Festo DFPI Series, Instructions

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7 Installation
7.1 Pneumatic Installation
Consider whether an emergency pneumatic supply and check valves are required
to prevent sudden compensating movements of the piston rod and a sudden drop
of the movable mass in a vertical or inclined mounting position if the pressure
drops.
DFPI-...-ND2P-C1V-A
1. If applicable, remove the adhesive labels from the supply ports.
2. Select suitable fittings (connection G
¼ ).
3. Mount fittings on ports P and R è Fig.4.
4. Attach tubing to ports P and R.
DFPI-...-ND2P-C1V-PA (protected pneumatic connections)
Use pre­assembled connecting cable with protective conduit or externally calib­
rated pneumatic connecting cables
è www.festo.com/catalogue.
Outside diameter – port P: 8 mm; port R: 10 mm.
The flange type socket has two threaded holes
è
Fig.7.
Push­in fittings are pre­assembled at the factory (included in the scope of deliv­
ery).
1. If necessary, loosen the cable connector
è Assembly instructions for
accessories.
2. If necessary, remove the blanking plugs from the push­in fittings.
3. Decide whether exhaust should be local (directly at the DFPI) or guided.
1 Pneumatic port R (exhaust)
2 Port for local exhaust with plug
screw (ex­works) or filter nipple
or silencer (optional)
3 Passage for electrical cables
4 Pneumatic connection P
(compressed air supply)
Fig. 7
With guided exhaust:
The plug screw (
è
Fig.7) is already mounted and the DFPI is thus prepared for
guided exhaust.
1. If the blanking screw has been removed, close the port for local exhaust again
with the sealing ring and plug screw.
Tightening torque 13.5 Nm.
2. Attach tubing to ports P and R.
For local exhaust (directly at the DFPI):
1. Close the unused port R (
è
Fig.4) with a blanking plug (accessory).
2. Remove the plug screw è Fig.4.
3. Screw the filter nipple G ¼ (for exhaust without silencer) or silencer G ¼
(accessory) into the port for local exhaust ( è Fig.4).
Tightening torque 4 Nm ± 10%.
4. Connect tubing to port P
è
Fig.4
In both cases:
• In the unpressurised state, check that the tube connection is secure by
pulling gently on the tube.
When using the connecting cable available as an accessory:
–
Mount cable fitting and protective conduit è Assembly instructions.
Loosen tubing
1. Press and hold the push­in fitting.
2. Carefully pull the tube out of the push­in fitting.
Before using the tubing again, cut off the damaged part.
7.2 Electrical Installation
WARNING!
Risk of injury due to electric shock.
• For the electrical power supply with extra­low voltages, use only PELV circuits
that guarantee a reinforced isolation from the mains network.
• Observe IEC 60204­1/EN 60204­1.
NOTICE!
Damage to the electronics and malfunctions due to installation errors.
• The maximum permissible signal line length is 15 m.
• Connect the earth terminal to the earth potential with low impedance (short
cable with large cross­section). Tightening torque 5 Nm ± 10%.
• Make sure that the electrical connecting cable is sufficiently sized.
Recommended for the DFPI­...­ND2P­C1V­PA:
•
Use the pre­assembled connecting cable NHSB with protective conduit
è www.festo.com/catalogue.
The electrical connection is covered by the flange type socket. The flange type
socket must be removed for the electrical installation.
DFPI-...-ND2P-C1V-A
1 Retaining screws; tightening
torque 1.4 Nm ± 10%
2 Seal
3 Cable connector; seal; tightening
torque1.5 Nm±10%
4 Cable connector strain relief;
tightening torque 0.3 Nm±10%
5 Cable connector; tightening
torque 3.5 Nm ± 10%
Fig. 8
DFPI-...-ND2P-C1V-PA (protected pneumatic connections)
1 Retaining screws; tightening
torque 1.4 Nm ± 10%
2 Port for local exhaust with plug
screw (ex­works)
3 Seals (O­rings)
4 Mounting thread (M32 x 1.5) for
connecting cable (accessories);
tightening torque 7 Nm ± 10%
Fig. 9
1. Select appropriate electrical connecting cable.
DFPI-...-ND2P-... -C1V-A -C1V-P-A
Number of cores 3 (minimum) 2 (minimum)
Outside diameter [mm] 4.5 … 10 6.5 … 8
Conductor cross section [mm " ] 0.75 … 1.5
Tab. 1
2. Loosen the retaining screws of the flange type socket (
è
Fig.8 or
è
Fig.9)
and carefully remove it.
3. DFPI­...­ND2P­C1V­A: loosen cable fitting if necessary
è
Fig.8.
DFPI­...­ND2P­C1V­PA: è assembly instructions for connecting cable
(accessories).
4. Guide the electrical cable through the flange type socket.
5. If necessary, loosen the two screws securing the socket strip of the electrical
connection.
6. Connect the connecting cable to the socket strip with suitable wire end
sleeves è Tab. 2. Tightening torque 0.22 … 0.25 Nm.
The integrated positioner is supplied with operating voltage and the setpoint
signal via the 5­pin plug.
Pin Allocation Socket strip
1 Power supply 24 V DC
2 Analogue setpoint input 4 … 20 mA
1)
3 Power supply 0 V DC
4 Output analogue actual value 4 … 20 mA
1)
5 Input initialisation 24 V DC
1) The relationship between position and analogue value depends on the initialisation.
Tab. 2
7. Carefully plug the connected socket strip into the plug.
8. Fasten the socket connector with the two screws.
Tightening torque 0.5 Nm ± 10%.
9. Mount flange type socket. Make sure that the seals are seated correctly.
Tightening torque è Fig.8 or è Fig.9.
10. With the DFPI­...­ND2P­C1V­A: retighten the cable connector. Tightening
torques è Fig.8.
With the DFPI­...­ND2P­C1V­PA complete the pneumatic installation before
tightening the cable connector (accessories)
è
7.1 Pneumatic Installation.