Intermediate Stop - SMC Networks CY3R Series Operation Manual

４．Intermediate Stop
4-1) Consider the following point to stop the
load on the way of stroke by external
stopper etc.
a) Operating pressure
Keep operating pressure below the limit
shown on Table 4. The operation at higher
pressure may cause thrust over holding
force to act and separate piston slider
and external slider from each other.
4-2) Consider the following points to realize
intermediate stop in pneumatic circuit.
a) Intermediate stop realized by the rodless
cylinder is not high accurate. If higher
accuracy is required for intermediate stop,
air hydraulic spec. (-X116) which combines
the cylinder with air hydraulic unit is
recommended.
(If it is required, contact SMC Sales division.)
b) Pay attention to kinetic energy generated by
load.
If the kinetic energy generated by the load
exceeds one to enable intermediate stop
shown on Table 5, be concerned about
possible runaway of load due to intermediate
stop by closed center valve.
Table 4 Operating pressure
limit for intermediate stop
Cylinder
tube I.D.
Model
(mm)
φ6
CY3R6
φ10
CY3R10
φ15
CY3R15
φ20
CY3R20
φ25
CY3R25
φ32
CY3R32
φ40
CY3R40
φ50
CY3R50
φ63
CY3R63
Table 5 Kinetic energy allowable
for intermediate stop (reference)
Cylinder
tube I.D. Model
(mm)
φ6
CY3R6
φ10
CY3R10
φ15
CY3R15
φ20
CY3R20
φ25
CY3R25
φ32
CY3R32
φ40
CY3R40
φ50
CY3R50
φ63
CY3R63
12
A
Operating
pressure limit
(MPa)
0.55
0.55
0.65
0.65
0.65
0.65
0.65
0.65
0.65
A
Kinetic energy
(J)
0.007
0.03
0.13
0.24
0.45
0.88
1.53
3.12
5.07