Festo DFST-32 G2 Series, Operating Instructions, Page: 3 / 4

A Connection on flange B Connection from below
Fig. 10 Alternative pneumatic ports
• Select one of the two actuation types (single-acting/double-acting):
2 Retracting connection 1 Extending connection
Fig. 11 Double-acting actuation
2 Retracting connection S Silencer
Fig. 12 Single-acting actuation
1. When used as a single-acting cylinder: screw a silencer into the supply port
on the bottom ( è www.festo.com/catalogue).
2. Connect hoses to supply ports.
If necessary, convert and seal threaded pins in the alternative connections.
8 Commissioning
WARNING!
Risk of injury due to unexpected movement of components.
• Protect the positioning range from unwanted intervention.
• Keep foreign objects out of the positioning range.
1. Pressurise the system slowly.
2. Start test run:
Double-acting insert Single-acting insert Reaction
Pressurise 1 supply port. Exhaust 2 supply port. The piston rod extends.
Start stopper cylinder with transported material. The moving transported
material is stopped and
presses the toggle lever to the
rear end position (with the
DFST-...-L variant this locks
the toggle lever).
Pressurise 2 supply port and
exhaust supply 1 port.
Pressurise 2 supply port. The piston rod retracts. The
lever deactivating mechanism
is released. The transported
materials is moved on.
Pressurise 1 supply port and
exhaust supply 2 port.
Exhaust 2 supply port. Piston rod extends. The stop-
per cylinder can stop the next
batch of transported material.
Tab. 3 Commissioning Steps
3. Finish test run after completing all settings.
Automatic Unlocking of the Lever Locking Mechanism with DFST-...-L (Accessor-
ies)
Fig. 13
• Pressurise 2 supply port.
Ä When the piston rod is retracted, it presses the lever locking mechanism
on the screw and releases the toggle lever.
Cushioning Setting
Fig. 14 Adjust shock absorber
1. Loosen the detent for the knurled nut 5 .
2. Turn knurled nut until the desired cushioning is reached.
Ä When the setting is correct, the transported material presses the toggle
lever quickly and stops. The cushioning is too hard if the transported
material springs back immediately or requires a long time to press the
toggle lever down completely. The cushioning is too soft if the toggle
lever hits the end position hard without any visible damping.
The setting range has an upper and a lower stop:
–
Turn knurled nut aJ anticlockwise in the "+" direction: cushioning
becomes harder
– Turn knurled nut aJ clockwise in the "-" direction: cushioning
becomes softer
3. Tighten the detent for the knurled nut 5 . Tightening torque: 1.5 Nm
9 Maintenance
9.1 Cleaning
Clean the outside of the product with a soft cloth. Do not use aggressive cleaning
agents.