Festo DFPD-Series, Инструкция по эксплуатации

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7.2 Assembly with adapter bridge
1 Semi-rotary drive
2 Adapter bridge
3 Coupling
4 Process valve
Fig. 5 Assembly with adapter bridge
1. Have adapter bridge and coupling ready è www.festo.com/catalogue.
2. Mount the adapter bridge 2 on the semi-rotary drive.
– Align studs of the adapter bridge lengthwise to the drive.
– Align open side of the adapter bridge with the process valve.
– Do not jam the centring ring in the drilled hole for the adapter bridge.
– Screw in the screws but do not tighten them yet.
3. Prepare process valve.
Adjust the control shaft of the process valve to implement the desired operat-
ing method for opening and closing.
4. Insert the coupling 3 . The square of the coupling must sit in the coupling of
the semi-rotary drive without tilting ( è Fig.1, 8 ).
5. Place the semi-rotary drive with adapter bridge and coupling on the control
shaft of the process valve. The square of the process valve must sit in the
coupling without tilting.
6. Mount the adapter bridge on the connecting flange of the process valve using
4 corrosion-resistant screws, retaining rings and nuts (material: VA).
7. Tighten the screws at both the drive and process valve crosswise
è Tab. 12 Tightening torques for flange.
7.3 Pneumatic port
Single-acting semi-rotary drive
1. Prevent corrosive atmosphere in the spring space. If there is a corrosive atmo-
sphere, use a rebreather block.
2. Mount a filter element on the exhaust port 4 (A) to prevent ingress of dirt.
Type Supply port Effect
DFPD-RS-... 2 Air supply; always connected
DFPD-LS-... 4 Pressurisation of spring space
Tab. 5 Supply port for single-acting semi-rotary drive
Double-acting semi-rotary drive
Type Supply port Effect
1)
2 Air supply direction of rotation anti-clockwise DFPD-RD-...
4 Air supply direction of rotation clockwise
2 Air supply direction of rotation clockwise DFPD-LD-...
4 Air supply direction of rotation anti-clockwise
1) viewed from the connection point of the accessories
Tab. 6 Supply port for double-acting semi-rotary drive
8 Commissioning
Requirements
– The drive is fully mounted and connected.
Commissioning the drive
1. Pressurise drive slowly.
2. Check correct function at low travel speed.
– Direction of rotation of drive
– Position of process valve
9 Maintenance
9.1 General
– Low Demand Mode:
When used as intended, the product is maintenance-free.
– High Demand Mode DFPD-...-T4
Grease the product again after 20,000 switching cycles.
– High Demand Mode DFPD-...-T6
For safety-oriented applications, replace consumable parts after max. 20,000
switching cycles.
9.2 Proof test (Proof Test)
The proof test consists of a Full Stroke test of the drive. Here, the complete rota-
tion of the shaft is checked at the connection to the process valve dependent on
the switching position of the control valve. The switching position of the shaft can
be determined visually (position of the shaft groove), using a position sensor or
using another suitable auxiliary means.
• Perform the proof test at least once in every 3 years.
During the proof test, the safety of the application must be ensured.
1. Trigger rotation of the shaft at the control valve.
2. Measure the time until the semi-rotary drive has performed a complete rota-
tion of the shaft.
Ä
The test is successful if the semi-rotary drive completes the movement
within the switching time intended for control by the control valve.
3. Check the drive externally (visual inspection).
Ä The test is successful if no defect, leakage, or contamination is detected.
4. Document test results.
10 Malfunctions
NOTICE!
Repairs to the product are not permissible. In the event of malfunctions or failure:
Replace the product and let Festo know about the failure. Return defective
products to Festo.
Fault description Cause Remedy
Drive does not move in the
desired direction Compressed air connections
connected incorrectly Correct the tubing connection
Tab. 7 Malfunctions
11 Modification
11.1 Replacing the spring package
1 Screws
2 Washers
3 Toothed discs
4 Cover
5 Seal
6 Springs
7 End-position screws
Fig. 6 Replacing the spring package
WARNING!
Risk of injury from flying objects.
A faulty spring package can result in the cover being ejected during disassembly
and causing injury.
•
If the cover is still under spring force when the gap width is reached, do not
proceed with the disassembly.
• Replace the actuator.
Requirements
– Mounting position is vertical. Drive is secured to prevent tilting.
– Drive is removed è 12 Dismounting.
1. Unscrew end position screws.
Ä
Drive is in neutral position.
2. Loosen screws crosswise until the gap width is reached.
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– Cover is no longer under spring force.
– Gap width between cover and drive: ≤ 6 mm
3. Unscrew screws completely.
4. Remove cover.
Ä Spring package can now be replaced.
5. Remove springs.
6. Insert new springs in the desired configuration.
7. Mount cover. Observe correct position of the seal.
8. Insert the screws and tighten them crosswise .
11.2 Configuring the spring package
The configuration of the spring package is different depending on the nominal
operating pressure.