position
Operating range
Piston A
Magnet
Piston B
Port A
Switch A
Most sensitive position
Operating range
Magnet
2020-10-13 10:36
DI987004