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DNCE−...−LAS−...−C
(en) Operating instructions
Original: de
Note
Fitting and commissioning is to be carried out only by qualified personnel in
accordance with the operating instructions.
1
Operating elements and ports
1
Electric cylinder
2
Clamping unit
Fig. 1
Definition
DNCE−LAS
Electric cylinder
DNCE−LAS−C
Electric cylinder with clamping unit
2
Function and application
The electric cylinder with
DNCE−...−LAS−...−C clamping unit holds
the piston rod with frictional locking in
an intermediate or end position of the
electric cylinder. When the supply port
3 is exhausted, a spring pushes the
clamping jaws apart. When the
clamping jaws are pushed apart, they
are tilted onto the piston rod. This
frictional locking holds the piston rod.
When the supply port 3 is pressurized,
a piston pushes the clamping jaws
together. The holes in the clamping
jaws are now aligned with the piston
rod. The piston rod can now move
freely.
Festo AG & Co. KG
Postfach
D−73726 Esslingen
++49/711/347−0
www.festo.com
745 758
0906a
3
Compressed air connection
(released by transport screw)
Fig. 2: Piston rod clamped
Fig. 3: Piston rod released
The electric cylinder with DNCE− LAS−, −C clamping unit attached is intended to hold
the piston rod of a DNCE−LAS electric cylinder (e. g. when installed vertically).
The piston rod must not be clamped when moving (= braking).
In the event of sudden pressure failure, the DNCE−LAS−C may only be used if
followed by a functional test (è Operation).
3
Conditions for the safe use of the product
Note
The clamping unit may be damaged if the piston rod is braked.
· Make sure that with cyclic clamping the following specifications are observed:
The clamping unit is pressurized and exhausted only when the clamping rod
has come to a complete standstill.
There are no dynamic forces present.
Note
Incorrect handling can lead to malfunctioning.
· The DNCE−LAS operating instructions must be observed at all times.
The technical specifications of the electric cylinder with DNCE−LAS−C clamping
unit may restrict the details in the operating instructions of the DNCE−LAS
electric cylinder.
· Slowly pressurize the complete system. This will prevent uncontrolled
movements from occurring.
For slow start−up pressurisation use soft−start valve type HEL.
· Use the product without any unauthorized modifications.
· Note the warnings and instructions on the product and in the relevant operating
instructions.
4
Mechanical assembly
1
To unlock temporarily by hand:
· Using a round bar 4
(e.g. Ø 4 x 50 mm), press the piston
against the spring force until the
piston rod can be moved freely.
2
3
For permanent unlocking when setting:
· Screw an M5 screw 5 into the
threaded hole on the compressed air
port until the piston rod can be
moved freely. Max. permissible
torque is 0.5 Nm.
DNCE−...−LAS−...−C
Compressed air port/screw size
Min. screw length
Fig. 6
5
Installing the pneumatic system
· Connect the compressed air supply 3
The tightening torque is 0.5 Nm.
A control example is given below.
Fig. 4: Releasing the clamp (briefly)
Fig. 5: Releasing the clamp
(permanently)
32
40
M5
GÁ
[mm]
16
22
Fig. 7
4
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