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Idiomas disponibles
Idiomas disponibles
1)
Out A/Out B
1) Depending on configuration
Fig. 8: DNCE−LAS with clamping unit and valve control on the SFC−LACI
6
Commissioning
Warning
Uncontrolled moving parts can cause injury to people in the vicinity of the
DNCE−LAS−C.
· Make sure that the electric cylinder with the DNCE−LAS clamping unit is
logically controlled in a correct manner. The clamping mechanism can be
damaged as a result of incorrect control. This can result in the piston rod
suddenly advancing or retracting.
· Make sure that, in the traversing area, no one can reach into the direction of
motion of the moving parts and that no foreign bodies can get in.
Note
The actuators will be considerably accelerated.
· Make sure that the DNCE−LAS is not moved when releasing the clamp.
The movement when the clamp is released generates forces that can destroy
the electric cylinder or can wear out the clamping unit.
Note
The actuators may perform sudden unexpected movements.
· Avoid exceeding the static holding force (seeTechnical specifications).
The clamping unit is not suitable for dynamic braking. The dynamic forces
must not exceed the static holding forces.
Note
The reference travel cannot be executed in the mechanical end position.
· Make sure that the piston rod is not moved into the mechanical end position.
Otherwise the DNCE−LAS cannot be referenced. To remedy this: unlock the
clamping unit (using the transport screw if necessary) and push the piston rod
into the middle stroke position.
· Make sure that the DNCE−LAS has reached the parking position during the
motion sequence before exhausting and clamping the clamping unit.
· Observe the commissioning instructions for the DNCE−LAS in the operating
instructions (è Commissioning DNCE−LAS).
· Make sure that the operating pressure on the clamping unit is as follows:
To release the piston rod
Min. 3 bar
Lower pressures will impair the release of
the clamp hold
Fig. 9
7
Operation
If there is a change in the work load mass:
· Compare the specified safe loads with your actual application
(è Technical specifications).
To clamp the piston rod
Max. 0.5 bar
Excessively long and narrow pipes between the valve
and the DNCE−LAS−C will slow down the clamping.
Checking the clamp hold:
· Check regularly or after a sudden power failure to make sure that clamping
takes place correctly without a working load as follows:
deactivate control of the DNCE−LAS
Vent the clamping unit
Try to move the piston rod by hand in the stroke direction.
The piston rod must not move any more than the amount of axial play
(è Technical specifications").
With all applications:
· Keep the piston rod from becoming dirty. Oil and grease residues on the piston
rod reduce the clamping capacity.
8
Disassembly and repairs
Disassembly:
Note
The actuators may perform sudden unexpected movements.
· Make sure that the electric cylinder is deactivated and the clamping unit
exhausted.
If necessary:
· Recommendation: Return the product to our repair service for overhaul. This
ensures that special attention will be paid to the necessary fine adjustments and
inspections. The clamping unit does not usually require maintenance.
9
Eliminating malfunctions
Malfunction
Possible cause
Piston rod moves in spite
p
Wear
of clamping unit being
f l
i
i b i
Permanent manual unlocking
exhausted
exhausted
Operating pressure at the
clamping unit too high
Mass too large
Piston rod is dirty
Incorrect actuation
Piston rod clamped even
Insufficient operating
though clamping unit is
pressure on the clamping
pressurized
unit
When the clamping unit
Controller deactivated
is pressurized, the piston
rod moves at high speed
rod moves at high speed
into the end position.
Malfunction in the DNCE−LAS
No reference travel
DNCE−LAS at mechanical end
possible
position when switched on
Fig. 10
10
Technical specifications
DNCE−...−LAS−...−C
Constructional design
Operating medium
Ambient temperature
Operating pressure
Loosening
Clamping
Maximum
Pneumatic connection
Ambient conditions
Closing time (releasing and clamping)
Max. static holding force of clamping unit [N]
Max. effective load (vertical operation)
Max. axial backlash with piston rod
clamped and without load
Materials (clamping unit)
Housing, cover
Piston
Spring
Clamping jaws
Seals
Fig. 11
Remedy
Send to Festo
Remove screw from connection 3
Reduce operating pressure
(è Technical specifications)
Reduce the mass
Clean the piston rod
Check actuation
Increase operating pressure
(è Technical specifications)
Always move to the end position in a
controlled manner
(è Commissioning)
Check the DNCE−LAS for malfunctions
(è DNCE−LAS operating instructions)
Deactivate controller and unlock
clamping unit (e.g. with transport
screw)
Push piston rod by hand into middle
stroke position
32
40
100 200 320 100 200 320 400
Spring−loaded clamping profile
Dried compressed air, lubricated or
unlubricated
[°C]
0 ... +60
[bar]
min. 3
[bar]
max. 0.5
[bar]
8
M5
GÁÁ
Piston rod must be free of oil and grease
[s]
0.02
600
1000
[kg]
1.5
1.5
1
1,5
[mm]
0.5
Anodised aluminium
Polyacetate
Spring steel
Brass
Nitrile rubber, polyurethane
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