Festo DNCKE S Serie Instrucciones De Utilizacion página 46

DNCKE−...−S / KEC−...−S
Vertical mounting position
Case 2: Test with additional weight force suspended:
• Calculate the required test pressure P
( F
* m
P
P +
A
A
Size
Test force F
P
Piston area A Extending direction
Tab. 9
Static functional test
Place the piston rod in the retracted end position.
Exhaust port (2 è Fig. 1).
The clamp is active.
Pressurise cylinder chamber of
the DNCKE in the advancing direction
with test pressure P (è Tab. 9) while
A
simultaneously exhausting the cylinder
chamber in the returning direction.
Apply the test force (test pressure) for 60 seconds. During this time, the piston must not move further.
Tab. 10
46
using the following equation:
A
g )
10
DNCKE
[N]
[sq. mm]
Dynamic brake test
Pressurise cylinder chamber of the DNCKE in
the advancing direction with test pressure P
while simultaneously exhausting the cylinder chamber in
the returning direction.
– The movement begins (danger of crushing).
– The max. permissible travel speed must not be ex­
ceeded.
Exhaust port (2 è Fig. 1).
– Braking begins.
– The cylinder stops.
Determine path from the exhaust start signal until
the cylinder is at rest.
– This path equals the overtravel.
P
A
Fig. 22
P = test pressure [bar]
A
F = test force [N]
P
m = effective load [kg]
g = acceleration due to gravity [9.81 m/s
A = piston surface area [sq. mm]
40 63
1300 3200
1257 3117
Festo – DNCKE−...−S / KEC−...−S – 1511b English
2
]
100
8000
7854
(è Tab. 9)
A